Detectnet run external python script if person detect

tmrngo2012 · November 4, 2020, 11:12pm

Is there way to make detectnet open python script(turnonlight.py) when person is detect.

detectnet --model=models/person/ssd-mobilenet.onnx --labels=models/person/labels.txt --input-blob=input_0 --output-cvg=scores --output-bbox=boxes rtsp://192.168.2.2/test

AastaLLL · November 5, 2020, 2:49am

Hi,

YES. You can add a system call to launch python script when the numDetections > 0 below:

github.com

dusty-nv/jetson-inference/blob/master/c/detectNet.cpp#L885


      
          				detections[numDetections].Right      = x2;

          				detections[numDetections].Bottom	  = y2;

          

          				numDetections += clusterDetections(detections, numDetections);

          			}

          		}

          	}

          	

          	return numDetections;

          }

          	

          	

          // clusterDetections

          int detectNet::clusterDetections( Detection* detections, int n )

          {

          	if( n == 0 )

          		return 1;

          

          	// test each detection to see if it intersects

          	for( int m=0; m < n; m++ )

          	{

Thanks.

dusty_nv · November 5, 2020, 5:15pm

You might also just want to modify detectnet.py and integrate your turnonlight.py code into it. That way your whole application can be in Python.

tmrngo2012 · November 7, 2020, 12:39am

That’s great idea but my detectnet.py doesn’t work with rtsp.
with c…<detectnet --input-codec=h264 “rtsp://192.168.100.100/cam/realmonitor?channel=1&subtype=1”> I am able to see the video window…but with <./detectnet.py --input-codec=h264 “rtsp://192.168.100.100/cam/realmonitor?channel=1&subtype=1”> I am not able to see the video window.

dusty_nv · November 9, 2020, 5:31pm

Hmm interesting, what error are you getting?

Can you try changing detectnet.py so it creates the videoOutput interface first? Like this:

output = jetson.utils.videoOutput(opt.output_URI, argv=sys.argv+is_headless)
input = jetson.utils.videoSource(opt.input_URI, argv=sys.argv)

If you edit jetson-inference/python/examples/detectNet.py, then re-run these commands so that the updated script is copied to the correct install locations:

# after editing jetson-inference/python/examples/detectNet.py
$ cd jetson-inference/build
$ cmake ../
$ make
$ sudo make install