Object Detection to Code Generation:

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.

Best

Answer 1

[Sai Pavan]

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!

[Tewodros Mamo]

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,