changing the TrackLogicState value in tracking with trackerGNN and making the tracker use the custom values in each time step.

Hello, I am using SORT example for MOT (https://www.mathworks.com/help/fusion/ug/implement-simple-online-and-realtime-tracking.html). I want to put a condition on tracker that if condition A exist, the most recent update in tracks.TrackLogicState changes to 1 and the tracker also should use this changed history in next time step. I think because of lomitations of tracker object I can not do that. Any ideas?

Answer 1

[Manish]

Hi alex,

I understand that you want to update the tracker based on condition A ,If condition A exists, update 'tracks.TrackLogicState'to 1, and use this change in the next time step.

You can achive this by iterating through the confirmed tracks and changing the 'TrackLogicState' to 1 and update the tracks.

Here is the code sample:

tracker = trackerGNN('TrackLogic', 'History');
for t = 1:numTimeSteps
    %detections = getDetections(t);
    confirmedTracks = updateTracks(tracker, detections, t);
    % Apply custom logic condition A
    for i = 1:numel(confirmedTracks)
        if conditionA(confirmedTracks(i))
            % Modify TrackLogicState based on condition A
            confirmedTracks(i).TrackLogicState = 1;
        end
    end
    
    % Store or use modified tracks for the next time step
    customTracks = confirmedTracks; % or any other structure you need
end

Refer the links below for better understanding:

https://www.mathworks.com/help/fusion/ref/trackergnn-system-object.html

hope it helps!

[alex]

thank you very much