.grd output bytes size much smaller than expected (as in the code)
merlinyx opened this issue · comments
Hi! I was trying to run step1 of the pipeline with a <subject>_minimal_tpose.ply file and I ran into the error "ValueError: bytes length not a multiple of item size" around these lines. It was caused by the fact that the generated .grd files have only 524391~524393 bytes, which is much smaller than grid_res ** 3 * 8 when skinning_grid_depth is 8, and is also not a power of 2. Hacking the grid_res is probably not a good idea; may I know what might be causing this and how I should solve this? Thank you!
Hi, the .grd files are the output of the PointInterpolant app. If it was run correctly, each .grd file should be 128MB. You can check whether PointInterpolant terminates correctly. You can also check the temporary input files to PointInterpolant in data_tmp_constraints. Each cano_data_lbs_val_xx.xyz contain a 6890x(3+1) matrix, consisting of SMPL vertex coordinates and the skinning weights. Each cano_data_lbs_grad_xx.xyz contain a 6890x(3+3) matrix, consisting of vertex coordinates and the skinning gradients as described in the paper.
I see, thank you for the tips! I'll take a look!