Get mouse Position and Mouse Clicks with Jetson-utils

jagdpantherx · July 8, 2023, 3:55pm

Does jetson-utils has a function to register mouse clicks?

I also realized jetson.utils is depreciated, I used to draw shapes using jetson.utils but same for mat did not work with jetson-utils.

dusty_nv · July 9, 2023, 1:57pm

Hi @jagdpantherx, the underlying C++ API has functions for user input events like mouse position, clicks, and keyboard state:

github.com

dusty-nv/jetson-utils/blob/f0bff5c502f9ac6b10aa2912f1324797df94bc2d/display/glDisplay.h#L371


      
          	 * Remove an event message handler from being called by ProcessEvents()

          	 * RemoveEventHandler() will search for previously registered event

          	 * handlers that have the same function pointer and/or user pointer,

          	 * and remove them for being called again in the future.

          

          	 */

          	void RemoveEventHandler( glEventHandler callback, void* user=NULL );

          

          	///@}

          

          	//////////////////////////////////////////////////////////////////////////////////

          	/// @name Mouse + Keyboard State

          	//////////////////////////////////////////////////////////////////////////////////

          

          	///@{

          

          	/**

          	 * Get the mouse position.

          	 */

          	inline const int* GetMousePosition() const			{ return mMousePos; }

If you need it from Python, you could add Python bindings for it or use another GUI toolkit from Python.

The Python module name changed from jetson.utils to jetson_utils, but jetson.utils should still work and all functionality should otherwise be the same between the two.

jagdpantherx · July 9, 2023, 6:09pm

Thank you but I am using python, is there a smilar function on python?

I had a tracking camera working with nano and trying to improve it with the orin nano. I really like the tracker function but when I enable the tracking function I see the parameters being printed on the terminal. Is there anyway to disable them? I want some other results to be printed but cant do it when tracking is enabled.

dusty_nv · July 10, 2023, 1:33am

Sorry, I don’t have Python bindings written for every C++ function in jetson_utils module.

Can you try running it with --log-level=info ? Otherwise, you can comment out the printing of the tracking status in this function:

github.com

dusty-nv/jetson-inference/blob/a444f0c987e5584ad21616737fe543cf7fb794d9/c/tracking/objectTrackerIOU.cpp#L104


      
          			maxIOU = IOU;

          			maxDetection = n;

          		}

          	}

          	

          	return maxDetection;

          }

          		

          

          // Process

          int objectTrackerIOU::Process( void* input, uint32_t width, uint32_t height, imageFormat format, detectNet::Detection* detections, int numDetections )

          {

          	if( !mEnabled )

          		return numDetections;

          	

          	// update active tracks

          	for( int n=0; n < mTracks.size(); n++ )

          	{

          		const int bestMatch = findBestIOU(mTracks[n], detections, numDetections, mOverlapThreshold);

          		

          		if( bestMatch >= 0 )

jagdpantherx · July 10, 2023, 12:30pm

I believe this is for C how can I do the same for python to edit my own code.

dusty_nv · July 10, 2023, 2:44pm

This is a command-line argument that you can run with either the C++ or Python applications that use jetson-inference/jetson-utils. Or if you prefer to set it via the Python API in your own code:

from jetson_utils import Log
Log.SetLevel('info')

system · August 1, 2023, 8:48am

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