smplx
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horizontal flip (smpl_x)
Hi. Thank you very much for your smplx model.
I'm trying to flip the smpl_x model, given BEDLAM images, smpl_x parameters, and camera parameters.
(1) This is the original image and the rendered smpl_x model.
(2) When I flipped the mesh, the elbow was not flipped properly as follows.
I assume that the joint position of elbows (pivot for rotation) does not seem to be aligned as the following image, if the joints are correctly visualized: https://user-images.githubusercontent.com/82434566/114505402-4bad1480-9c6b-11eb-81b6-f384df4eeb2f.png You can find the elbow joints (18,19) do not seem to be aligned each other unlike SMPL.
The pairs of flipping index are as follows:
SMPL_X_FLIP_PAIRS = ( (1,2), (4,5), (7,8), (10,11), (13,14), (16,17), (18,19), (20,21), # body
(23,24), #eyes
(25,40), (26,41), (27,42), (28,43), (29,44), (30,45), (31,46), (32,47), (33,48), (34,49), (35,50), (36,51), (37,52), (38,53), (39,54) # hands
)
How can I correctly flip the mesh with smpl_x parameters?