Regarding obj textures

[eeshashetty]

Hi, the code works perfectly well and I'm getting really accurate outputs!

My issue is with the .mat file and the texture file.

1. How do I use face_color, face_texture, tri, etc on the 3D obj?
2. The 3D obj renders with the texture on Meshlab but on blender only the mesh. Why is it so?
3. Is there a way to extract the texture separately as a png file from the obj? Either from meshlab/blender or a python package?

Thanks!

[yuripourre]

@eeshashetty

1. If I am not mistaken the produced obj uses vertex color instead of a texture. This is not really a .obj standard and it's not supported by mostly obj loaders (and I believe) including blender.
2. Same as 1
3. If you know how to code shouldn't be hard to extract a texture from the vertices' colors

Edit: You would have to place each vertex into an image, calculate neighbors and then interpolate the colors.

[eeshashetty]

Thanks for your response!

Yes, the output is vertex colors and not a texture file. And yes that’s where I am facing an issue, because its not a standard obj format.

If someone knows how to convert this into a texture file via a script please share here. I tried googling, but haven't been able to find any good links that lead to a proper solution for this issue yet.

[JeongDongBaek]

@eeshashetty hi, Is the problem solved by any chance? I am facing the same problem. I want to be rendered in Unity finally, but the shader that renders the vertex color doesn't work. Did you find a way?