Question about PDB

Question

Question about PDB

mrgloom opened this issue 6 years ago · 3 comments

Why we not always use 1st eigenvector?
https://github.com/FengZhenhua/Wing-Loss/blob/master/pdb.m#L27

Answer 1 · 2018-10-24T20:37:56.000Z

@mrgloom Hi, in general, the 1st eigenvector controls pose variations. But, I visualised the results by changing the weights of the first 3 eigenvectors for different datasets. I found that, for AFLW, the 2nd one controls pose variations. This is why I used the 2nd for AFLW and 1st for the others.

Answer 2 · 2018-11-17T13:11:03.000Z

What does it mean 'controls pose variations' in terms of pitch, yaw, roll?

Answer 3 · 2018-11-20T20:38:47.000Z

@mrgloom Hi, here the term 'pose' is a general term. But, in our method, we focus on the yaw rotation for the term 'pose'. You can also do data balancing for any other `poses' or a mixture of different 'poses'.