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Object Detection to Code Generation:

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Tewodros Mamo
Tewodros Mamo on 15 May 2024
Commented: Tewodros Mamo on 29 May 2024
Hello,
Is Train ACF object detector compatible with code generation? I am seeing some difficulty compiling the detector to download it to a target for a real time application. Any insight would be greatly appreciated. There is a limitted info in help doc but it is only for object detection from an image, even then, the example does not deep dive :)
Thank you.
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Answers (1)

Sai Pavan
Sai Pavan on 27 May 2024
Hello,
I understand that you want to know whether the Aggregate Channel Features (ACF) object detector supports code generation so that it can be used for a real-time application on a target. We can train an object detector with the "trainACFObjectDetector" function and use the trained object detector returned as an object for target-specific applications.
The "acfObjectDetector" object indeed has code generation support as mentioned here: https://www.mathworks.com/help/vision/ref/acfobjectdetector.html#:~:text=C/C%2B%2B%20Code%20Generation
Here is the workflow to use the code generation ability of this function:
  • Convert the trained detector object into a structure using the "toStruct" function. Please refer to the below documentation to learn more about "toStruct" function: https://www.mathworks.com/help/vision/ref/acfobjectdetector.tostruct.html
  • Save the structure as MAT file.
  • Generate C-MEX code that you can run in the MATLAB environment using MATLAB Coder.
  • Use the generated C-MEX file to detect objects in a test image.
Please refer to the following example that demonstrates the code generation ability of "acfObjectDetector": https://www.mathworks.com/help/vision/ug/example-ObjectDetectionFromImages.html
Note: You need to have access to MATLAB Coder product to use the code generation capabilities and to generate the C-MEX files.
Hope it helps!
  1 Comment
Tewodros Mamo
Tewodros Mamo on 29 May 2024
Hello Sai,
First of, thank you for your response and the links. However, my application will eventually be integrated to a third party simulink like blocks. I was wondering if a simpler representation of this structures is possible to make this a block or a function that works in simulink or make a matlab function that would then be used in simulink. i.e, A mattrix to insure platform indepenence and portability. like you would represent an adge detector using a 3x3 matrix.
Thank you.
Regards,

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