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MarilynKeller / OSSO

From a body shape, infer the anatomic skeleton.
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What is the required input format for body surface? #10

Closed siddhshenoy closed 1 year ago

siddhshenoy commented 1 year ago

Hello,

I am trying to infer a skeleton using OSSO and have tried it on existing ply files provided in the demo/data folder. I was successful in generating the skeletons for them however, when I try to generate a skeleton for a PLY file which I created using the blender SMPL addon it gives me the following error:

Input mesh should have the same topology as STAR or SMPL.

I printed the total number of vertices that the input model has and what the STAR model expects, it gave me the following values: Input Mesh: 7571 vertices STAR Mesh: 6890 vertices

I searched if anyone has encountered this issue in the past (from the issues section) there seems to be one however it seems like they haven't provided a resolution over there.

Does the program expect a STAR specific model as an input?

MarilynKeller commented 1 year ago

Hello,

I am surprised you get a mesh that is 7571 vertices out of the SMPL blender add-on. The exported SMPL mesh should have 6890 vertices. Maybe you exported another object along ? Can you share the .ply file?

siddhshenoy commented 1 year ago

Definitely, I am attaching the two screenshots along with the mesh attachment here.

The image below is the SMPL model created using the blender add-on (directly clicking the button for 'Add Model'): Note: Here it shows a vertex count of 6890.

image

The image below is the SMPL model being reimported as a PLY file after being exported from the model created using the addon

image

It happened to have more vertex count after I exported the SMPL model from blender.

Additionally, I am attaching the blender export options for the PLY file:

image

And here is the PLY file I exported from blender:

test.zip

MarilynKeller commented 1 year ago

Thanks for the detailed info. The mesh looks fine, I assume it is an export issue. Can you try exporting the mesh with "selection only" checked? If the number of vertices is still not 6890, try unchecking the 4 boxes in the geometry export options.

siddhshenoy commented 1 year ago

Yes, that resolved the vertex count issue. I investigated it a bit further as to which option was causing the issue, it seems like it was the "UVs" that caused the issue for me. Unchecking all the 4 checkboxes works too.

Thank you for your timely assistance, I'll close the issue.