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vchoutas / smplx

SMPL-X
https://smpl-x.is.tue.mpg.de/
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Composition of 'body_pose' from vectors and angles #203

Open juliaoks opened 4 months ago

juliaoks commented 4 months ago

Hi there,

I want to clarify my understanding of the body_pose parameter to correctly reconstruct a body_pose by predicting an angle in addition to joints during 3D Human Pose Estimation (HPE).

If I understand the definition of the body_pose parameter in axis-angle representation correctly, a single entry is a product of an angle with a directional unit vector for a part k, computed from a joint location and its parent joint location in a kinematic tree. This would mean that one can reconstruct the body_pose parameter in the same way from predicted 3D joints and angles, right? As of now, my reconstruction doesn't yield values similar to the ground truth body_pose parameter, so I am probably missing something.

Many thanks in advance!

Liu-xiaoyu11 commented 4 months ago

Hello, @juliaoks have you found the cause of this issue? I seem to be encountering a similar problem where the body_pose in the .pkl file is incorrect after converting SMPL-X to SMPL. Looking forward to your reply.