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esdolo / ImmortalTracker

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Disadvantages of simply increase MaxAge? #3

Closed HanGuangXin closed 2 years ago

HanGuangXin commented 2 years ago

Hi, I'm interested in your work, but I have some questions I want to discuss with you.

As oc-sort said, the noise of kalman filter will increase with t^2 as long as there is no observations in update step, which makes the prediction of kalman filter not reliable anymore. So in my experiments in MOT17 dataset, simply increase MaxAge of lost trajectories will cause more wrong matches.

What do you think of this question? Looking forward to your reply!

Lzc6996 commented 2 years ago

@HanGuangXin Actually, motion prediction in 3D space is so much easier than in pixel space, that may be the key difference.

HanGuangXin commented 2 years ago

I see. Thanks a lot for your time!