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verified publisher icon NirAharon

the problem of Kalman Filter

Open EnzoLiang opened this issue 3 years ago • 2 comments

Hi @NirAharon , when I use Kalman Filter predict mean and covariance, I find the value of mean[1](center y) sometimes is negative. It seems to be unreasonable. Besides, the parameters of the set noise factors on the paper are applicabel to 30 FPS. How should I adjust it if i use it 25 FPS

EnzoLiang avatar Aug 16 '22 01:08 EnzoLiang

Hi @EnzoLiang

  1. The Kalman filter mean[0:1] (center x, center y) might be negative when the object is near the border of the image or leaving the image, is this the case?
  2. For 25 FPS the noise factors will approximately be the same, so no change needs to be made.

NirAharon avatar Aug 19 '22 09:08 NirAharon

Hi @NirAharon, I tried to test it with the default parameters in 25 fps, it seems to be normal. When I sample video with 5 fps and test with the default parameters, it seems to be abnormal. How to adjust the parameters ?

Hi @EnzoLiang

  1. The Kalman filter mean[0:1] (center x, center y) might be negative when the object is near the border of the image or leaving the image, is this the case?
  2. For 25 FPS the noise factors will approximately be the same, so no change needs to be made.

EnzoLiang avatar Aug 26 '22 02:08 EnzoLiang

Hi @EnzoLiang, sorry for the late response. Did you manage to adjust the parameters correctly?

NirAharon avatar Oct 14 '22 11:10 NirAharon