empty H matrix

[offirk]

Hi,
when I run './data/shaky-5.avi', i get the following error:
File "/home/ubuntu/Video_Stabilization/Mesh-Flow-Video-Stabilization/src/MeshFlow.py", line 21, in point_transform
a = H[0,0]*pt[0] + H[0,1]*pt[1] + H[0,2]
TypeError: 'NoneType' object is not subscriptable
it seems that openCV doesn't always manage to find a homography matrix, due to a very small number of features found. this, of course, can be fixed by changing the 'feature_params', but I was wondering if anyone encountered this with the original code.
I run with Python 3.

thanks, Offir

[stalestar]

@offirk Hi, i encounter the same error, have you fix it ？

[offirk]

I changed the way I search for features (to decrease the probability for not finding enough features) and added a check for the case where no homography was found, to use the last homography (from the previous frame) as the current homography.