How to change properties of pointer tracker without re-initializing tracking?

I am working on pointer tracker, I know I can set the properties of tracker initilay by using :

tracker = vision.PointTracker('NumPyramidLevels',3,'MaxBidirectionalError', 2, 'MaxIterations',30,'BlockSize',[5 5]);
initialize(tracker, points.Location, objectFrame);

and then by using step method the tracking is working fine.

my question how to make these properties dynamic during the tracker is working, I used same method inside the while statment as following:

while ~isDone(videoFileReader)
    frame = step(videoFileReader);
    [points, validity,scores] = step(tracker, frame);
tracker = vision.PointTracker('NumPyramidLevels',3,'MaxBidirectionalError', 2, 'MaxIterations',30,'BlockSize',[5 5]);
initialize(tracker, points, objectFrame);
end

but the problem here that the tracker is initialized again! but I need to continue on the prevouis fram state without initialize the tracking again.

Answer 1

[Dima Lisin]

Hi Hana,

The properties of vision.PointTracker are non-tunable, which means you cannot change them after you call the step method for the first time. Can you please tell me why you would want to change them dynamically?

[hana]

Okay, Thanks you for this information