Hanwha Techwin WISENET Road AI LPR/ANPR Cameras User Guide

WISENET Road AI LPR/ANPR Cameras
User Guide

WISENET Road AI LPR/ANPR Cameras

PRE-INSTALLATION

1.1 Choosing a Location
The LPR (License Plate Recognition)/ ANPR (Automatic Number Plate Recognition) Technology running on this camera will provide you with the best results when following the recommended installation constraints below.

Recommended
30 degrees Maximum Vertical Angle Maximum Forward Distance depends on lens zoom, however, should not exceed 20 m / 65.6 ft considering the effective IR range (for PNO and PNV models).
Please consider using external IR for ranges above 20 m / 65.6 ft.
FORWARD DISTANCE TABLES
The orange dots on the tables below are recommended installation measurements.
[PNO/PNV-A9081RLP]

* Day and night conditions with built-in IR*
PNB-A9001LP parameters depend on lens & external IR.**

Recommended
30 degrees Maximum Horizontal AngleCamera in 4K mode can cover up to 3 road lanes. The FullHD mode can cover up to 2 lanes.
Normally, setting the recognition zone (see orange frame below) in the lower half of the camera view is sufficient and favors app performance.
Best results are achieved when single row number plate width has fit the criteria. Greater width may affect performance.

All the license Plates that are meeting the pixel criteria below will be recognized in the selected area.

• 130-300 pixels for regular EU plates
• 80-300 pixels for US plates without stacked symbols (small ones)
• 160-300 pixels for US plates with stacked symbols

INSTALLING AND POSITIONING THE CAMERA

2.1 Camera Installation
NOTE: Refer to PNO-A9081RLP, PNV-A9081RLP, or PNB-A9001LP installation guide and follow the installation instructions.
2.2 Adjust for Plate “Rotation” Angle
For best results, check the angle of your plate compared to the horizontal angle and rotate the camera to less than 5° as shown below (Recommended Angle(s).

2. 3 LPR(ANPR)/ MMCR Specification

| | |
---|---|---|---
LPR(ANPR) CAMERAS| PNV-A9081RLP| PNO-A9081RLP| PNB-A9001LP
Solution| Community Traffic Observation / Parking Application| City Traffic Observation| Highways
Speed Description| Moderate Speed| Low speed| Regular Speed| High Speed
Lane Coverage| Up to 2 lanes| Up to 2 lanes| Up to 2 lanes| Up to 2 lanes
Speed limit| Up to 70 kmh (45mph)| Up to 40 kmh (25mph)| Up to 100 kmh (65mph)| Up to 140 kmh (90mph)
Min. Forward Distance| 12m (38ft)| 10m (33ft)| 16m (52ft)| 27m (90ft)
Max. Forward Distance| 17m (55ft)| 16m (52ft)| 46m (150ft)| 46m (150ft)
Max. Horizontal Angle| 25°| 30°| 25°| 15°
Max. Vertical Angle| 25°| 30°| 25°| 15°
Horizontal Offset| Up to 5m (18ft)| Up to 7m (24ft)| Up to 7m (24ft)| Up to 4m (12ft)
Camera Height| Up to 5m (18ft)| Up to 7m (24ft)| Up to 7m (24ft)| Up to 7m (24ft)
Vehicle Recognition| Make: 70+ Makes
Model : 600+ models
Color: 10 colors| Make: 70+ Makes
Model : 600+ models
Color: 10 colors| Make: 70+ Makes
Model : 600+ models
Color: 10 colors| Make: 70+ Makes
Model : 600+ models
Color: 10 colors

CONFIGURING YOUR CAMERA

NOTE: There is no default username and password to access the camera setting,

1. Please make your own username and password at the first instance when you access the camera settings.
2. Make sure to set the correct date and time for the camera before going into any additional settings.

3.1 Field of View
The below steps you will perform on the Wisenet camera configuration webpage

1. Configure the camera so the left and right are correct, not mirrored.
2. Set camera zoom to capture license plate
3. Adjust the camera view angle so the plate passes through the middle of the image.

3. 2 Configure Initial Camera Settings
For proper operations, please, check and set the properly:

• Camera Date Time ( page 9)
• IP settings ( page 10)
• SD card storage ( page 12)
• Camera exposure and focus ( pages 13~14)

SSDR, WDR, DIS, Defog, AGC and anti-flickering features are good for the human eye but affect computer vision performance therefore setting these to the least possible effect or turning them off is strongly advised.

[Date and Time]

Choose A Timezone and set Use daylight saving time as appropriate.
Set B date and time or opt to synchronize with your PC or NTP server.
NOTE: Wisenet Road AI app relies on these settings and if these are not set properly you may not see events in the Wisenet Road AI app and events delivered to the outer systems may not contain proper timestamps.

[IP, DNS, Ports]

Proper IP, DNS, and ports setting are important for:

• NVR and other integrations
• outside LAN access if required

NOTE: Reboot the camera whenever the IP address gets changed.

[Go to App]
Please go to App in the camera open platform section.

To run the Wisenet RoadAI app, select the Open platform menu and click the A Go App button in the Application name field.

[microSD card]
Your camera is supplied with a micro SD card.

SD-card is managed by the Wisenet RoadAI application and no user interaction is needed.
Please check the B SD-Card status in the A ABOUT section of the Wisenet RoadAI app.
Change the micro SD card if you see an Error status

[Exposure adjustments]
Use the recommended settings from the Wisenet Road AI application in most cases. But if you need to manually adjust here are the most common settings that affect LPR performance.![Hanwha Techwin WISENET Road AI LPR ANPR Cameras

• Fig 14](https://manuals.plus/wp-content/uploads/2022/10/Hanwha-Techwin- WISENET-Road-AI-LPR-ANPR-Cameras-Fig-14.png)

A Sensor: 25-30 fps
B SSDR: Off
C White balance: AT W
D Backlight: Off
(try other backlight options only if the camera gets blinded by headlights in night)
E Exposure:

• minimum shutter speed: 1/300
• maximum shutter speed: 1/700
• preferred shutter speed: 1/500
• Anti-flicker: Off
• SSNR: Default
• AGC: Low

F Day/Night:

• Mode: Auto

G IR: manual
H Other settings: Default

[Exposure adjustments-Automatic Gain Control]

| Automatic Gain Control can improve overall scene visibility notably. However, even at low settings, AGC produces noise that can ruin license plate images, also lighter areas tend to bleach out.
See illustrations to the left.
---|---
| Start with turning AGC off. See the illustration to the left. Set AGC to low to improve plate visibility unless only other methods are helpful.
Adjust zoom so that the real plate pixel width is at least 130px.
Consider adjusting the recognition zone so it is closer to the center of the frame to avoid the IR vignette effect.
NOTE: Do not use WDR as it decreases the shutter speed and may blur the vehicles.

3.3 Simple Focus on Plate Read Area
A unique feature of this camera allows you to select the plate area and hit a button to perform a “Simple Focus” on this plate area.

1. From the Video & Audio menu, select Focus setup.
2. Click and drag to draw an area of focus where the license plate is displayed.
3. Click the Simple Focus button to initiate a focus operation on the user-specified area.

NOTE:
The focus setting of PNB-A9001LP is related to the lens type and manual focus is activated when using a manual varifocal lens.
The area indicated is not stored. If you need to perform a new Simple Focus, please draw a new area on-screen.
Set the focus to have plates in the proper pixel size.

• 130-300 pixels for regular EU plates
• 80-300 pixels for US plates without stacked symbols (small ones)
• 160-300 pixels for US plates with stacked symbols

3. 4 To measure the pixel width of the license/number plate

1. Spread or move license/number plate (cars) across the scene (see illustration on the left below) and take snapshots using the web viewer capturing feature (Live → Capture);
2. Use the Plate Grid tool in the Settings tab of WisenetRoadAI and the Freeze Frame feature to check whether the plate fits the allowed range.
3. You can add an image from the Wisenet Road AI; → Settings → Freeze frame to show the actual settings.

3. 5 Observing PROPER Installation
SCENE REQUIREMENTS:

The license/number plate is
more than 130px in width| The license/number plate is readable| The vertical angle is less than 30°| The tilt angle is less than 5°| The horizontal angle is less than 30°

• good proportion to the frame width
• well lit
• sufficient contrast
• acceptable tilt angle| • good proportion to the frame width
• perfect IR power
• sufficient contrast
• critical yet acceptable tilt angle

POSSIBLE IR RESTRICTIONS:

The license/number plate is quite close to the frame boundary.
You may notice a vignette effect.| The license/number plate is closer to the center of the frame.
The plate is lit much better.

Pay special attention to the IR vignette effect (see illustration on the left) when setting up the recognition zone. The closer to the center the more even lighting is.
Also in this particular case real pixel width of the license/number plate is critically small.
The Automatic Gain Control effect will be illustrated in the camera exposure settings section.

3. 6 Examples of IMPROPER Installation

Focus and Shutter faults

The depth of field is insufficient to cover foreground license plates.
Adjust the lens settings.| Improper focus settings.
Adjust the lens.| Blurry image due to long exposure.
Fix the shutter speed to obtain a sharper picture.

Exposure faults

Too much light. Either adjust the iris or shutter speed.
Night time: dim the IR or set AGC to Low.

Insufficient light. Adjust exposure settings or provide additional lighting.

For more information visit us at:Hanwha-Security.com

Head Office
6, Pangyo-ro 319beon-gil, Bundang-gu, Seongnam-si,
Gyeonggi-do, 463-400 Rep. of KOREA
Tel : +82.70.7147.8753
Fax : +82.31.8018.3740
http://hanwha-security.com
© 2021 Hanwha Techwin Co., Ltd. All rights reserved.
DESIGN AND SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE
Under no circumstances, this document shall be reproduced, distributed, or changed, partially or wholly, without formal authorization of Hanwha Techwin Co., Ltd.
* Wisenet is the proprietary brand of Hanwha Techwin, formerly known as Samsung Techwin.

Documents / Resources

| Hanwha Techwin WISENET Road AI LPR/ANPR Cameras [pdf] User Guide
WISENET Road AI LPR ANPR Cameras, WISENET Road AI LPR Cameras, WISENET Road AI ANPR Cameras, Cameras, Road AI Cameras, WISENET Cameras
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References

• Hanwha Vision - Global Vision Solution Provider

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