VIGILLINK G802 Dual Channel Edge Blender User Guide

VIGILLINK G802 Dual Channel Edge Blender

G802 Dual Channel Edge Blender

Product Information

• Document: G802-3
• New generation Warp & Edge blending Full functions in one box
• No PC required
• Max. Input: 40962160 @60Hz 4:4:4, 76801200 @30Hz
• Max. Output: 2048*1080 @60Hz 4:4:4
• Sales & Technical support:
  • Web site: www.geoboxav.com
  • E-mail: [email protected]
  • Version: VL-V1.01
  • Tel: +949-502-4484

Product Usage Instructions

Content in the packing box:
Ensure that the following items are included in the packing box:

• [List of items]

Basic operation & settings

Connecting the inputs:
To connect the inputs, follow these steps:

1. [Step 1]
2. [Step 2]
3. [Step 3]

Connecting the outputs:
To connect the outputs, follow these steps:

1. [Step 1]
2. [Step 2]
3. [Step 3]

System connection:
To establish the system connection, follow these steps:

1. [Step 1]
2. [Step 2]
3. [Step 3]

Input/Output selection & LED indicators:

For input/output selection and understanding LED indicators, refer to the following sub-sections:

Input source selection:
To select the input source, follow these steps:

1. [Step 1]
2. [Step 2]
3. [Step 3]

Output resolution selection:
To select the output resolution, follow these steps:

1. [Step 1]
2. [Step 2]
3. [Step 3]

LED indicators:
To understand the LED indicators, refer to the user manual for detailed information.

Signal Connection and Power On:

To connect the signal and power on the device, follow these steps:

1. [Step 1]
2. [Step 2]
3. [Step 3]

HDMI Loop Out for daisy chain connection:
To create a daisy chain connection using the HDMI loop out, follow these steps:

1. [Step 1]
2. [Step 2]
3. [Step 3]

System Settings: Box ID, RS232, Ethernet:
To configure the system settings including Box ID, RS232, and Ethernet, follow these steps:

1. [Step 1]
2. [Step 2]
3. [Step 3]

How to use IR Remote Controller:
To use the IR remote controller, follow these steps:

1. [Step 1]
2. [Step 2]
3. [Step 3]

OSD Lock and unlock in multi-unit application:
To lock or unlock the OSD in a multi-unit application, follow these steps:

1. [Step 1]
2. [Step 2]
3. [Step 3]

Full screen and native aspect ratio:
To adjust the display to full screen or native aspect ratio, follow these steps:

1. [Step 1]
2. [Step 2]
3. [Step 3]

Image rotation and flip:
To rotate or flip the image, follow these steps:

1. [Step 1]
2. [Step 2]
3. [Step 3]

G802 User Guide

Document: G802-3

G802 Dual Channel Edge Blender User Guide
New generation Warp & Edge blending Full functions in one box No PC required
Max. Input: 40962160 @60Hz 4:4:4, 76801200 @30Hz Max. Output: 2048*1080 @60Hz 4:4:4

Sales & Technical support
Web site: www.geoboxav.com E-mail: [email protected] Version: VL-V1.01
Tel: +949-502-4484
0

G802 User Guide

Document: G802-3

Table of Contents

Disclaimer/Copyright Statement…………………………………………………………………………………………….

3

Warranty/RMA…………………………………………………………………………………………………

3

FCC/CE Statement………………………………………………………………………………………………………………

3

Introduction…………………………………………………………………………………………………………….

4

Functions and Features………………………………………………………………………………………………………..

5

1. Content in the packing box ……………………………………………………………………………………………………..8

2. Basic operation & settings

2.1. Connecting the inputs………………………………………………………………………………………………………………. 8

2.2. Connection the outputs…………………………………………………………………………….

8

2.3. System connection ………………………………………………………………………………………………………………….. 9

2.4. Input/Output selection & LED indicators …………………………………………………………………………… 10

2.4.1. Input source selection………………………………………………………………………. 11

2.4.2. Output resolution selection…………………………………………………………………………………………….. 11

2.4.3. LED indicators………………………………………………………………………………………………………………… 12

2.5. Signal Connection and Power On…………………………………………………………………………………………….. 12

2.6. HDMI Loop Out for daisy chain connection………………………………………………………………………………. 13

2.7. System Settings: Box ID, RS232, Ethernet……………………………………………………………………….. 13

2.8. How to use IR Remote Controller. …………………………………………………………………………………… 15

2.9. OSD Lock and unlock in multi-unit application…………………………………………………………………… 16

2.10. Full screen and native aspect ratio……………………………………………………………………………………….. 17

2.11. Image rotation and flip………………………………………………………………………………………………………….. 17

2.12. System Power on sequence………………………………………………………………………………………………… 17

2.13. Color adjustment… ………………………………………………………………………………………………………………. 18

2.14. System synchronization ……………………………………………………………………………………………………….. 19

2.15. System Reset…………………………………………………………………………………….

20

2.16. System image aspect ratio adjustment… ……………………………………………………………………………… 20

3. Preparation for edge blending

3.1. Determine source signal resolution………………………………………………………………. 22

3.2. Determine overlap region size and pixels……………………………………………………….

22

3.3. Relation between Overlap pixels and geometry alignment accuracy ………………………………………… 23

3.4. Get installation data from GEOBOX Excel Spread Sheet… ……………………………………………………… 25

3.5. Apply Spread Sheet data for projector installation and GeoBox setting……………………………………. 26

3.6. Projector settings before edge blending …………………………………………………………………………………… 27

3.7. GeoBox settings before edge blending …………………………………………………………………………………….. 28

4. Geometry Alignment

4.1. Select the right Grid Pattern for geometry alignment… …………………………………………………………….. 28

4.2. Grid pattern pixel size selection ……………………………………………………………………………………………….. 29

4.3. Geometry alignment ………………………………………………………………………………………………………………… 30

4.3.1. Geometry alignment through remote controller… ……………………………………………………………. 31

4.3.2. Activate grid pattern… ……………………………………………………………………………………………………. 31

4.3.3. [2×2] 4 corner geometry alignment………………………………………………………………………………….. 32

4.3.4. [3×3], [5×3], [9×5] warp alignment…………………………………………………………. 32

4.3.5. Linearity grid line adjustment… ………………………………………………………………………………………. 34

4.3.6. Corner [Wall] geometry adjustment……………………………………………………….

35

4.4. Geometry alignment via Gwarp3 PC Tool ………………………………………………………………………………. 37

5. [Video Wall] Settings ……………………………………………………………………………………………………………………….. 39

1

G802 User Guide

Document: G802-3

5.1. [Zoom]: split the signal source…………………………………………………………………….

39

5.2. [Pan]: assign image location………………………………………………………………………

40

5.3. [Overlap]: crop the right image for each projector………………………………………………

40

5.4. [Position]: shift image position without changing image size………………………………….

41

6. [Edge Blend] settings…………………………………………………………………………………….

42

6.1. [Edge] selection location and set edge blending value………………………………………… 43

6.2. [Shift]: shift image position and execute Edge Mask…………………………………………………………………. 43

6.3. [Gamma]: color correction in edge blending area………………………………………………. 44

6.4. Black level uplift: [Offset] & [Corner] adjustment… …………………………………………………………………… 46

6.5. [Color]: Individual projector white balance and color correction……………………………….

50

6.6. Edge [Mask]……………………………………………………………………………………………………………………………. 50

6.7. [Grid] (determine grid patter size) …………………………………………………………………………………………….. 52

6.8. Final image quality fine-tuning ………………………………………………………………………………………… 52

7. Example for 3 projector edge blending procedures…………………………………………………..

54

7.1. Get detailed edge blending information through GEOBOX Excel Spread Sheet…………………. 54

7.2. Mark image location and install the projectors………………………………………………….

55

7.3. System connection ………………………………………………………………………………………………………………….. 55

7.4. Projector settings …………………………………………………………………………………………………………………….. 56

7.5. GeoBox settings…………………………………………………………………………………….

56

7.6. Geometry alignment……………………………………………………………………………….

57

7.7. Video wall settings………………………………………………………………………………….

59

7.8. Edge blending setting………………………………………………………………………………

60

7.9. Final image quality fine-tuning…………………………………………………………………….

61

8. Save/Load system settings……………………………………………………………………………………………………. 62

9. Multiple unit applications

9.1. System connection in multiple unit edge blending……………………………………………… 63

9.2. Content overlap setting issue …………………………………………………………………….

65

9.3. Convenient setting in multiple unit application………………………………………………….

66

9.3.1.Setup by remote controller… ……………………………………………………………………………………………. 66

9.3.2.Setup by Ethernet…………………………………………………………………………….

66

10. WebGui and Gwarp3 PC tool…………………………………………………………………………………………………………… 67

10.1. WebGui ……………………………………………………………………………………………………………………………….. 67

10.2. Gwarp3 PC Tool…………………………………………………………………………………………………………………… 68

11. Advanced applications and settings……………………………………………………………………

70

11.1. Passive 3D application………………………………………………………………………….

70

11.2. Active 3D application……………………………………………………………………………. 72

11.3. Multiple Wall Immersive display………………………………………………………………..

72

11.4. Portrait edge blending ………………………………………………………………………………………………………….. 75

11.5. Flexible display…………………………………………………………………………………………………………………….. 76

11.6. Discrete content displayed in each projector…………………………………………………………………………. 77

12. Miscellaneous settings

12.1. Helpful tips for edge blending………………………………………………………………….

78

12.2. Image distortion………………………………………………………………………………….

78

12.3. EDID settings…………………………………………………………………………………….

79

12.4. HDMI vs. DVI output signal…………………………………………………………………….

80

12.5. System standby and automatically turn off output signal……………………………………

81

12.6. Change background color………………………………………………………………………

81

12.7. Turn off Splash screen Logo……………………………………………………………………

81

12.8. Limitation in image flip and rotation……………………………………………………………

82

2

G802 User Guide

Document: G802-3

13. Trouble shooting

13.1. Front panel LED indicators …………………………………………………………………………………………………… 82

13.2. No image in the projector……………………………………………………………………….

82

13.3. Intermittent or loss of input signal …………………………………………………………………………………………. 82

13.4. Video quality issues ……………………………………………………………………………………………………………… 83

13.5. Image position shift after installation …………………………………………………………………………………….. 84

13.6. System crash and malfunction …………………………………………………………………………………….. 84

13.7. Synchronization issue in the outputs …………………………………………………………………………………….. 85

13.8. How to reduce projector re-searching input signal ………………………………………………………………… 85

14. Technical support… ………………………………………………………………………………………………………………………… 85

15. Safety precaution and maintenance ……………………………………………………………………………………….. 86

Specification ………………………………………………………………………………………………………………………………………….. 87

Revision History …………………………………………………………………………………………………………………………………….. 89

Disclaimer/Copyright Statement Copyright 2018, VigilLink LLC. All Right Reserved This information contained in this document is protected by copyright. All rights are reserved by VigilLink LLC. VigilLink LLC. reserves the right to modify this document without any obligation to notify any person or entity of such revision. Copying, duplicating, selling, or otherwise distributing any part of this document without signing a non-disclosure agreement with an authorized representative of VigilLink LLC. is prohibited. VigilLink LLC. makes no warranty for the use of its products and bears no responsibility for any error of omission that may appear in this document. Product names mentioned herein are used for identification purposes only and may be trademarks of their respective companies.
Limited Warranty and RMA statement
This device is designed and tested to the highest standards and backed by thirty months’ parts and labor warranty. Warranties are effective upon the first delivery date to the end customer and are non-transferable. Warranty related repairs include parts and labor, but do not include repair of faults resulting from user negligence, special modifications, abuse (mechanical damage), shipping damage, and/or other unusual damages. The customer shall pay shipping charges when the unit is returned for repair. Manufacturer will pay shipping charges for return shipments to customers.
Manufacturer does not assume responsibility for consequential damages, expenses or loss of revenue, inconvenience or interruption in operation experienced by the customer. Warranty service shall not automatically extend the warranty period.
User can pay extension fee to extend the warranty period. Please contact us for more details. In the event that a product needs to be returned for repair, inform manufacturer and ask for a Return Material Authorization number.
FCC/CE statement Note: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of FCC Rules. These
limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instruction, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
· Reorient or relocate the receiving antenna.
· Increase the separation between the equipment and receiver.
· Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
· Consult the dealer or an experienced radio/TV technician for help.
Notice:
(1) An Unshielded-type power cord is required in order to meet FCC emission limits and also to prevent interference to the nearby radio and television reception. It is essential that only the supplied power cord by used.
(2) Use only shielded cables to connect I/O devices to this equipment.
(3) Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.

3

G802 User Guide

Document: G802-3

Introduction
G802 is a dual channel professional curved screen edge blending processor designed for sophisticated edge blending as well as image warping, stacking, projection mapping…etc.
4 inputs (2x HDMI, 1x DP, 1x VGA) and 2x HDMI outputs are designed in G802. Input supports up to 76801200 @30Hz, 40962160 @60Hz with 4:4:4 full color sampling. Output supports up to 20481080 @60Hz. It is integrated with 10-bit high end processor, motion adaptive de-interlace, low angle smooth algorithm, 3:2/2:2 pull-down and supports non-VESA standard input timing for connecting with various input sources.
Advanced warp technology is embedded in G802. User can perform sophisticated geometry alignment and curved screen edge blending through remote controller, WebGui, USB or Ethernet. Maximum geometry control point is 17×17 grids. Linearity Grid Line Adjustment and Corner Wall image adjustment for mapping image at 90 degrees corner is a new function in geometry alignment. Separate RGB gamma correction for edge blending color fine-tune, individual color correction for each output, fine pixel color uniformity and 9 regions non-edge blending area black level uplift are also embedded in G802. Users can see real time geometry and colour adjustment to get optimized result.
HDMI 2.0 loop out supports daisy chain connection up to 76801200 @30Hz and allows large display with multiple units cascaded. Video wall function in G802 is to crop and allocate source image for each projector and set overlap pixels for edge blending. Complete curved screen edge blending can be achieved through remote controller or Ethernet without PC software, video distributor and splitter.
G802 is designed to support programmable EDID and non-VESA standard input. User can create any EDID timing in the range between 1024×768 and 3840×2400 in order to optimize video performance.
Using G802, users can replace high end projector with low cost projector without lens shift, warp and edge blending. It provides easy configuration, low entry barrier, cost effective, reliable and flexible solution.
Dual power supply system is embedded in G802. User can use either AC power 100V-240V power supply or DC 12V 2A power supply with external DC 12V power adapter. When apply AC power supply, user will have one DC 12V 1A output for signal extender. Standard delivery will be packed with AC power cord.

4

G802 User Guide

Document: G802-3

Functions and features
A. Input and output:
1. Input ports: 2x HDMI, 1xVGA, 1x DisplayPort – HDMI & DisplayPort support 40962160 @60Hz, 76801200 @30Hz with 4:4:4 sampling without compression. VGA supports up to WUXGA or 205MHz analog input signal. – Connect with variable video sources and support none VESA standard input resolution. – Supported progressive and interleaved input signals.
2. Output ports: 2x HDMI. Selectable output resolutions: XGA, WXGA,1280×720, 1280×1024, 1366×768, 1920×1080 (24/30/50/60Hz), 1920×1200 (30/60Hz), 2048×1080/60, 1024×768 @120Hz, 1280×720 @120Hz, 1280×800 @120Hz. – Support HDR input signal but no HDR effect in the output. – All outputs are RGB 4:4:4 progressive signals. – Selectable 8-bit/10-bit Deep Color mode for each output port.
3. Loop out port: 1x HDMI 2.0b (supports 4096×2160 @60Hz & 7680×1200 @30Hz)
B. Image warp, geometry alignment and edge blending
1. Selectable grid pattern color and size for geometry alignment from 8-120 pixels in H&V. Default size is 3232 pixels. User can also apply external pattern for geometry alignment.
2. With full functions for quick 4 corner alignment, vertical and horizontal keystone correction, Pincushion & Barrel adjustment, image warp and image 90/180/270 degrees rotation and flip.
3. Each unit controls dual projectors and can be cascaded to support unlimited number of projectors. 4. Integrated with full function IR remote controller. Manual geometry alignment via Remote controller and
WebGui up to 95 control points with H=+_ 1200 pixels and V=+_1200 adjustment range in full HD output (4 corners + warp adjustment). 5. Gwarp3 PC tool is available for warp and geometry alignment up to 17×17 control points with H=+_1200 pixels and V=+_1200 pixels adjustment range through USB or Ethernet. After finishing geometry alignment, the parameters can be stored inside GeoBox and no more PC tool is needed. 6. Corner Wall geometry alignment at 90 degrees corner wall up to 900 pixels adjustment range in 4 corners and H&V directions and 900 pixels position adjustment in curvature point. 7. Linearity Grid Line adjustment function to move grid lines position for quick geometry alignment. 8. 4 directions edge blending up to H=1920, V=1200 overlapped pixels for flat, curved & cylindrical screens. 9. Independent RGB gamma selection for edge blending color fine.

5

G802 User Guide

Document: G802-3

C. Black level uplift
Precise black level uplift at multiple areas (up to 9) to compensate light leakage in the projector optical system in dark environment.
D. Background white balance
White balance and individual color correction for each output channel.
E. High end 10-bit video processor
1. Integrated with 10-bit high end processor with 3D motion adaptive de- interlace, low angle smooth algorithm and 3:2/2:2 film mode detect and recovery function.
2. Complete colour adjustment function, including brightness, contrast, hue, saturation, preset colour mode, independent RGB color adjustment and white balance correction.
F. Edge mask
Image SHIFT to execute edge mask up to 500 pixels following the image after geometry adjustment and [Edge Mask] with 8 adjustment points to provide irregular edge mask with random edge position up to 900 pixels in H&V directions at each control points. Both functions can be executed at the same time.
G. Video wall function
1. Image cropping, split and location assignment for each projector. 2. Video Wall overlap functions up to +_1800 pixels in H&V direction in each edge:
– Flexible aspect ratio adjustment in each edge. – Image position adjustment – Image cropping area adjustment. – Irregular video wall application 3. User can use Overlap adjustment function to stretch 2.35:1 movie to full screen display on 16:9 screen or shrink 16:9 image to full screen display on 2.35:1 screen without changing aspect ratio. 4. Split the image for display devices without additional PC, image splitter or other devices.
H. Image rotation and flip
Image 90/270 degrees rotation, mirror and flip under 4k/30Hz input. In other conditions, flip and rotation supports up to 4k/60Hz input.
I. System synchronization
There are three synchronization modes: 1. Frame Lock: for multiple output synchronization
6

G802 User Guide

Document: G802-3

2. Phase Lock: Quicker mode change 3. Free-Run: continuous output signal while mode change. No re-searching input source in the projector.
J. System control and other features
1. 1.3U housing for easy rack installation. Professional design and reliable. 2. Replace high price projector with low-cost projector and achieve the same functionality. 3. Full function system setup through IR remote controller, USB, WebGui or Ethernet (Including through
WiFi by Mobile or iPad) 4. Firmware update via USB or Ethernet. 5. Gwarp3 PC tool can control multiple processors simultaneously through USB or Ethernet. 6. Internal grid pattern with selective color for easy geometry alignment. 7. RS232 & Ethernet system control compatible with most of control system. 8. User can select blue or black background color when no input signal is detected. 9. Programmable EDID in the range at H=1024~3840, V=720~2400. 10.BOX ID and programmable IP address for convenient multiple unit control at the same time. 11.User can save up to 5 user settings which can be recalled by remote controller, RS232, USB or
network. 12.Automatic power ON/OFF through input signal control. While no input signal is detected, it will shut
down output automatically. User can power ON/OFF complete system through the control in signal source. 13.AC & DC dual Power supply systems. Provide DC 12V 1A output for signal extender while using AC.

7

G802 User Guide

Document: G802-3

1. Content in the packing box
The G802 Dual Channel Video Wall Controller 1x RC-400 IR Remote Controller (without battery) 1x IR Extending Receiver with 1.8m cable 1x AC Main Power Cord Mounting bracket with screw (Option) Please download User Guide & Gwarp3 PC Tool at https://www.geoboxav.com/download-center.
2. Basic operation & setting
2.1. Connecting the inputs

Unprocessed signal Loop out for cascade

HDMI Input source

DP Input source

VGA Input source

HDMI & DP input ports support up to 4096×2160 @60 Hz, 7680×1200 @30Hz. Only HDMI 2.0-1 input signal can be looped out. Loop out signal is unprocessed signal same as
HDMI 2.0-1 input signal. User can connect to next GeoBox for cascade application or as source monitoring signal. User can select from HDMI, DP and VGA input sources and display separate contents for two projectors under below configuration: HDMI 2.0-1 (or HDMI 2.0-2) + DP, HDMI 2.0-1 (or HDMI 2.02) + VGA or DP + VGA. Please select source for CH-1, then second source for CH-2. User can’t select two different HDMI input sources and display separately in two projectors.

2.2. Connecting the outputs

CH-2 HDMI Output Connector (Max. WUXGA)

Loop out for cascade or input source monitoring

CH-1 HDMI Output Connector (Max. WUXGA)

8

G802 User Guide

Document: G802-3

If the system uses only two projectors, user can connect any output to any projector and select projector locations via [Video Wall]–[Pan] menu.
If multiple units of G802 are used and independent content display is required, user needs to arrange the input source and output port connection and let input source be displayed at desire projector.
Once input signal and output ports are properly connected, LED indicator on the front panel will show up. If any of the LED in CH-1 & CH-2 is not showed up, please check the input/output connection and cable.

LED showed up after proper input/output connection
2.3. System connection
For multiple G802 application: connect the signal to HDMI-1, then daisy chain through Loop out port to HDMI input port in next processor.

9

G802 User Guide

Document: G802-3

Multiple G802 application: connect multiple units through loop out port.

Once input signal and output ports are properly connected, LED indicator on the front panel will
show up. If any of the LED in CH-1 ~ CH-2 is not lighted up, please check the input/output connection and cable.
2.4. Input / Output selection & LED Indicators

If Power SW is on, LED will light up

If Input Source is detected, LED will light up

If Output projector is connected, LED will light up

10

G802 User Guide

Document: G802-3

Select CH, then select input port and output resolution. Each CH can select different input. Output resolution will apply to two CH at the same time.

Press CH key to select operation channel.

2.4.1. Input source selection
Press channel selection button to select input port. Default input port is HDMI 2.0-1 for CH1 & CH2.
For one content edge blending display (all-in-one), user can select any input source in one G802 application.
If multiple units of G802 are cascaded for edge blending, user needs to select HDMI-1 input source and cascade to next unit through loop out port for big scale edge blending. If user wants to select other signal sources for multiple unit cascade, user needs to add video distributor (or splitter) in signal source and feeds the same signal to all GeoBox.
User needs to select source for CH-1 first, it will apply to both channels. Then select source for CH-2 if CH-2 requires different source content.
If user wants to display independent content in each projector, user can select any two input sources among HDMI, DP and VGA. User can’t select two HDMI input sources for independent display in two projectors due to system limitation.
In multiple unit cascade system, user still can implement independent content display in each projector through the selection of the input port for each output channel.
2.4.2. Output resolution selection
The output resolution selection will apply to both output channels at the same time. Default output resolution for all channels is 1080p.
The output resolution should be the same as the projector native resolution to get the best video quality. If user changes output resolution, geometry result will also be changed.
User can select output resolution through remote controller, USB or Ethernet.

11

G802 User Guide

Document: G802-3

Output resolution list: XGA, WXGA,1280×720, 1280×1024, 1366×768, 1920×1080 (24/30/50/60Hz), 1920×1200 (30/60Hz), 2048×1080/60, 1024×768 @120Hz, 1280×720 @120Hz, 1280×800 @120Hz. All output default resolution is 60Hz, RGB 4:4:4 and progressive.
User can set EDID to let input source provide desired resolution. However, input resolution is subjected to signal source and may not output desired resolution.
If the output refresh rate is not the same as input refresh rate. The frame lock function will be disabled and it may lose synchronization among output channels. If the input is 4k/30 with FHD/60 output, it will have no synchronization problem. If the input is 50Hz, please select 1080p 50 Hz output to avoid frame repeat issue.
User can click [Info] key to get system information and see input / output signal resolution.
2.4.3. LED indicators LED indicators will show the input/output signal status. Green LED will show up when the input signal is detected. Orange LED will show up when the display device (projector) is connected. If user presses Menu key for 5 seconds on the remote controller, GeoBox OSD menu will be locked and the Power LED will be flashing. To press another 5 seconds, it will unlock OSD menu. If multiple units are used in the system, user can set different ID and use remote controller [85x] key to execute independent control. Press [851] following other OSD keys, the remote controller can only show Box ID #1 OSD and Power LED on front panel in other units will be flashing. User can disable OSD LOCK with [850] command via IR controller.
2.5. Signal connection and Power On
Poor quality HDMI cable and signal source will affect the connection distance and may cause signal noise or show intermittent image.
To ensure all cables are connected correctly, it is recommended to use locking cables.

Complete edge blending system should be connected to one power Distribution Box with proper grounding. Power on the system after finishing all connections to avoid system damage by floating voltage among devices.
When power is switched on G802, the booting time is about 19 seconds and the Input & Output LEDs on front panel will stay “Lighted” all the time for the channel with correct input source and output device connections.
12

G802 User Guide

Document: G802-3

If continuous flashing in power LED, it means the OSD function has been Locked. Please press [Menu] key for 5 seconds to disable [OSD Locked] function. If system lock is done by remote controller through [85x] operation, please press [850] to unlock system control.
2.6. HDMI Loop Out for daisy chain connection

Unprocessed raw signal from HDMI Loop Out to next GeoBox HDMI input port or signal source monitoring
Loop Out provides the same unprocessed source signal from HDMI2.0-1 input port. It supports up to 4096×2160/60Hz and 7680*1200/30Hz.
Input signals from HDMI-2, DP and VGA ports can’t be looped out. If user wants to execute multiunit edge blending through DP or VGA input ports, please add DP or VGA video distributor and feed signal to all G802 and processing modules.
User can connect any Loop Out signal to any HDMI input port in next GeoBox. No specific HDMI input port is assigned.
User can connect up to more than 10 units of G802 through daisy chain connection. The daisy chain connection number is related to the quality of HDMI cables and signal source resolution– good cable or lower source resolution can connect more units. User can also add HDMI splitter at the front end to increase the connection number for large scale video display.
If loop out port is not connected, user can connect to a monitor for signal source monitoring purpose. HDMI Loop Out port is for daisy chain connection. It is not an input port.
2.7. System settings: Box ID, RS232, Ethernet
Box ID, RS232 and Ethernet settings shall be executed through CH-1. The setting result will be applied to complete unit.
User can control or operate G800 settings through Ethernet. Default IP address is 192.168.0.100. When multiple units are used at the same time, user can set different IP address in each G800 so
that each G800 can be controlled independently.
13

G802 User Guide

Document: G802-3

2.7.1. Box ID The range of Box ID is 0 ~ 99 for RS232 command. If user uses remote controller to execute system operation, the Box ID range is 0 ~ 9.
2.7.2. RS232 settings

RS232 is designed with DB-9 connector. User can select baud rate between 11520 and 9600. UART protocol for the control from RS-232 or Ethernet is available in the website.
2.7.3. Ethernet
User needs to connect GeoBox to WiFi Router or switch/hub through RJ45 to LAN port. Then user can control the system through Ethernet.
Crossover UTP cable can be used for direct connection between PC and GeoBox. User needs to set PC TCP/IPv4 with the same domain segment as GeoBox (for instance, to set IP address at 192.168.0.105) and subnet mask at 255.255.255.0). In some PC, normal UTP cable can be used.
Open web browser (Google Chrome or Internet Explorer) and input GeoBox IP address (default is 192.168.0.100), user can see GeoBox WebGui and menu with virtual keys similar to OSD for further system operation. There is no additional software is required.
If user can’t connect the network, please power off/on GeoBox again to let PC detect G800 network settings.
User can set DHCP for the connection. If necessary, please [Renew] DHCP to get IP address before network connection through OSD menu.
Gwarp3 PC Tool is another web tool for system setting and operation. It can also update Firmware or MCU code. Gwarp3 can be downloaded from https://www.geoboxav.com/download-center website.
Each GeoBox can set different IP address for independent operation and control from the same PC.
14

G802 User Guide

Document: G802-3

After get into Network setting OSD, please use < > OSD keys to select OSD menu items and use OSD keys to change IP address.
If GeoBox is connected with WiFi Router (through LAN port), user can control GeoBox through WiFi via PC, iPad or mobile phone.
Default TCP server port is 1266.
CCrorossssoovveerrUUTTPPccaabblele

2.8. How to use IR Remote Controller
IR remote controller has full functions for the operation of G802. IR receiver is on Front Panel. One 3.5ø mm audio connector for IR extender is located at Back
Panel of G802. 1.8m IR extension cable is equipped in the packing. User can add audio cable to extend the distance up to more than 20 meters. IR remote control system is possible to be interfered and cause abnormal or discontinuous operation. Under this condition, Ethernet operation may be the best choice.
Audio connector for IR extender

15

G802 User Guide

Document: G802-3

Setting [Load] shortcut key Power on/off. If power off by remote controller, please power on by remote controller HDMI-2/4/6/8 input port HDMI-1/3/5/7 input port
Work with other function keys to execute function to all channels at the same time. Only some functions are available. Setting [Save] menu (all channels)

RC-400

System Information
Channel selection
OSD Menu operation keypads Input source selection Output resolution selection
[4 Corner] geometry alignment [Warp] curve geometry alignment [Edge Blend] menu [Video Wall] Menu Grid pattern for geometry alignment Video Wall [Overlap] System reset menu

2.9. OSD Lock and unlock in multi-unit application
In order to avoid interference among multiple GeoBox during the installation, user can set ID number for each GeoBox through [Options] Menu. Press number keys in Remote Controller to determine which GeoBox will be controlled.
– 851: control GeoBox ID No. 1 – 853: control GeoBox ID No. 3 – 850: to unlock all units and user can control all GeoBox. – User will see flashing LED on front panel after press 85x number keys. It means the OSD
menu in GeoBox with flash LED is locked and will not be controlled by remote controller. OSD Lock / Unlock: When continuously press [Menu] key in IR Remote Control for 5 seconds, the
OSD function will be locked to prevent from setting change by negligence. To press [MENU] key for 5 seconds again, it will unlock OSD and user can manipulate the OSD again.

16

G802 User Guide

Document: G802-3

2.10. Full screen and native aspect ratio
[Scaling] under [Image Properties] menu is to select the display mode ether following signal source original aspect ratio or full screen display
For edge blending application, please set to [Full Screen] mode. Otherwise, there may be abnormal display in some input timing.
– [Full Screen]: to display full screen image
no matter the input source is in what kind of aspect ratio.
– [Original AR]: the output display will keep
the same display aspect ratio as signal source original aspect ratio. If the input is 4:3, then the output display will keep the same 4:3 aspect ratio.
2.11. Image rotation and flip
Image 90/270 degrees rotation only supports up to 4k/30Hz input signal. Image 0/180 degrees rotation and flip function can support up to 4k/2k @60Hz. When the image is rotated or flipped, the OSD will still keep at original direction without change. The direction for [Video Wall] settings will follow the image direction after rotated or flipped.
– Image 90/270 degrees rotation is for edge
blending with projectors at portrait position to increase image height. There is no need to rotation signal source.
– Image flip is for projector to project image
from rear or top position.
– After image rotation or flip, the OSD will
still keep at the original direction.
2.12. System Power on sequence
If it is possible, please open GeoBox 30 seconds before power on signal source. It will make sure signal source can detect correct EDID. If user doesn’t have source connection, it can be neglected.

17

G802 User Guide

Document: G802-3

2.13. Color adjustment
In edge blending application, color adjustment is important due to multiple units of projector images are combined together.
2.13.1. Global color adjustment: [Picture] – [Picture] can execute below color
adjustment for each processing channel.
– When input is 4:2:2 video:
[Brightness], [Contrast], [Hue], [Saturation] & [Sharpness] – When input is RGB 4:4:4:
[Brightness], [Contrast] & [Sharpness] 2.13.2. Preset Color Temperature and independent RGB color adjustment
– [Color] under [Image Properties] menu
can change preset color temperature and discrete [RGB] color in each channel.
– [Preset Mode]: [Neutral], [Reddish],
[Bluish] – [Custom]: discrete RGB color adjustment

2.13.3. Color adjustment function under [Edge Blend] menu
Below adjustment will apply to each channel separately.
– [Gamma]: for color compensation in
overlap region
– [Offset]: for black level uplift in non-
overlap region (limited adjustment range)
– [Color]: for color white balance correction
(limited adjustment range)

18

G802 User Guide

Document: G802-3

2.14. System synchronization
When the system uses multiple projectors, the image should be synchronized together. GeoBox uses [Frame Sync] to synchronize all outputs based on the input signal vertical sync. When [Frame Sync] is applied, it is possible to lose sync during system setup and cause the projector to re-search the signal source. In order to provide smoother setup, GeoBox provides OSD for user to select different synchronization methods for easy setup.
[Normal] (Frame Locked): We propose to set at [Normal] in most of the applications. When user reset system or adjust video wall settings, user will see projector re-searching the input source.
[Fast]: time to sync the input source will be fast than [Normal]. During the setup period, projector will reduce re-search behavior and will have smoother setup process.
[Disable] (Free-Run mode): when GeoBox changes input source or timing, the output will still send out continuous output signal. The projector has lowest chance to re-search the input signal while system setup. It is recommended to set at [Disable] when execute setup in GeoBox.
If multiple unit application is required, please set it at [Normal] to let all output channels have synchronized image without frame tear or synchronization issue.
If the output refresh rate is not the same as input refresh rate. The frame lock function will be disabled and it may lose synchronization among output channels. If the input is 4k/30 with FHD/60 output, it will have no synchronization problem. If the input is 50Hz, please select 1080p 50 Hz output to avoid frame repeat and system synchronization issues.

19

G802 User Guide

Document: G802-3

2.15. System Reset
User can rest system through below method:
Use small pin to insert RESET hole at back panel for 5 seconds, user will see [Reset to Default] message. It will apply to all channels at the same time. Profile Index data will be erased at the same time.
Open OSD menu to reset the system. It will only be functional in one processing module (2 channels only).
User [Reset] hotkey on remote controller will go to Reset OSD menu for one module only. When operating through OSD or remote controller, user can select to reset [Reset All], reset [Video
Wall setting] or reset [Anyplace] (geometry) setting. When update FW and MCU, Profile Index data will be kept without change unless user executes
RESET from reset hole on the back panel. Reset from OSD or remote controller will not delete Profile Index data. RESET from RESET Hole
on back panel will delete Profile Index data.
2.16. System image aspect ratio adjustment
User can change the aspect ratio of the image with black borders or to stretch the image in specific direction to compensate the aspect ratio difference. The Maximum adjustment range is 1800 pixels in each edge. User can adjust [Overlap] value under [Video Wall] menu to change the cropping area and achieve aspect ratio change.

20

G802 User Guide

Document: G802-3

Activate [Overlap] under [Video Wall] menu
– User can select the channel and the
edge required for edge shift, then adjust Overlap value to see aspect ratio change.
– The image position shift range is
+_1800 pixels in each edge.
If the Video Wall [Zoom] is set to H=1 & V=1, +-1800 pixels edge shift in RH and LH edges is only available under input signal up to 4k/2k @30Hz. Top Edge and Bottom edge are still functional when the input is 4k/60 with Zoom at H=1, V=1.
If Video Wall [Zoom] is set to H=2 & V=2 or above, user can execute up to +_1800 pixels overlap adjustment in all edges up to 4k/60 input resolution. The aspect ratio will change accordingly.
In multiple projector application, when user adjusts Top or Bottom Overlap value in one projector, user needs to adjust the same Overlap value in other projectors to let all projectors has the same scaling factor.
In two projector edge blending, when user adjusts horizontal aspect ratio, user needs to change Video wall Overlap value with the same number in both projectors until getting clear overlap image. In GEOBOX Excel Spread Sheet calculation, if user calculates original Overlap value with 3840 input resolution, after increase 500 pixels in both outside edges in projector 1 (RH edge) and projector 2 (LH Edge), user can shrink the image width. However, the overlap region will become blurred. User needs to re-calculate Overlap value by new input resolution 3840+500*2=4840 to get correct video wall Overlap value. User can also continuously increase overlap value in both projectors to a point that both images can match together.
The adjustment range of 1800 pixels is calculated according to the signal source resolution. If the signal source is 4k/2k and the adjustment value is 1200 pixels, when switching to 1080p input signal, the adjustment value will be converted to 600 pixels automatically to maintain the same image position. If the input signal source is 1080p and the adjustment value is 1000 pixels, when switching to 4k/2k input signal, the adjustment value should be 2000 pixels. However due to the maximum adjustment value is only 1800 pixels, the final image will follow 1800 pixels but not 2000 pixels for 4k input. It means the image aspect ratio will not the same as 1080p input source.

21

G802 User Guide

Document: G802-3

3. Preparation for Edge Blending
3.1. Determine source signal resolution
The image size and watching distance are two major factors to determine source signal resolution and number of the projectors.
If the screen size is 20m and the watching distance is 5m, the signal pixel pitch should be around 5mm (around 1mm for 1 meter watching distance). The system resolution is about 20m/5mm=4000. It means the system resolution should be around 4000 pixels in width and the vertical resolution should follow the projector native resolution. If WUXGA projector is used, the ideal system vertical resolution is 1200.
After determine the system resolution, please make sure all the equipment in the signal pipe line should be able to support this resolution or higher. It includes signal source output, edge blending processor and the total resolution of the projectors after edge blending.
If user uses 8x XGA projector with 250 overlapped pixels, the total projector resolution after edge blending will be 10248-2507=6442 pixels. It means it is enough to use XGA resolution projectors in this 20m screen case. If user uses FHD or WUXGA high end projectors with watching distance at 5m, the final video quality will be very similar as XGA projector under 4k signal source at 5m watching distance but will be better at less than 5m watching distance.
We can provide free service to help customers to make project plan, including system configuration, type of projector, signal source and installation data.
3.2. Determine overlap region size and pixels
GEOBOX provides an Excel Spread Sheet in the website for user to do edge blending plan. During Excel Spread Sheet calculation, user has some flexibility to determine the overlap region
size by different projector resolution, lumens, image size and number of projectors. The most common overlap region is about 20% to 40% based on single projector native resolution.
For 1024768 projector, the overlap range is 102420%-1024*40%=205~409 pixels. GeoBox test pattern default size is 32×32 pixels. Therefore, the final result will be around 7 grids (224 pixels) to 13 grids (416 pixels) for XGA projector and 12 grids (384 pixels) ~ 24 grids (768 pixels) for 1080p & WUXGA projectors. If the projector has accurate color and gamma curve, the overlapped pixel can be lower to 5 grids (160 pixels) in XGA projector. The actual pixel number should be determined based on the required screen size and the projector model used. Under the same screen width, if higher image is required, then the overlap region will be also increased.

22

G802 User Guide

Document: G802-3

User can simulate with different overlap pixels to get reasonable overlap region dimension between 50cm to 120cm. Reasonable overlap region will be easier for overlap color control. When executing simulation, the vertical image size can be over requirement and draw back to required image height through geometry alignment.
GeoBox maximum edge blend range is H=1920 pixels, V=1200 pixels. The black level compensation range is 900 pixels. If user requires black level uplift compensation and the overlap region is more than 900 pixels, please select the outside black level Block to execute black level uplift. The pixel number is based on native projection area without any adjustment from either projector or GeoBox. If necessary, user can adjust the overlap size through geometry alignment to decrease overlap size without changing projector location.
Please note that user can change the grid pattern size from 8 to 120 pixels.
3.3. Relation between Overlap pixels and geometry alignment accuracy
Proper selection of Overlap pixels will affect the control points in geometry alignment. If the Overlap pixel is 25% of the projector native resolution (or GeoBox output resolution), it will have less geometry alignment points due to control points in adjacent projectors will be at the same location. If the overlap pixel is not 25% of the projector native resolution, the control points will be at different positions. 37.5% overlap pixel will double the control points of the geometry alignment if compared with 25% overlap and have the best geometry alignment accuracy.
[9×5 Curved] alignment will cut the horizontal image into 8 sections and the image in each section can be independently adjusted. In different output resolutions, there will be different pixel number in each section: XGA: 1024/8=128, WXGA: 1280/8=160, 1080p: 1920/8=240.
If the overlap area between two adjacent projectors has the same or multiple number as above, the geometry alignment control points in overlap region will be less. User can reduce one or two grids in each projector (32 or 64 pixels) in overlap area to increase the control points in overlap region for more accurate alignment between adjacent projectors.
Edge blending on flat screen, it will be easier for geometry alignment. User doesn’t need to consider the relation between overlap pixels and geometry alignment accuracy.
Below figure is an example for [9×5 Curved] alignment in 1024 resolution:
– 25% overlap region:
The adjusting points in projector A & B will be at the same position in overlap region

23

G802 User Guide

Document: G802-3

If the overlap is 256 pixels (25%) in XGA resolution, total adjusting points in overlap region are 3*5=15. The adjusting points in projector A & B will be at the same position in overlap region. User will have less adjustment flexibility. If increasing two grids (64 pixels) to 320 overlap pixels, user can have 30 adjusting points to get more accurate geometry alignment.
– 37.5% overlap region
The adjusting points in projector A & B will be separated in 37.5% overlap region and increase geometry alignment accuracy.

– Recommended overlap pixels in different output resolutions

Below is the list for the accuracy of geometry adjustment in different overlap pixels:

GeoBox output resolution 1920*1200

1280*800

1024*768

Min. adjusting flexibility 256/480/704

320/480/640

256/384/512

Max. adjusting flexibility 352/608/832

224/256/384/416/544/576 192/320/448/576

24

G802 User Guide

Document: G802-3

3.4. Get installation data from Excel Spread Sheet
GEOBOX can provide an Excel Spread Sheet for user to calculate necessary installation data for the project. It is important data for installation and setup.

Below are assumptions for the above 3x projectors edge blending system Excel calculation.
Screen Size: 6.5m1.5m with watching distance within 2m (pixel pitch less than 2mm) Input signal resolution: 3840800 (Pixel pitch is 6500mm/3840=1.7mm = 1.7m watching
distance, optimized vertical resolution is the same as projector native resolution: 800)
Number of projectors: 3 projectors Projector resolution and lumens. 1280800 (native resolution), 3200 Lum Overlap pixels and dimension. 8 grids=832= 256 pixels (50cm) Projector throw ratio: 1.2-1.7 (based on projector spec)
How to operate GEOBOX Excel Spread Sheet
Input all the data in Yellow column, including Source Resolution, Projector Resolution
(GeoBox output resolution), Screen size, Projector throw ratio, Projector Lumens, No. of projector and Overlap Pixels. User can try different configurations and select the most cost effective one with the image height a little higher than required.
User will get below data from the Spread Sheet. – Final image size for each projector is 250cm1.56cm with Overlap region of 50cm in width. – The image height should be higher than the required one. User can shrink the vertical
height to required dimensions through geometry alignment. The vertical adjustment range in each edge is 600 pixels.
– Optimized content resolution: 3328800 (This is the ideal resolution to set EDID). It is
suggested to select the same vertical resolution (800) as projector native resolution to get the best result.
25

G802 User Guide

Document: G802-3

– Installation distance: 3m-4.25m. – It is calculated from throw ratio and image wide for each projector. (2.5m1.2=3m,
2.5m1.7=4.25m)
– The final luminance is 819 Lux. It will be enough for inside room environment. – The overlap value in Video Wall setting:
When user sets Video Wall Zoom, it will split the image equally for each
projector. The projectors will be installed with some Overlap Pixels for edge blending. Therefore, Overlap Value is to crop more pixels for each section based on the Overlap size between two adjacent projectors.
LH Projector: select RH edge: +197 (to crop more 197 pixels for LH projector.
These 197 pixels are based on source resolution.
Projector (Center): LH edge=+98, RH edge=+99 (total 197) RH Projector: LH edge: +197 If the input source resolution while video wall setting is different from the
calculation, the result will be wrong.
After finish setting, user can check the image, if some overlap area is blurred,
user can increase or decrease Overlap Value with 1-2 pixels and select optimized one.
It is allowed to have different overlap pixel among projectors. “Irregular” Spread Sheet is
required to calculate the data.
Please contact dealer or factory to get necessary assistance for the Spread Sheet.
3.5. Apply Spread Sheet data for projector installation and GeoBox setting
3.5.1. Installation data from Spread Sheet from previous section:
Image size for each projector: 250cm *156cm Overlap region: 50cm Installation distance based on throw ratio 1.1-1.7: between 300cm-425cm Installation height: install the projector at a position with minimum keystone at both vertical edges.
3.5.2. Mark projection region for each projector
Based on the calculation data, user can easily determine the image location for each projector. Using laser Level tool and mark the locations for each projector with paper tape, including 4
borders and center line of the screen. The paper tape shall not damage the surface of the screen.

26

G802 User Guide

Document: G802-3

3.5.3. Installation the projector To install the projector at a location as showed above with the image just a little over required region at any point. Too large image will lose image resolution and brightness. Minimum keystone effect will optimize the image quality with less geometry alignment. The image height from the projector can be higher than required and user can draw down the image height through geometry alignment. The adjusting range is up to 1200 pixels in the top and bottom edges.
During the installation, Laser Level is a good tool to get correct horizontal and vertical line and make sure each projector can cover correct display
3.6. Projector settings before edge blending
Please reset all projectors to factory default settings. Set to ceiling mount if necessary. Disable below items:
Auto keystone, auto aspect ratio, auto color compensation, auto source. Select a display mode with gamma 2.2 or standard display mode. After edge blending, if user still
sees some banding in overlap region, please select the best one from different display modes. If there is color deviation among projectors, please try to correct color difference through projector
color adjusting function to let all color as close as possible. Enable [multiple projector display] mode if the projector has this setting.
27

G802 User Guide

Document: G802-3

3.7. GeoBox settings before edge blending
Use small pin to insert into RESET hole on the back panel of GeoBox for 5 seconds to reset GeoBox to default setting. This [Reset] will apply to all channels at the same time.
Select channel number, then select input port and output resolution in each channel separately. Set output resolution to be the same as projector native display resolution. Each channel shall set
output resolution separately. When set 1080p output for WUXGA projector, the display image will be lower. Connect with a signal source to HDMI-1, then connect loop out port to HDMI-3 via HDMI cable. The signal source for installation should be no less than 1080p. Check input/output LED indicators and make sure to have correct system connection. User can set [Frame Sync] at [Disable] to eliminate [Source Re-search] in projector during setup.
After finish the setup, please set to [Normal] to get synchronization in all outputs.
4. Geometry alignment
4.1. Select the right Grid Pattern for geometry alignment
Grid pattern is required for geometry alignment. User can activate test pattern through [Pattern] hotkey in remote controller or through WebGui and Gwarp3 PC tool.
The default grid size is 32*32 pixels. User can select different grid size from 8-120 pixels. Each channel can be set separately. In edge blending, the grid size in all channels shall be the same.
The OSD show-up time can be determined by [Options] [Accessibility] [Menu Time Out]. If set at “0”, the OSD will show up all the time unless input timing is changed or OSD [Exit].
If user finds different grid size in different projectors, please check the grid pattern size, output timing setting and the aspect ratio settings in each projector. GeoBox needs to set at [Full Screen] display mode under [Image Properties] [Scaling] menu.
If user executes Geometry alignment, the pattern will appear automatically after select the adjusting point and press Enter.
There are 6 pattern styles for user to select. When user presses [Pattern] key, it will circulate from [White] [Red] [Green] [Yellow] [Cyan] [White grid

• background] [OSD menu + Background] If user wants to apply his own test pattern, please select the last transparent pattern mode to show up background user pattern.
  User can select different pattern color for each projector while doing edge blending setup. Note: some projector RGB pixels are not at the same location. It will cause position deviation.
  Please recheck with White grid pattern for final result. User can see geometry adjusting value when select [Background + OSD] display style.
  28

G802 User Guide

Document: G802-3

PS. User can select the last pattern mode [OSD Value + background] and apply external test pattern for geometry alignment.

4.2. Grid pattern pixel size selection
The pixel size in grid pattern for geometry alignment is selectable to meet high end simulation system geometry alignment requirements. The grid size in both horizontal and vertical directions is from 8 to 100 pixels with 1-pixel increasement. H&V grid size will be the same. User can select grid size under [Edge Blend] menu.
Default grid size for both H&V directions are 32×32. If 120 pixels grid size is selected, the horizontal grid pattern will be at the same position as 17×17
geometry adjustment control points. If 30/60 pixels grid size is selected, the grid pattern will also have some horizontal grid points that will match 17×17 control points. It will be convenient for some applications. In order to get optimized result in video wall [Overlap] value, user can use GEOBOX Excel Spread Sheet and apply an overlap pixel in the Spread Sheet to get a near integrate number in Video Wall [Overlap] value, then select the grid size to match this overlap pixel. In low resolution projector with low overlap grid number, user can select a grid size to maximized the overlap region to improve edge blending quality. For example, when the overlap pixel is only 186 pixels, if user selects 32×32 pixels as grid size, then user needs to reduce the grid size to only 160 pixels (5 grids) to let the grids from adjacent projector to stack together. If user selects a grid size of 31×31, then user can keep 186 pixels (6 grids) as overlap pixels.
29

G802 User Guide

Document: G802-3

Below is the OSD menu for the selection of grid size.

4.3. Geometry alignment
Geometry alignment is to align the image position to let the projection image match the screen and also let image grids between two adjacent projectors be combined together. This step will take most of the time for edge blending. User can execute geometry alignment through remote controller, Gwarp3 PC tool or WebGui through Ethernet connection.

30

G802 User Guide

Document: G802-3

Test pattern hotkey [3×3], [5×3], [9×5] Warp hotkey [2×2] 4 Corner adjustment hotkey
4.3.1. Geometry alignment through remote controller
Please be familiar with OSD operation from remote controller, including activating grid pattern, channel switching and hot keys for [4 Corner], [Warp], [Video Wall], [Edge Blend], [Pattern] and [INFO].
[OSD Time Out] is default to “0”. It will ensure the OSD and grid pattern will not be turned off automatically. Input timing change will disable OSD and exit from grid pattern.
User can install IR extender receiver near screen for easy GeoBox operation (Please add audio extending cable to extend the distance up to 20 meters). If multiple units of GeoBox are used and IR receivers are put together, please set [Box ID] for each GeoBox so that user can control each GeoBox separately through [85x] command. Please see more details in section 10.3.1.
Each channel should execute geometry, video wall setting and edge blending setting separately.
4.3.2. Activate Grid Pattern
Use channel selection keys and [Pattern] hotkey to show grid patterns in all projectors. Press [Pattern] key again will change grid color. To set two different pattern colors in adjacent projectors will be more convenient during geometry alignment.
If user finds the grid size between adjacent projectors is different. Some possibilities: – The projection image sizes between two projectors are different (Zoom setting or projection distance is different). – Output resolution settings are not the same. – Projector aspect ratio setting is different. – GeoBox is set at [Original AR]. It shall be [Full Screen]. – Set different grid pattern size in each channel.
If user doesn’t use GEOBOX Excel Spread Sheet to calculate the image size in each projector, please try to set the same projection height prior to geometry adjustment. In this case, the image width and overlap grid size for all projectors will be similar and is easy for geometry alignment.
31

G802 User Guide

Document: G802-3

4.3.3. [2×2] 4 corner geometry alignment
In most of applications, no need to do keystone correction in the projector before geometry alignment.
If using short throw ratio projector in curved screen display, the image will have big distortion. Please use projector to do geometry alignment first before GeoBox.
[2×2] alignment will adjust whole image with the same scaling factor. [Warp] alignment will adjust only some portions of the image.
Please follow the sequence [2×2] [3×3] [5×3] [9×5] [17×17] to do geometry alignment to ensure entire image will have uniform scaling factor.
Apply [2X2] Corner geometry alignment and draw the corners to pre-marked locations. If no pre-marked location, please use [2×2] alignment to let the image in each projector with the
same horizontal position and also let the vertical lines without keystone effect. Measure the image size in each projector, to reduce the size of the larger image and let adjacent
projectors have similar grid size and grid number in overlap area. If the screen is curved, it is possible to have some image inside or outside the screen after 2×2
adjustment. However, it doesn’t matter once the image covers entire screen before 4 corner adjustment. [Warp] alignment can adjust the image position back to required position.
[2×2] 4 Corner hotkey

4.3.4. [3×3], [5×3], [9×5], [17×17] Warp alignment After finish [2×2] corner alignment, apply [3×3 Curved] geometry alignment to let 9 adjusting points be located at the required position including 4 corners, edge center points and center line position. Please use [5X3] & [9×5] for further geometry alignment and let all the grids in overlap area with good grid stacking from two projectors. For curved screen, if there will be some difference in the grid size in adjacent projectors, user can use Linearity Grid Line adjustment (in next section) to adjust the grid size and finish the image position fine tune within shorter time.
32

G802 User Guide

Document: G802-3

After finish Warp alignment, user can use [2×2] for complete image position fine tune without changing the Warp result. If user executes [3×3] alignment again after [9×5] alignment, [9×5] grid position will be reset and only keep [3×3] grid point information.
In ideal condition, all grids in edge blending area between two adjacent projectors shall be aligned together. In some special case, the vertical lines in edge blending area have some gap and can’t match 100%. Please try to align the grids near center of overlap region with good stacking. It allows small image shift in both sides of the overlap region because edge blending will reduce the effect of the mis-alignment in side borders. User can also adjust [Overlap] value in video wall settings to compensate this deviation and keep reasonable image quality.
After the above processes, if the grid pattern in edge blending area still can’t stack together, user can reduce one or two overlap grids from adjacent projectors to separate the adjusting points in each projector and get more accurate geometry alignment result. If the result is still not good, please use [Gwarp3] PC tool to apply 17×17 grid point adjustment. The adjusting result in remote controller can be further adjusted through Gwarp3 PC tool directly.
Geometry alignment range from remote controller can be up to 600 pixels in [2×2] + 600 pixels more in [3×3] for one corner/edge.
If over GeoBox geometry adjustment range, the image will be broken. Please adjust projector installation position or use projector geometry alignment function to cover some adjustment.
Ultra-short throw ratio projector is not suitable for curved screen display due to big image distortion. Once user can execute geometry alignment to required position, the image quality will be reduced, especially in the Text mode.
After geometry alignment, all the grid patterns in overlap region should be stacked together.
[3×3] warp hotkey

33

G802 User Guide 4.3.5. Linearity grid line adjustment

Document: G802-3

The control point can shift grid lines in both horizontal and vertical directions.
Linearity grid line adjustment is under [3×3], [5×3] & [9×5] warp alignment menu. User can select the control point, then press ENTER to do grid line adjustment. Each control point can shift the image in both horizontal and vertical directions.
When user projects the image to curved screen, the image grid size will continuously change–the grid size at the center will be bigger than both sides. Ultra-short throw projector will be more serious. Linearity grid line adjustment is designed to correct this kind of grid line gap difference.
Linearity Grid Line adjustment can shift both horizontal and vertical grid lines. The maximum adjusting points in OSD menu is H=9, V=5. For [3×3], the adjusting range is +_600 pixels in each direction. This function is not available in Gwarp3 PC tool.
This function can co-work with Warp and Edge Blending function.
Grid line gap adjustment

34

G802 User Guide

Document: G802-3

4.3.6. Corner Wall geometry adjustment
Important note: When apply Corner Wall function, all the other geomtry alignment function will be disabled. User can only execute geometry alignment through 8 points of Corner Wall adjustment. 4 corner control points can execute image 4 corner alignment same as [2×2] geometry alingment function. Edge Blend function will be still available.
Corner Wall alignment allows user to adjust the image at 90 degree corner wall. It can execute horizontal and vertical corner alignment. User can only select either horizontal or vertical alignment at one time. This function can co-exist with edge blending function but not warp function. The image position can be adjusted as below:
4 corner image positions The transition position of the image in horizontal or vertical direction The maximum Corner adjusting range is +_ 900 pixels and the curvature location adjusting range
is +_900 pixels. User can’t use ultra-short throw ratio projector for corner wall application. Otherwise, the image
distortion will be too big to be adjusted and may also create focus issue. The ideal projector throw ratio should be larger than 0.8:1.

35

G802 User Guide

Document: G802-3

Example A: Single projector application

Example B: Dual projector application

Example C: Three projector application

Corner wall application on curved screen If user wants to implement Corner Wall function on curve screen, user can connect the signal to another GeoBox to do warp alignment and to connect the output to the input port of the channel for Corner Wall alignment. Then user can execute curve alignment and Corner Wall adjustment at the same time. The image latency will be double in this case.
36

G802 User Guide

Document: G802-3

Important notice on curved screen application
Refer to curve image alignment on wall corner, if the curve radius is larger than 1.5 meters, user can use normal throw ratio (larger than 1.0) projector for the alignment. If the radius is less than 1.5 meters, we proprose to change the design with 90 degress corner wall. Then user can apply [Corner Wall] alignment or project the image to separate wall from each projector. We propose to use projector with throw ratio larger than 0.8:1 to get better result. Throw ratio less than 0.5:1 may create alignment issue.
4.4. Geometry alignment via Gwarp3 PC Tool
Gwarp3 is a PC tool executed through PC. No software driver is required. Once user opens Gwarp3 and connects with PC through Ethernet or USB, user can execute edge blending settings through PC keyboard and mouse up to [17×17] control points. After finish the setup, user can save the result to Box and no more PC is required.
User can backup system settings in PC and copy to other units.
Firmware and MCU code update can be executed through Gwarp3. User can control multiple units
at the same time through different IP address. Please see download “Gwarp3 PC Tool Quick User Guide” from website to get more details.

37

G802 User Guide

Document: G802-3

4.4.1. Geometry alignment through [Warp Adjust] System Reset [CTRL + Shift + R]: Reset selected channel [CTRL + Shift + A]: Reset all channels (from CH1-CH4) Input / Output resolution and Profile Index settings will remain the same without reset.
[Warp Adjust] [P]: Enable grid pattern with different colors (R, G, B, C, M, W) & styles [CTRL + P]: Disable grid pattern
Start from [2×2] alignment, then follow [3×3] [5×3] [9×5] [17×17] sequence for
geometry alignment. If go back to lower control point adjustment, it will reset higher control point adjustment. [2×2] alignment will not reset curve adjustment result. [M]: Change Adjust mode from [2×2] [3×3] [5×3] [9×5] [17×17] (PC language shall set to English, otherwise, some hotkey functions may not work) Use [CTRL + Arrow] key to select control point. Use [Arrow] key to adjust control point position with default step (8 pixels/step) Use [Shift

• Arrow] key to adjust control point position with 1 pixel/step.
  Save settings Click # key under [Save to Box] to save the setting to Box. Each channel shall save separately but can save to the same # for convenient recall. After finishing all channel geometry alignment and [Save to Box], click [System] to save all channel settings into [Profile Save]. Click [Save Setting] to save data into PC as backup or copy to another Box.
  Geometry alignment data editing User can click [Load map data] near User Map icons to recall warp data and do further editing by [17×17]. Geometry alignment result from remote controller can be further edited by Gwarp3 PC Tool by [9×5] or [17×17]

38

G802 User Guide

Document: G802-3

5. [Video Wall] setting
The purpose for Video Wall Setting is to split the image and assign specific image to each projector. The overlap pixel setting is to change the cropping area for each projector based on the overlap size. Overlap value shall be accurately adjusted to avoid blurred image in overlap region. All of these functions are under [Video Wall] menu.
Each channel shall execute [Video Wall] settings separately.
– Press Menu Keypad on Front Panel to
enter [Video Wall] OSD menu.
– [Video Wall] hotkey on the bottom right
position of the remote controller is available for quick access.
– Video wall function can crop image for
edge blending and assign to projectors.

[Video Wall] menu hotkey
5.1. [Zoom]: split the signal source
Use [Zoom] to split input image in horizontal and vertical directions. Maximum split images are 15×15 in both horizontal and vertical directions from single input source.
39

G802 User Guide

Document: G802-3

u vw
u vw x yz { |}

For 3 projectors at horizontal position, Horizontal Zoom=3, Vertical zoom=1
For 3×3 displays (9 projectors), Horizontal Zoom=3, Vertical Zoom=3

5.2. [Pan]: assign image location

– Use [Pan] to determine the location of
each split image in both horizontal and vertical directions.
– Default setting:
Horizontal Pan=1
Vertical Pan=1

u vw x yz { |}

For No. w projector: For No. z projector:

Horizontal Pan = 3

Horizontal Pan = 3

Vertical Pan = 1

Vertical Pan = 2

5.3. [Overlap]: crop the right image for each projector

– Use [Overlap] to adjust overlapped pixels
between two adjacent projectors
– It can also change image aspect ratio. – Max. Overlap range is +_1800 Pixels

40

G802 User Guide

Document: G802-3

In multiple projector applications, the Overlap value can be determined by GEOBOX Excel Spread Sheet as showed in below chart with RED mark. User can follow this value to get the right overlap settings with clear image.
This Overlap value will be calculated based on several factors–such as input resolution, projector resolution, quantity and overlap region size.
If the overlap regions have different size due to installation position limitation, please use Irregular Excel Spread Sheet to calculate overlap value.
User can use Video Wall overlap setting to fine-tune the image position in overlap region. It can compensate geometry mis-alignment and let image become much clearer.
If no Excel spread sheet is available, user can apply video wall test pattern and execute overlap adjustment. Once the pattern can match together, it is done with the right overlap value.

5.4. [Position]: shift image position without changing image size
After cropping, user can shift image position at H&V directions without changing image size. Usually, it is for video wall application to fine tune image position. In projector edge blending application, user only changes Overlap value in one edge but not execute image shift.
41

G802 User Guide

Document: G802-3

6. [Edge Blend] settings
Edge Blend is to merge the images from multiple projectors to become one seamless image. The scaling factor between two adjacent images shall be the same. It means the image size under
the same resolution should be the same. Geometry alignment is required before edge blending:
To let the image has the same grid size (same scaling factor in both horizontal and vertical
directions)
To let images overlapped together in horizontal lines and vertical lines.
Sub-menu under [Edge Blend] menu
[Edge]: select the right edge and set overlap pixels. The pixel no. is same as the overlap grid
size multiple grid number. If overlap is 10 grids, the overlap pixel is 320 in default grid size.
[Shift]: to shift image edge blending location and implement [Edge Mask] function for non-
overlapped edges with black background.
[Gamma]: adjust gamma value in [Transition] and [Gain] in each channel to improve banding
effect in overlap region.
[Offset]: to do black level uplift in non-overlapped area to compensate light leakage in
projectors.
[Corner]: to do precise [Offset] location alignment. [Color]: to do White Balance correction for individual projector. [Mask]: Mask out unnecessary image in the image edge. [Grid]: set grid pattern size for Horizontal and Vertical directions.

42

G802 User Guide

Document: G802-3

[Edge Blend] hotkey
6.1. [Edge]: select location and set edge blending value
[Edge] is to select the edge for edge blend and set overlapped pixel number. User can execute edge blending at any edge. Maximum edge blend pixels are H=1920, V=1200. Color indicating lines will appear when set edge blending pixels. User needs to adjust the color indicating lines to match together (green to green, red to red). The
final overlap value is the same as actual overlap number (grid size * grid number).
For 3 projector edge blending as example:
– To select [Right Edge] for LH projector – To select both [Right Edge] & [Left Edge] for center projector.
– To select [Left Edge] for RH projector
6.2. [Shift]: shift edge blending position and execute Edge Mask
[Shift] has two functions: one is to shift [Edge Blend] location and another function is to do [Edge Mask] in not [Edge Blend] borders.
When user selects the edge in Edge Blending area, user can apply “+” value (0 to +500) to shift the whole [Edge Blend] position. If the value is “-” (0 to -10), user can see color uplift in the edge of the Edge Blending area. The purpose is for user to do color fine tune in edge blending area.
When user selects the edge without [Edge Blend], [Shift] will change image border location with black background without changing image size and location. It implements [Edge Mask] up to 500 pixels following the final result after geometry alignment.
43

G802 User Guide

Document: G802-3

– [Shift] is to shift [Edge Blend] location in
[Edge Blend] edge. If the value is set to “-“, it will uplift the color in the border of edge blending area.
– It will execute [Edge Mask] on the edges in
non-overlapped region.
6.3. [Gamma]: Color correction in edge blending area
Different projectors may have different gamma curves. Different “Display mode” in the same projector will also have different gamma curves. Edge blending default gamma curve is 2.2. These gamma curves will affect the color in edge blending area. The common issue is gray color banding effect. These issues are more significant in pure color or white back ground display.
[Gamma] function is to adjust the gamma curve in edge blending area for each projector through independent RGB gamma curve adjustment.
The major reason for banding effect in edge blending area is related to projector color setting and gamma curve. All projectors shall have the same gamma setting and [Display Mode].
User needs to select right display mode (gamma curve 2.2 is the best gamma value in the
projector setting) and fine tune the color difference among the projectors before edge blending to minimize the possible banding effect in edge blending region.
Some projectors have [Multiple unit application] menu for user to choose while executing edge
blending function.
Please disable [Dynamic] color function in the projectors. These functions may change
gamma curve based on the content and affect final edge blending image quality.

44

G802 User Guide

Document: G802-3

Three sub-menus under [Gamma] menu:
[Transition] Gamma:
To set edge blending area gamma value via discrete RGB gamma curve value adjustment. The gamma value range for each RGB color is from 0.9-3.0.
When overlap region is brighter, user can decrease the gamma value and if overlap area is too dark, user can increase the gamma value to improve video quality.
User can apply pure color RGB and adjust R.G.B. value separately to see the difference. Transition gamma adjustment may not solve color banding issue once the projectors
gamma curves are not the same, smooth or have variation among projectors.
[Gain] gamma:
This function can change the gamma curve in each projector separately. It can further improve edge blending result, especially while two adjacent projectors have different
gamma curve. User can start with one projector in one color first and see the color change in overlap area. Then
adjust other colors to match required color. Usually, when user adjusts Gain Gamma in the first projector, it will affect the color in one side of
the overlap region. User can adjust another projector to compensate another side. The adjusting value for adjacent projector can be different. [Offset] gamma: It will apply to each projector separately and is only available when implement black level Offset adjustment. It determines the percentage of the Black Level [Offset] effect. [Offset] gamma adjustment can be served as a tool to compensate the brightness difference between two projectors. It is only functional when user applies Black Level [Offset] function. [Offset] gamma:
[Offset] gamma will change RGB gamma at the same time. This function is only available when user implements [Offset] function for black level uplift. After user
implements [Offset] setting for black level uplift, user can adjust [Offset] gamma to change the gamma curve for black level uplift. User can use this function to fine-tune the brightness level between overlap region and non- overlap region in edge blending application.
Below picture shows banding effect in edge blending area
This issue is related to many factors: Screen: gain value under 1.0 is recommended Projector: shall be the same model with the same gamma and Display Mode settings. Usually, Laser projector can get good result due to accurate gamma and color. Signal content: to avoid pure color or pure white color content. Multimedia is the best. Overlap range: too small overlap range will cause banding effect. 20%-40% with more than 60 cm
width is recommended.

45

G802 User Guide

Document: G802-3

6.4. Black level uplift: [Offset] & [Corner] adjustment
If the ambient light is dark, audience will see grey region in Edge Blending area. It is due to light leakage from projector optical system and can’t be fixed by signal processing. Low contrast ratio projector will be more serious. The only solution is to apply [Offset] function to uplift the color in non- transition area to compensate the visual color difference.
Projector with higher native (not dynamic) contrast ratio will have less light leakage. Usually, DLP projector will have higher contrast ratio with better result. Laser projector has high contrast ratio with accurate color and gamma setting and is suitable for edge blending.
[Corner] function is to do accurate position alignment.
46

G802 User Guide

Document: G802-3

6.4.1. [Offset] [Offset] is to set the level for color uplift. It should be determined based on the brightness level in overlap region.

User can select the region for black level uplift and apply the offset value in R.G.B. color to compensate the color difference between overlap region and non-overlap region.
If user executes more complicated edge blending such as 4 projectors at 2×2 location. The maximum areas for black level uplift may increase up to 9 locations.
RGB color adjustment range is from 0-255. For DLP projector, the adjusting value is near 60-90. For LCD projector, the adjusting value is near 80-120. RGB is independent.
6.4.2. [Corner] Adjust the correct location for black level uplift by [Corner] menu. When user adjust the location of the control points, user will see the change of color uplift position. This region starts from original projection area before geometry alignment. It is not the same as overlap area. The maximum adjustment range is +_900 pixels in vertical direction and +_1200 pixels in horizontal direction.
47

G802 User Guide

Document: G802-3

Projector display imager, such as DMD, LCD and LCOS, will have some image borders due to active display window is not at full range of the imager. In dark environment, viewer may see a little light leakage in image borders. It is outside active display area and can’t be fixed.
If user finds some position deviation between Black Level uplift border and projector Light Leakage border during [Corner] adjustment, it is caused by poor geometry alignment between two adjacent projectors. Please make sure to have good image grid alignment in that area.
Below is to show color adjustment in black level uplift areas through above method. It can show different colors with different shape of the borders. Maximum adjusting area is nine.

6.4.3. Procedures for black level uplift Two projector horizontal edge blending as example. Turn off ambient light and apply a black background content on the screen. If no black background content, user can disconnect input signal to get black image. Projector may have dynamic color adjustment function. In ideal case, please apply the actual display content and select the location that will show clear light leakage image. It can make sure to get the best result.
48

G802 User Guide

Document: G802-3

Procedures for black level uplift: Select CH-1 (LH projector), select center block as showed in red circle. Press [OK] and adjust RED color to 150. User will see red color enhancement. [Back] to [Corner] menu. Start from [Right Edge] (top, middle, bottom) and adjust uplift location to match light leakage. [Back] to [Offset] Select center block RED adjust the value to 70 Fine-tune R.G.B color to let LH projector have similar color in overlap and non-overlap area. Fine-tune the uplift location again by [Corner]. If necessary, please fine-tune geometry alignment border line position to get perfect result. Select CH-2 (RH projector), execute the same procedures as CH-1 to finish black level uplift procedures.

49

G802 User Guide

Document: G802-3

6.5. [Color]: Individual projector white balance and color correction
The [Color] function can be applied to individual projector for white balance and color difference correction through separate RGB Gain and Offset adjustment. It will be helpful to compensate projector color difference, lamp brightness decay and lamp replacement issue. It can’t compensate the color banding in edge blending region. Edge blending color banding is mainly caused by gamma curve setting in the projectors.
– Under [Color] menu, user can adjust
separate RGB [Gain] and [Offset] value to change the color and white balance in each projector.
– [Gain] is to change the color slope and
take more effect in brighter region.
– [Offset] is to add value in all level of
brightness (0-225) and take more effect in darker region.
– When apply [Color] adjustment, it will
affect entire color in the projector. Please check with different video contents and minimize the side effect.
In edge blending procedures, user needs to adjust the color from projector first. If it is still not enough, user can use [Color] function to do further adjustment. Please note that, any color adjustment will reduce the color dynamic range. User needs to check the result with full range color image.
6.6. Edge [Mask] There are two edge mask functions in G800. One is image

to do edge mask with black background in each edge up to 500 pixels. [Edge Mask]: There are 8 control points for edge mask. When user moves the position for each
control point, it will result various edge mask effect. The maximum position adjustment for each control point is +_ 900 pixels in H&V directions. The starting point for [Shift] is based on the image position after geometry alignment and the starting point for [Mask] is calculated from the original edge position before geometry alignment.
50

G802 User Guide

Document: G802-3

When implement edge mask, OSD menu will be also masked. To imlement through Gwarp3 will be more convenient without OSD masked issue.

51

G802 User Guide

Document: G802-3 Another Image [Mask] example

6.7. [Grid] (Determine grid pattern size)
The pixel size in grid pattern for geometry alignment is selectable. The grid size is from 8 to 120 pixels with 1-pixel increasement in both horizontal and vertical directions. H&V grid size will be the same. User can select grid size under [Edge Blend] menu. Default grid size for both H&V directions are 32×32.

6.8. Final image quality fine-tune
The final performance will be a combination of many factors–projector characteristics, projector setting, screen, ambient light and GeoBox setting.
Banding in overlap area under dark environment is caused by light leakage in the projector optic system. User needs to uplift the black level in none overlap area through [Offset] menu.
The projector may retain light leakage near the border (about 20 pixels) of the imager (micro display–DMD, LCOS or LCD). It is not possible to be fixed.
The factors affect final image quality Projector:
– To select projector display mode near 2.2 gamma setting will get the best result. – Ultra-short throw ratio projector is not recommended for edge blending, especially in
curved screen edge blending.
52

G802 User Guide

Document: G802-3

– When using ultra-short throw projectors, the reflection angle in overlap area will be very
big. Viewer will see different color banding when watch the image from different viewing angle especially the screen gain value is more than 1.0.
– To reserve enough overlap area–0.6m-1.2m in width or 20%-40% (based on single
projector native resolution) is recommended.
– To adjust image position of the projector and reduce keystone angle. – Increase Overlap region & reduce off axis angle – To reset projectors with the same settings. – To select Display Mode. Usually Standard, sRGB/Neutral will get better result. – To disable projector Brilliant color adjustment or Auto/Dynamic color adjustment. – Try different color settings in the projectors.
GeoBox settings:
– Edge Blending Gamma settings:
To execute [Transition] Gamma adjustment: start from one color in one channel first. After see some difference, then adjust other two colors. Try to do the same in the second channel.
[Gain] Gamma adjustment: if Transition Gamma adjustment still can’t fix the issue, try to adjust Gain Gamma. It will change gamma curve in each projector. Starting from one channel in one color first, then to do other two colors adjustment.
[Offset] gamma: When implement black level uplift, [Offset] gamma can change the brightness in overlap region borders if some brightness gap happens between overlap and non-overlap areas.
– [Shift] adjustment: If user sees dark line at the edge of the overlap region, to adjust few
pixels (1-10) at “­” value will change the color at the border.
– [Color] under [Blend] menu: If user sees background color difference when apply pure
white image, user can adjust [Color] to balance background color difference.
– Image Properties: To select Preset Mode to Neutral or Bluish may improve banding
condition but it will change whole image color temperature. Screen: To use lower gain value screen.
– Low gain value screen will improve banding effect in overlap region but will reduce total
image brightness.
– Short throw projectors with high gain screen may cause banding effect when watch
from different viewing angles due to different reflection intensity.
– User needs to carefully select the transparent screen for projection from rear when
using ultra-short throw ratio projector. Due to big reflection angle, the transparent screen should be test before installation.

53

G802 User Guide

Document: G802-3

7. Example for 3 projector edge blending procedures
A Curved Screen Edge Blending tutorial video is available in the website at https://youtu.be/pn6XQiNpdLc. Please check.
7.1. Get detailed edge blending information through GEOBOX Excel Spread Sheet
7.1.1. Assumption Required image size (screen size): 6.5m1.5m Watch distance: 2m (pixel pitch should be less than 2mm) Input signal resolution:
– Horizontal resolution: 6.5m / 2mm=3250. It means minimum input resolution shall be H >
3250. 3250 is not VESA standard resolution. Therefore, we select 3840 as horizontal resolution. The ideal vertical resolution is based on screen aspect ratio: 6.5/1.5=4.33:1. 3840/4.33=886. It means 3840886 is the resolution without image distortion.
– In actual application, user can select 3840886 from PC signal source. The media player
and other display playback devices may have no 3840886 output. User can select 3840800 (same as projector vertical resolution) or 38401080 (or 38402160). Once user set a full screen display in the complete system, user still can see no distortion image.
– User needs to prepare a content with 4.33:1 aspect ratio to avoid image distortion.
Number of projectors: 3 projectors at 3×1 horizontal position Projector resolution and lumens. 1280800 (native resolution), 3200 Lum. GeoBox output
resolution shall be the same as projector native resolution to get the best video quality. Overlap pixels and dimension. 8 grids=832= 256 pixels Projector throw ratio: 1.2-1.7 (based on projector spec)
7.1.2. Excel calculation Input the data in yellow column. User will get calculation result. Final image size for each projector: 2.500m1.563m We reserve 6cm image height for geometry alignment and after service. User can use geometry alignment to draw the vertical height to the required dimension 1.5m. Optimized content resolution: 3328*800 (This is the ideal resolution for the content and EDID). Installation distance: 3m-4.25m (based on throw ratio 1.2-1.7). The value in video wall Overlap setting:
– #1 Projector: RH edge: +197 – #2 Projector: LH edge=+98, RH edge=+98 – #3 Projector: LH edge: +197

54

G802 User Guide

Document: G802-3

The final luminance is 819 Lux. It will be enough for indoor environment.

7.2. Mark image location and install the projectors
After Excel Spread Sheet calculation, user can understand the final image position for each projector based on the image size for each projector and the overlap region dimension. Please mark image position by paper adhesive tape on the screen. The positions should include 4 corners of the image for each projector and horizontal center line of the screen. Laser level is an ideal tool for marking center line, horizontal and vertical image positions.
Please install the projector just enough to cover the required area with minimum keystone in both sides.
7.3. System connection
Only the input signal from HDMI-1/HDMI-3 input port can be looped out. Input signal can be connected to HDMI-1/HDMI-3 input port and looped out to next
processing module. If setup by IR remote controller, please install IR extender near screen for easy
access by remote controller. The maximum adjusting points is 9×5. User can setup GeoBox through Ethernet. Please use WebGui or Gwarp3 PC tool for
the setup. Gwarp3 can implement up to 17×17 adjusting points. Select input port and set GeoBox output resolution to be the same as projector native
resolution.
55

G802 User Guide

Document: G802-3

7.4. Projector settings
Please reset projector to default setting. Disable dynamic color adjustment. Disable Auto Keystone function. To select a Display Mode with 2.2 gamma curve will reduce the color difference in
overlap area. If necessary, please choose a Display Mode with the best result. Use projector internal color adjusting function to adjustment the color variation
among projectors before implement edge blending. Install projectors at a place with image size that can cover required image area and
with minimized keystone to get the best video quality.
7.5. GeoBox Settings
Reset GeoBox to default setting. Select input port. Select output resolution to be the same as projector native display resolution. Check input/output LED indicators and make sure to have correction system
connection.
56

G802 User Guide

Document: G802-3

Disable [Frame Sync] function to eliminate Source re-search in the projector while executing GeoBox system setup through [Options] [Setting] [Frame Sync] [Disable]. Please return to [Normal] setting after edge blending.
If setup via Ethernet, please connect GeoBox with Switch/Hub or WiFi router in LAN port.
7.6. Geometry alignment

Grid pattern Warp ([3×3], [5×3], [2×2] (4 corner

[9×5] alignment)

alignment)

Channel selection

User can install IR extender receiver near screen for easy GeoBox operation. IR receiver extender can be extended through audio cable.
Click channel selection key and [Pattern] key to show grid patterns in all projectors. Press [Pattern] key again will change grid color. To set different pattern colors in adjacent projectors will be more convenient for geometry alignment.
Please follow the sequence [2×2] [3×3] [5×3] [9×5] to do geometry alignment to ensure entire image will have uniform scaling factor.
Apply [2X2 Corner] geometry alignment and draw the corners to expected locations. It doesn’t matter to have some image inside the screen once it covers entire screen before 4 corner adjustment. [Warp] alignment will adjust the image position back to the required position.

57

G802 User Guide

Document: G802-3

If user doesn’t execute GEOBOX Excel Spread Sheet calculation, please use [2×2] alignment and try to let all projectors have similar image size with the overlap area having the same grid number.
Apply [3×3 Curved] geometry alignment to let 9 adjusting points be located at the required position including four corners, edge center points and center line position in each projector.
Please use [5X3] & [9×5] for further geometry alignment and fine-tune. Linearity Grid Line adjustment function is convenient for complete grid line movement.
After finish the alignment, user can use [2×2] for complete image position fine tune. If user executes [3×3] alignment again after [9×5] alignment, [9×5] grid position will be reset and only keep [3×3] grid point information.
In ideal condition, all grids in edge blending area between two adjacent projectors should be aligned together.
After the above processes, if the grid pattern in edge blending area still can’t stack together, user can reduce or increase overlapped grids to change the control point positions in adjacent projectors and get more accurate geometry alignment result.
[Gwarp3] PC tool can provide 17×17 grid point adjustment with quicker geometry alignment. After finish geometry alignment, all grids should be matched together.

58

G802 User Guide
7.7. Video Wall settings

Document: G802-3

[Overlap] [Video Wall] hotkey

Channel selection

Click [INFO] key to check if correct input and output timing is in the system. User needs to apply the same input/output timing as GEOBOX Excel Spread Sheet calculation.
Example for [Video wall] settings for 3 projectors horizontal edge blending with one G800: [Zoom]: set to H=3, V=1 in all channels. Each channel should be set separately. [Pan]: LH projector (1st): H=1, Center projector (2nd): H=2, RH projector (3rd): H=3. All projector Vertical PAN is the same: V=1. [Overlap]: select the correct edge and apply the value calculated from GEOBOX Excel Spread Sheet: LH projector: RH edge, Center projector: both RH/LH edges, RH projector: LH edge Below is overlap value calculated from GEOBOX Excel under below condition: Input: 3840800, Output: 1280800, Overlap pixels: 256, Projectors: 3 Horizontal Overlap value: Projector 1 RH edge= 197, Projector 2 RH edge= 98, LH edge= 98, Projector 3 LH edge=197 Vertical values in all projectors are set with the same “V=0″.

59

G802 User Guide

Document: G802-3

For dual projector edge blending, user can apply still image, select correct edges and adjust [Overlap] value simultaneously and let the image in edge blending area comes closer till without double image. Two projectors shall have the same value (same cropping range). The difference shall not be over 2 pixels.
If no Excel is available for overlap calculation, user can apply GEOBOX Video Wall test pattern on the screen, then adjust the complete pattern to let entire pattern match together by overlap adjustment.
If user still sees some blurred image in edge blending area, please increase or decrease [Overlap] value in [Video Wall] setting to improve video quality.
Please note that projector has Thermal Drift issue (position shift due to different temperature). The image position in power ON stage may be different from the position after 15-20 minutes when the position is stable. Don’t adjust image position during this period until it is stable.
7.8. [Edge Blend] setting
Select correct Edge for the edge blending: LH projector: RH edge, Center projector: RH & LH edge, RH projector: LH edge
RED and GREEN indicating lines will appear when increase edge blending pixels. The final overlap setting value will be the same as Overlap pixels (256) in this example case.
User needs to adjust the color indicating lines to match together (green to green, red to red) and will see a smooth image.
[Edge Blend] hotkey
60

G802 User Guide

Document: G802-3

7.9. Final Image quality fine-tune
If banding effect is visible in overlap area, please try below method:
GeoBox [Gamma]: Please try to adjust Gamma value in [Transition] & [Gain] menu and adjust
[Shift] value to ” – ” to do color uplift in the edge of overlap region.
Projector: please try to change projector settings – All projector should have the same setting. – To select color profile with gamma 2.2 will get the best result. – Check Display Mode: Usually Standard, sRGB modes will get better result. – Disable projector Brilliant color or Dynamic color adjustment.
The video quality in overlap region is related to many factors. Please see more details in other section related to [Final Image quality fine-tune] in this user guide.

61

G802 User Guide

Document: G802-3

8. Save/Load System Settings
After finishing system settings, user can save the setting via OSD menu through [Menu] [Options] [Setting] [Profile] [Save] [Index 1-5]. It will take effect for one channel only. User needs to save each channel separately.

User can save the settings through [Save] hotkey on remote controller. It will take effect for all channels at the same time.
[Save] function is also available in WebGui and Gwarp3. It will take effect for all channels. Please save all channels into the same Profile Index for easy Load back at the same time. Five different display settings can be saved to [Profile]. The data stored in Profile include EDID
setting, input source, output resolution, color settings and all user customized settings. User can [Load] the settings through below methods:
OSD menu: [Menu] [Options] [Setting] [Profile] [Load] [Index 1-5]. It will take effect for one channel only.
Remote controller [Profile] hotkey: Press [Profile] hotkey, then select number keys on the remote control (not through OSD direction keys) to [Load] user settings. It will Load the settings for all channels at the same time.
WebGui & Gwarp3: user can access [System] [Load] menu to recall the settings for all channels through Ethernet or USB (Gwarp3 only).
When user power off the system, G800 will save user setting without loss even the setting is not saved into Profile Index, unless someone to change it.
Under below conditions, the settings data inside Profile Index will be kept without missing: When system has been reset from OSD menu, it will take effect for one channel only and the Profile data will not be deleted. Remote controller [Reset] hotkey will take effect for one channel and Profile data will be kept without delete. When user update new Firmware, it will not affect Profile data. Only Reset from reset hole on back panel will erase Profile Data.
62

G802 User Guide Hotkeys for Profile [Save] and [Load]

Document: G802-3

Press [Save], then select number key to save settings. The setting will apply to all channels at the same time

Number keys (1-5) for Profile [Save] & [Load]

Press [Profile] hotkey, then select number keys (not through OSD direction keys) to [Load] user settings

9. Multiple unit applications
9.1. System connection in multiple unit edge blending

Connect input signal to G802 HDMI-1 and looped out to second processor HDMI input port. No special sequence is required.
63

G802 User Guide

Document: G802-3

Usually, loop out signal can connect up to 10 processing modules. The maximum number is related to signal resolution and HDMI cable quality. If more channels are required, please add one HDMI splitter at the front end. It will extend to double or triple numbers of processing channels.
In edge blending application, only HDMI-1 signals can be cascaded through internal HDMI splitter. If user wants to do edge blending with other input ports, please add video distributor at the front end and feeds the signal to all G802.
User can control G802 through Ethernet, USB or remote controller. IF GeoBox is installed in control room, Ethernet control through WiFi will be the most convenient.
Notebook, mobile phone and Pad can execute GeoBox setup through WiFi. User can set individual Box ID and IP address for easy independent control in each GeoBox. Select input port and set GeoBox output resolution to be the same as projector native resolution. User needs to apply a signal source while executing video wall [Overlap] value setting. Signal
source resolution should be the same as GEOBOX Excel Spread Sheet calculation. To apply 4K or higher signal resolution is recommended. After system setup, user can use any input resolution. Press [INFO] hotkey to check if the final in/out timings are the same as expected.

Usually, one 4k signal source can be applied for up to 20 meters screen through 2x G802 & 8x projectors. If bigger screen is required, user can apply multiple signal sources through multiple synchronized media player or multiple output display card to achieve higher system resolution.
64

G802 User Guide

Document: G802-3

9.2. Content overlap setting issue
If the system is larger than 20m, usually, multiple 4k signal source is required to get good enough video resolution. Below are some important points:
User needs to split the content into different sections and each section is played back by one PC or media player.
These PC or media player needs to be synchronized. GeoBox can crop the right overlap pixel inside one content for each projector but not for the pixel
between two independent contents. The Overlap content between two independent signal sources shall be handles through below
methods:
– To set Overlap image through PC display card. In this case, the overlap cropping issue in
this section will be handled by PC.
– To cut the content with same content in overlap section for edge blending. The pixel size
shall be larger than Overlap region and GeoBox can crop the right pixel for edge blending. User can use synchronized media player (such as BrightSign) or low-cost multiple output display card from PC.
– Some PC display card can set overlap pixel up to 25% of the output resolution among
the outputs. User can use display card similar to Matrox TripleHead 2 Go, ATI Display Group, NVidia SLI Surround or NVidia Mosaic mode.

65

G802 User Guide

Document: G802-3

9.3. Convenient Setting and PC tools in multiple unit application
Please see more details in [System settings: Box ID, RS232, Ethernet] section.
9.3.1. Setup by Remote Controller If multiple units are used, user can set different [Box ID] (#1 – #99) or IP address in each Box for individual control. For IR control, the [Box ID] number range is #1 – #9. When all G802 or IR extenders are installed together in the control range of single remote controller, user can do individual G802 control through below method.
– Press851all the box OSD will be locked except ID #1. The LED light will be
flashing in the locked unit and only ID #1 can be operated through OSD menu.
– Press853all the box OSD will be locked except ID #3. The LED light will be
flashing in the locked unit and only ID #3 can be operated.
– Press850all the box OSD will be unlocked and can be operated through remote
controller at the same time.
9.3.2. Setup by Ethernet User can connect all G802 in one Ethernet Router (WiFi Router or switch/hub) through LAN ports and set different Static IP address for each Box, then use WebGui virtual keys or Gwarp3 PC tool to control each G802 independently. Default IP address is 192.168.0.100. TCP Server port is 1266.

66

G802 User Guide

Document: G802-3

10. WebGui and Gwarp3 PC tool
User can connect all G802 in one Ethernet Router (WiFi Router or switch/hub) through LAN ports and set different Static IP address for each Box, then use WebGui virtual keys or Gwarp3 PC tool to control each G802 independently. Default IP address is 192.168.0.100. TCP Server port is 1266.
10.1. WebGui
WebGui is embedded inside G802. Once user connects G802 with PC through Ethernet, user can access WebGui and execute all operation similar to OSD menu through Virtual Keys and OSD Menu. No PC or appropriate software tool is required.
The connection can go through Ethernet router LAN port, WiFi Router or Cat 5/6 cable (some PC may need to use cross-over cable). User can set each G802 with different static IP address in the same domain, then open Google Chrome or Microsoft Explorer browser with IP address to access each unit of G802 for independent operation. There is no limitation in the number of G802 that can be controller at the same time.
If the system is connected through UPT cat 5/6 cable between PC and GeoBox, user needs to manually set TCP/IPv4 with the same network segment such as 192.168.0.105 with subnet Mask at 255.255.255.0 and connect through Chrome.
User can turn on/off the system through WebGui or Gwarp3 and see the status through power indicator.

67

G802 User Guide

Document: G802-3

10.2. Gwarp3 PC Tool
Gwarp3 is a PC tool executed through PC. Please download this tool from GEOBOX website. Once user opens Gwarp3 and connects with PC through Ethernet or USB, user can execute edge blending settings through PC keyboard and mouse. User can also backup system setting in PC and restore or copy to other units.
Firmware and MCU code update can be executed through Gwarp3. User can control multiple units at the same time through different IP address.
Please download Gwarp3 PC and User guide from GEOBOX
website at https://www.geoboxav.com/software-g80x/m80x

10.2.1. Important concept
Gwarp3 is a PC tool for convenient operation through USB or Ethernet connection. When GeoBox is connected with Gwarp3, GeoBox is controlled by Gwarp3 but not from GeoBox internal settings. Unless user save Gwarp3 setting into GeoBox, when user turns off GeoBox, the settings will get lost. There are two ways to save Gwarp3 settings into GeoBox: Through [Profile Save]–It will save all Gwarp3 settings into GeoBox with only one UserMap. Through [Save to Box]–it only saves Warp Data only without including other settings.
Different Gwarp3 version needs to match MCU code and FW version. When user apply new version Gwarp3 and see [MCU code is too old] message, user needs to update new FW & MCU code.
The menu for Geometry alignment in Gwarp3 is called [Warp Adjust]. It can only execute geometry alignment up to 17×17 control points.
Under 9×5 control point, the geometry alignment result in Gwarp3 will be executed to the Box in real time. It is the same result as OSD or remote controller operation. User can switch operation
68

G802 User Guide

Document: G802-3

between remote controller and Gwarp3 at any time. 17×17 geometry alignment can’t be executed in the Box in real time. User should execute [Save
to Box] process to save the final data into Box and can find the result under [UserMap] OSD menu. The data saved in Profile Index will save all user settings including UserMap. If the UserMap has no 17×17 data, user can recall Profile Index data and modify through OSD. When modify through OSD, user shouldn’t click [Warp] hotkey in the remote controller directly to open [Warp] menu but need to open [Anyplace] [9×5] to do further modification. Once clip [3×3], the grid pattern will only keep [3×3] data. If the data includes up to 17×17, user can modify UserMap data through Gwarp3. To select User Map # and click [Load Map Data], then click [Warp Adjust] [17×17] mode to execute further modification. User can also execute 2×2 corner [Finetune] under [Anyplace] [GWarp][Finetune] OSD menu with +_50 pixels position shift in H&V directions through remote controller. This is for position finetune in after service after installation. [Save Setting] to PC can only save “Current” setting data inside Gwarp3 to PC. It means Gwarp3 can only save the settings that is showed at that time. Multiple Profile Index data and User Map data which are stored in the Box can’t be stored into PC. The data saved in Gwarp3 through [Save Setting] to PC can be as backup or copied to another GeoBox through [Load Setting] process. After PC is connected with new box, user can open Gwarp3 and go through [Load Setting] [Load Map Data] [Warp Adjust] [17×17] mode to execute further modification or tag [System] [Profile Save] to save the settings into new box. If the warp data has no 17×17 data, user can use [9×5] to do geometry adjustment through remote controller or Gwarp3 directly without going through [Load Map Data] process.
10.2.2 keyboard hotkeys for GWarp3 operation
Please set PC language in English so that user can use Keyboard hotkeys to execute system operation. If not in English, some hotkey functions will be not functional. [M]: Change circularly Warp Adjust mode from [2×2] [3×3] [5×3] [9×5] [17×17] [Wall] [2×2] [3×3]… [CTRL + Arrow]: Select control point [Arrow]: adjust value (control point position), default is 8 pixels/step. [Shift + Arrow]: Geometry adjustment with 1 pixel/step [P]: Enable grid pattern with different color [CTRL + P]: turn OFF pattern to see OSD menu for the operation by remote controller [R]: Reset geometry alignment settings in current mode and channel. [U]: undo the last geometry alignment step.

69

G802 User Guide

Document: G802-3

11. Advanced applications and settings
11.1. Passive 3D application
11.1.1 System Configuration
GeoBox will decode 3D format from all kinds of 3D video sources, including Blue Ray DVD, STB, Media player, Game console and PC… 3D signal will be decoded by GeoBox into signals for Right/Left eyes. The signal needs to be displayed through two projectors. Each projector will display signal only for right eye or left eye. User needs to set a polarized filter in front of the projector and also wears polarized glasses. The glasses need to match the polarized filter in front of the projectors so that the right eye can only see the scene for right eye and the left eye can only see the scene for left eye. Silver 3D screen is also required to preserve the polarization of the light for 3D display. It is possible to use optic spectrum method from Infitec or Enciircle Inc. to allow 3D displayed on normal 2D screen.

11.1.2. System installation and setup
a. GeoBox should not be installed at side of the projector where the ventilation hot air comes out. b. Two projectors can be put side by side or top/bottom. Closer position will reduce geometry
adjustment range and reduce the loss of the image resolution and brightness. Please make sure hot ventilation air will not affect the other projectors. Isolated board between two projectors can be added if necessary.
70

G802 User Guide

Document: G802-3

c. Set higher output resolutions (such as FHD) from 3D signal source and connect to any input of GeoBox. GeoBox will decode and distribute the signals for two projectors.
d. Each GeoBox output is connected to one projector for right/left eye display. e. Install polarized filter at some distance from projector lens to avoid thermal damage (at least 5-10
cm depending on projector lumens). f. Setup the polarized filter and glasses so that right/left eye can only see the scene for one eye. g. Use geometry alignment function to align the images from two projectors completely matching
together. Please place the polarized filter in front of the projector before [4 Corner] adjustment because polarized filter will affect the direction of light beam from projectors. Some deviation is allowed for 3D display but will affect the performance in 2D display. A good alignment will give double brightness for the projection in 2D display. For a good double brightness application, two projectors should be placed as close as possible and the screen must be flat or smooth curve.
11.1.3. GeoBox 3D settings
4 sub-menu under [3D Properties] menu

11.1.4. Input Format] [Input Format] selection:
Select [Automatic] if the 3D signal is standard 3D formats from Blue Ray player or sources with 3D INFO inside the signal.
Select [Side By Side] or [Top-Bottom] based on user’s 3D input sources.

71

G802 User Guide

Document: G802-3

11.1.5. [Output Format]

To set [Right Eye Frame] for RH projector and [Left Eye Frame] for LH projector.
[Output Fromat] setting is based on the filter location. If RH optical filter is installed at LH projector, then user needs to set LH projector at [Right Eye Frame]. User can swap [Output Format] setting to fix wrong position installation in optical filters.

11.2. Active 3D application
User can support frame sequential 3D input signal and execute geometry alignment and edge blending for active 3D display system. Frame sequential 3D signal can be converted into 720p/XGA/WXGA 100Hz/120Hz or FHD 60Hz frame sequential 3D signal for DLPLink 3D Ready projectors. GeoBox can also apply geometry alignment for active 3D curved screen display. If user wants to implement active 3D edge blending, user can’t use color wheel synchronization system in DLP 3D Ready system and needs to find a method for the synchronization of multiple projectors because the color wheel in multiple projectors can’t be synchronized. The projector embedded with external synchronization signal function is one of the solutions to solve multiple projector synchronization issue.
Other 3D formats such as side by side or DVD frame packed can’t be converted into frame sequential 3D format for passive 3D display.
11.3. Multiple Wall Immersive display
User can use multiple projectors to execute Multiple Wall display with the images from different projectors. Below is the example for a display with 3 walls and one floor to build one immersive display. a. Assumption
3 walls display: W1=2m, W2=5m, W3=3m Signal source: 3840×1200, GeoBox output resolution: 1920×1200 b. Usually, 5000 Lum projector can cover 3-4 meters image width. Four projectors are required to cover entire screen.

72

G802 User Guide

Document: G802-3

W1=2.5m

W2=5m

W3=3m

c. The dimension of W1 is only 2.5m, it is possible using one projector to project onto W1 & W2. User needs to use [Corner Wall] or the geometry alignment. Due to big geometry alignment and off axle projection, the video quality will be lower. We suggest to meet the image edge at wall corner to get the best video quality.
d. In ideal condition, each projector should have the same projection size to get equal brightness. For 2.5m image height, the image width should be 4m (16:10 aspect ratio). W1: one projector is enough W2: require two projectors with edge blending to cover the space W3: one projector is enough Floor: 1-2 projectors is required. (If use one projector, the image size is 4.8mx3m, the brightness and resolution will be a little lower. The installation distance should be also considered. Bigger image requires bigger installation distance. To let all projectors with the same scaling factor to avoid image size difference among the walls. Total screen dimensions: 2.5+5+3=10.5m
Total image width: 3840 pixels Pixel density: 3840/10.5= 366 pixels/m Assign image resolution for each wall to get the same scaling factor.
– W1 (PJ1) =3662.5= 914 pixels (Projector #1) – W2 (PJ2 & PJ3) =3665= 1829 pixels (Projector #2 & #3) – W3 (PJ4) =384*3= 1097 pixels (Projector #4) – Based on the above data, if we express the image location by coordinate, W1 is from
0 to 914, W2 is from 914 to 2743 (914+1829), W3 is from 2743 to 3840. e. Video Wall settings:
User can set different Video Wall Zoom value for each projector separately. We assume to set Zoom at H=4, V=1 for all projectors.
73

G802 User Guide

Document: G802-3

W1: Zoom: H=4, V=1, Pan: H=1, V=1 Overlap: 3840/4=960, 914-960= -46 Right Edge = -46, Other Edge=0
W3: Zoom: H=4, V=1, Pan: H=3, V=1, Overlap: 3840/4=960, 1097-960= +137 Left Edge = +137, Other Edge=0
W2: The image captured for W2 is 1829. User needs to calculate Video Wall Overlap Pixel based on this resolution. If we want to get 2.5m image height, we need to have 1440 overlap pixels, the overlap value is 549 pixels.

Under this condition, the image cropped for PJ2 should be in the range from coordinate 914 to 2377.5 (914+1829/2+549). The image for PJ3 should be in the range from coordinate 1279.5(914+1829/2-549) to 2743 (914+1829=2743).
PJ2 Video wall setting: Zoom: H=4, V=1, Pan: H=2, V=1. The standard coordinate after Zoom setting will be from 960 (3840/4) to 1920 (9602), Overlap value will be: Left Edge: 960-914= 46, Right Edge: 2377.5-1920= 457.5 (actual 457 or 458)
PJ3 Video wall setting: Zoom: H=4, V=1, Pan: H=3, V=1. The standard coordinate after Zoom setting will be from 9602=1920 to 960*3=2880, Overlap value will be: Left Edge: 1920-1279.5= 640.5 (actual 640 or 641), Right Edge: 2743-2880= -137
After Zoom and Pan settings, user can also apply external Video wall test pattern and align the image together through Overlap adjustment. Once the pattern can match together, the Overlap settings should be correct. When apply external test pattern, user needs to continuously press [Pattern] key to see the test pattern.
After finishing video wall settings, user needs to set [Edge Blend] between PJ2 and PJ3 to finish complete system settings.
74

G802 User Guide

Document: G802-3

11.4. Portrait edge blending
When executing edge blending, the image will be stretched and the aspect ratio will be changed. In order to reduce aspect ratio change, user can execute portrait edge blending to increase image height. When execute image 90/270 degrees rotation, the input source resolution can be up to 4k/30Hz.
Original image at landscape

PJ1

PJ2

PJ3

· Projector at portrait position to increase image height
· Source image is rotated by GeoBox at 90° · Zoom: H=3, V=1 in all projectors · PAN settings are showed in each image. · Overlap settings: PJ1: Right Edge, PJ2:
Left Edge & Right Edge, PJ3: Left Edge

Some projectors are not suitable to be installed at portrait location. Laser projector has high contrast ratio, no limitation in installation angle and accurate color and gamma curve. It is the best choice for edge blending application.
G800 can rotate source image before edge blending. It will be more convenient for user to connect with all kinds of conventional signals without the need to rotate the image in advance.
When apply portrait edge blending, the GEOBOX Excel Spread Sheet calculation also needs to change the output resolution. If the projector is 1920×1200, then user needs to keyin Output Resolution (projector resolution) at 1200×1920.
The OSD menu will not follow rotated image. Video Wall setting direction will follow actual rotated image direction but not OSD direction.
All the function settings under [Anyplace] menu will follow OSD menu directions but not follow rotated image direction. The items include geometry alignment & edge blending.
Except for the directions, all the rest settings will be the same as normal display. Image rotation menu is under [Image Properties] 75

G802 User Guide

Document: G802-3

PS1. If using Fujifilm projectors with rotatable lens to project all-in-one image on Ceiling, wall and floor, the location setting (PAN) at 1st and 3rd projectors may be swapped. Please see the image after rotation and Left side projector PAN is H=1.
PS2. When apply portrait edge blending, the installation location of the projector will be near the middle height of the screen. If the projector has lens shift function, projector can be installed at higher location.
11.5. Flexible display
When edge blending is implemented, the image aspect ratio will be changed. If the content has the same aspect ratio as the screen, the system can be setup to show no
distortion image. In order to reserve flexibility for different user environments, GeoBox allows user to set different
display modes. Below is the example for 3 projector edge blending system.
– Case A: All-in-one: display one content across entire screen. – Case B: 2+1: two projectors edge blended and one independent content display. – Case C: 1+1+1: Each projector displays independent content. – Case D: display one 16:9 image
GeoBox setting for each case:
– Case A: it is normal edge blending setting. Save the setting to Profile Index 1. – Case B: To reset all settings, select the input sources for discrete display and implement
edge blending only on two projectors. Save the setting to Profile Index 2.
– Case C: To reset all settings, select the input sources for discrete display and implement
geometry alignment to separate the images among all projectors without overlap. Save the setting to Profile Index 3.
– Case D: To reset all settings, execute edge blending for two projectors only. Using
geometry alignment to draw the image with 16:9 aspect ratio.
Note 1. G800 two output channels from the same processing module will share the same input port. If user wants to display different contents in these two outputs, user shall select from below combinations: HDMI+VGA, HDMI+DP or DP+VGA
Note 2. please save the setting through Remote controller “SAVE” hotkey or PC tool so that all channels can be saved into the same Profile Index for easy recall. User can recall through remote controller, RS232 or Ethernet. No projector installation or setting change is required.

76

G802 User Guide

Document: G802-3

11.6. Discrete content displayed in each projector
User can configure to show independent content in each projector. Below are the guidelines: Signal source selection: only one HDMI input source can be selected as discrete display input
source in one processing module. User shall select from below combinations: HDMI+VGA, HDMI+DP or DP+VGAIt means one G802 can provide two HDMI signals and the rest shall be from VGA or DP. When execute discrete display, please reset [Video Wall] and Edge Blend] to default value. User need to use geometry alignment to let the images in projectors apart from each other. The Overlap region among adjacent projectors should not be too big. Otherwise, the final discrete image will have more aspect ratio change due to draw the image inward. If necessary, user can draw back top/bottom image by Video Wall [Overlap] function to let final image has the same aspect ratio as original. Save the final result into the same Profile Index in all processing modules for easy recall.
77

G802 User Guide

Document: G802-3

12. Miscellaneous settings
12.1. Helpful tips for edge blending
G800 can support interlaced signal source (i.e. 1080i). However, if user rotates or flips the image, there will be no 3D motion adaptive de-interlaced function. User may see some small flick image while the input is still image. We recommend applying progressive signal to avoid this kind of issue.
In the application with short throw ratio projector on curved screen, there will be big image distortion. User needs to apply big geometry alignment and degrade the video quality.
Image position drift will cause blurred image in overlapped region. For edge blending application, please select one projector with less Thermal drift. It can be judge through comparing image position shift between Power on and after 20 minutes running time.
Mark the final image position. Once the position shift in the future, it can be recovered through [2×2] corner adjustment via remote controller easily.
Native contrast ratio is important in edge blending. The higher contrast ratio will have less light leakage with less banding in overlapped region under dark environment.
Ultra-short throw projector is not suitable for edge blending due to big reflection angle and easy to cause

Read User Manual Online (PDF format)

Download This Manual (PDF format)

Download this manual  >>