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open-forest-observatory / geograypher

Multiview Semantic Reasoning with Geospatial Data
BSD 3-Clause "New" or "Revised" License
10 stars 4 forks source link

Explore `pyvista raytrace` as an alternative to `pytorch3d` #29

Closed russelldj closed 4 months ago

russelldj commented 7 months ago

This could be an alternative to pytorch3d pixel-to-face correspondence computation. I'm not sure how the runtimes would compare, or if it does occlusion checking properly. But it would reduce the complexity by not depending on pytorch3d, which is difficult to install.

russelldj commented 4 months ago

I'm pretty sure that #73 could be used as an alternative to this. Rather than using a specific function to check which face a pixel corresponds to, we could simply render a texture that encodes the face ID. This might require doing multiple renders if there are more than 256^3 faces, but I think that's workable.