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TDA4VM: Scalar Node output is completely green

Part Number: TDA4VM


Dear Sir,

I am working on a pipeline for a segmentation model with ti-processor-sdk-rtos-j721e-evm-07_01_00_11.

My Final pipeline

Capture - > Custom Color Conversion ( YUYV to NV12) -> Scalar -> TIDL -> Post-proc -> Mosaic -> Display

My Current Development Pipeline

Capture - > Custom Color Conversion ( YUYV to NV12) -> Scalar 

Graph for your reference

I have verified my capture and color conversion output after dumping them and it is correct.

When I dump the Scalar output it is completely Green as shown below:

I am using scalar source code from the app_tidl_cam application.

Could you please let me know the possible reason for the same, where I am going wrong?

I need two outputs from the scalar node one for preprocessing and another for postprocessing for segmentation.

One Experiment:

Just to confirm if the custom kernel buffer was properly mapped, I changed the pipeline

Capture->Color Conversion-> Pre-processing

I commented the scalar node and provided the pre-processing node with the direct output of the color conversion.

As pre-processing size expectation is 768x384 and the output from the color conversion node is camera resolution 1280 x 944 so it has cropped the image for converting it from NV12 to RGB Planar.

So this confirms that the color conversion kernel output buffer is properly mapped.

Thanks and Regards,

Vyom Mishra