dji Thermal Analysis Tool 3 User Guide
- June 4, 2024
- DJi
Table of Contents
Thermal Analysis Tool 3
User Guide
Introduction
The DJI Thermal Analysis Tool 3 can be used to analyze and process thermal
images. By identifying the temperature information of critical areas of the
target, the software can be used to analyze objects across many industrial
applications. Major incidents can be prevented or addressed quickly by using
the software to detect and pinpoint temperature abnormalities in equipment in
routine inspections.
Operating System Requirements
DJI Thermal Analysis Tool 3 can only be run on 64-bit operating systems.
Recommended operating systems include Windows 7, Windows 8, Windows 10, and
later.
Supported Devices
DJI Mavic 3T, Matrice 30T, Zenmuse H20N, Zenmuse H20T, Zenmuse XT S, Mavic 2
Enterprise Advanced.
Usage
Home Screen
-
Add Folder
Click Add Folder to import all the thermal images from the local directory to the software.
Only the R-JPEG thermal images taken by the supported devices mentioned above can be analyzed by this software. -
My Folders
Displays the added folders. The tree-structured display is supported.
• Left-click a folder, and the Image Display Area will display all the JPG images in the folder.
• Right-click a folder in the root directory to Delete, Refresh, or Open Folder.
Select Delete to delete a folder from the software, which has no effect on the local folder. -
Date
Displays the imported images by date (year-month-day). Filter out the images taken on certain dates easily. -
Image Display Area
Displays the imported images.
• Left-click a thermal image to view its information in the Image Information Display Area on the right.
• Double-click a thermal image to open and analyze it in the Thermal Analysis Screen.
• Choose to organize images by date or name, search the image by name, and view the total number of JPG images at the bottom of the screen. -
Image Information Display Area
Left-click a thermal image to view the information related to the image in this area. This contains the preview image, file name, shooting time, temperature range, parameter settings, image information, and remarks. Use the mouse wheel to scroll up and down to view all the information.
On the home screen, the information is for viewing only. and cannot be edited. -
Library
Left-click to return to the home screen. -
Report
Export the measurement data and other related information of a thermal image into a PDF or DOC, or export the processed image only. -
Settings
Language
Supported languages: Simplified Chinese and English.
Unit
Supported temperature units: Celsius (° C), Fahrenheit (° F), and Kelvin (K).
Report
Customize the logo and header for the report. -
About
Shows the current software version. Users can also find the user guide for the software here.
Thermal Analysis Screen
Double-click a thermal image in the Image Display Area to open and analyze the
image in the Thermal Analysis Screen.
The Thermal Analysis Screen contains the Toolbar, Image Display Area, Topbar,
Chroma Bar, Information Display Area, and Action Bar.
Toolbar
The toolbar on the left contains the following tools:
Select: Once in the Thermal Analysis Screen, the Select tool is enabled by
default.
Spot Temperature: Click the icon, and then left-click the point that needs
to be measured in the image and the temperature of that point will be shown.
Drag the point to change the location of the measurement. Right-click the
point to delete the point, select the font size, or where show the
annotations.
Rectangle Temperature: Click the icon, and then left-click and drag to
create a rectangular measurement area. The highest, lowest, and average
temperatures of the rectangular area will be shown on the screen. Left-click
the rectangle to change its size and location. Right-click the rectangle to
delete the rectangle, select the font size, or where to show the annotations.
Circle Temperature: Click the icon, and then left-click and drag to create
a circular measurement area. The highest, lowest, and average temperatures of
the circular area will be shown on the screen. Left-click the circle to change
the size and location of the circle. Right-click the circle to delete the
circle, select the font size, or select where to show the annotations.
/ Line Temperature: Click the icon, and then left-click and drag to create
a measurement line. The highest, lowest, and average temperatures of the line
will be shown on the screen. Left-click the line to change its length and
location. Right-click the line to delete the line, select the font size, or
where show the annotations.
Palette: Click the icon to select the palette to show the thermal image in
different pseudo colors.
Resize: Click the icon to show the thermal image in its original size or
to fit the window.
Palette Color Description
The supported devices offer a variety of palette options. Distinct colors are
used to show temperature differences in the thermal image, which are related
to grayscale intensity. The temperature range of the image is mapped to 256
colors and displayed in an 8-bit JPEG image. The following table shows all
palette options.
| Palette | Description |
|---|---|
| White Hot | The most commonly used pseudo color uses white for high |
temperatures and black for low temperatures, which is a natural
association for people.
Fulgurite| Dark red represents low temperatures and white represents high
temperatures. The warm tone of this palette aligns with people’s
association with hot temperatures.
Iron Red| This palette displays nuanced differences in heat signatures,
quickly displaying anomalies and human bodies. Hotter objects appear as light
warm colors and colder objects appear as dark cool colors.
Hot Iron| Red represents high temperatures, and cool colors represent low
temperatures. It is able to identify hot targets quickly while showing the
details of cool targets.
Medical| This palette shows nuanced differences in temperatures and is
therefore ideal for scenarios with small temperature changes. In environments
with low contrast, it is still able to detect objects and slight temperature
changes. It is mainly used in the medical field for human body temperatures.
Arctic| Uses the same palette as Medical, except switching the purple for a
cool blue to better reflect temperature changes.
Rainbow 1| Similar to Medical, it reduces the warm color ratio and increases
the cold color ratio for high-temperature targets to better show the details
of cool targets.
Rainbow 2| The color transition is reduced, and the warm and cold colors are
moderately proportioned, which can show the details of high and low-
temperature targets at the same time.
Tint| Uses black and white for low temperatures and bright red for high
temperatures, and it is able to detect high-temperature targets quickly.
Mainly used for high-contrast environments, ideal for quickly and accurately
identifying high-temperature targets at night.
Black Hot| The opposite of White Hot uses black for warmer objects and white
for cooler objects. The heat distribution of high-temperature targets can be
better observed when outdoors.
Different palettes applied to the same example image are shown below.
Image Display Area
Displays the currently analyzed image and its temperature measurements.
Topbar
Displays the file name and the shooting time for the thermal image.
Chroma Bar
Displays the adaptive temperature range of the thermal image with the selected
parameter settings. Drag the two ends of the chroma bar to adjust the color
scale of the pseudo color to highlight objects in a specific temperature
range.
Information Bar
The information bar contains the preview image, temperature measurements,
parameter settings, image information, annotations, and remarks.
-
Preview
Preview the image. -
Measurements
Displays all the measurements made on the current image. -
Parameters
Distance: The distance to the target. An infrared thermal imager generates thermal images by receiving infrared radiation from objects. The farther away the object, the more the radiation attenuates. The camera’s default calibration distance is generally fixed during production. This is the distance at which temperature measurements are the most accurate. Being too close or too far will result in bigger measurement errors.
Relative Humidity: the relative humidity of the environment. Please configure this parameter based on the actual environmental conditions. The default value 70 means that the relative humidity is 70%, and the value range is [20~100]. Humidity configurations could affect the measurement result, but the effect is limited.
Emissivity: how strongly the target surface is emitting energy as thermal radiation. Refer to the Emissivity of Common Materials Table to configure, since the target surface may be corroded or oxidized, the actual emissivity value may differ from the reference value. Emissivity configurations could significantly impact the measurement result.
Reflected Temperature: the surface of the target that is measured could reflect the energy radiated by the surrounding objects. This reflected energy could be picked up by the camera along with the radiation, which could cause an error in the temperature reading. If there are no objects with extremely high or low temperatures nearby, set this parameter as the ambient temperature. Reflected temperature configurations could affect the measurement result, and the bigger the difference between the reading and the ambient temperature, the bigger the impact.
Press the Enter key or click anywhere outside the input field to finish setting the parameters.
If the input value is beyond the range, the software will input the threshold value instead. -
Annotations
Input annotations in key-value pairs. -
Remarks
Input remarks.
Action Bar
The action bar contains the image switch arrows, and the Cancel, Export, and
Save buttons.
- Image Switch: Displays the total number of the R-JPEG images in the selected folder and which one is being shown. Click the arrows to switch images.
- Cancel: Cancel all the operations for the selected image.
- Export: Click Export to go to the Report screen. Click Export PDF or Export DOC to export a PDF or DOC report for the selected thermal image, which contains the measurements, parameters settings, image information, annotations, and remarks. Users can also customize the logo and header for the report. Click Export Image to export a JPG image that contains measurements.
- Save: Save data such as spots and areas of temperature measurement, or specific palette settings to the R-JPEG images. This information is only visible when using the DJI Thermal Analysis Tool 3. This data cannot be seen when viewing these images in another software.
Saving an image will overwrite the original image, please make a backup if needed.
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References
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