Jetson-inference

user163861 · July 19, 2022, 5:11am

Can I access to objects bounding box coordination which tensorrt engine gives to nvinfer. I think only getting bb coordination is possible and setting them manually (or changing some of objects location which trt gives) is impossible. sometimes I need to ignore some objects location tensorrt gives their location to nvinfer. How can I do that?
in our application inference is done for detection no classifiaction.

AastaLLL · July 19, 2022, 7:56am

Hi,

Please check the source below:
You can filter or modify the bounding box before output.

github.com

dusty-nv/jetson-inference/blob/master/c/detectNet.cpp#L762


      
          #ifdef DEBUG_CLUSTERING	

          	LogDebug(LOG_TRT "input width %u height %u\n", GetInputWidth(), GetInputHeight());

          	LogDebug(LOG_TRT "cells x %i  y %i\n", ow, oh);

          	LogDebug(LOG_TRT "cell width %f  height %f\n", cell_width, cell_height);

          	LogDebug(LOG_TRT "scale x %f  y %f\n", scale_x, scale_y);

          #endif

          

          	// extract and cluster the raw bounding boxes that meet the coverage threshold

          	int numDetections = 0;

          

          	for( uint32_t z=0; z < cls; z++ )	// z = current object class

          	{

          		for( uint32_t y=0; y < oh; y++ )

          		{

          			for( uint32_t x=0; x < ow; x++)

          			{

          				const float coverage = net_cvg[z * owh + y * ow + x];

          				

          				if( coverage < mConfidenceThreshold )

          					continue;

Thanks.

user163861 · July 19, 2022, 8:07am

Hi AastaLLL
I don’t find any function to process objects in nvinfer for primary(detection) mode. there is a function with name gst_nvinfer_process_objects which is called only in secondary mode.
Can you show me which function should I change?

user163861 · July 19, 2022, 8:07am

Hi AastaLLL
I don’t find any function to process objects in nvinfer for primary(detection) mode. there is a function with name gst_nvinfer_process_objects which is called only in secondary mode.
Can you show me which function should I change?

user163861 · July 19, 2022, 8:33am

I found it . It is attach_metadata_detector function.

AastaLLL · July 25, 2022, 3:56am

Hi,

Is your issue fixed after updating the function?

Thanks.

user163861 · July 25, 2022, 4:22am

yes.It fixed.
Ty

system · August 17, 2022, 3:12am

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