hot to save ply with colors

[YaroslavShchekaturov]

Tutorial :https://pytorch3d.org/tutorials/fit_textured_mesh

Follwing #913 I want to save my cow mesh as a ply with textures. To do that I've used

IO().save_mesh(new_mesh, "final_model.ply", binary=False, colors_as_uint8=True). but results seems weird in Meshlab.

How can I save ply such that Ill have the same colors as in my jupyter notebook?

[bottler]

I think meshlab has not read the colors at all and you are seeing a lighting effect.
What happens if you save with binary=False?
Note that you can't pass verts_colors to our IO().save_mesh - it will be ignored. The colors need to be in the mesh.

[YaroslavShchekaturov]

Hi Jeremy!

I've tried both with binary=False and with binary=True - results are the same. This is the result without verts_colors which is the same

[YaroslavShchekaturov]

I'm using pytorch3d 0.6 version now

[bottler]

Can you share the ply file here?

[bottler]

That file contains the same PLY data twice, not sure why. But the colors are as you've displayed in your meshlab screenshots: white with blue patches. I think the saving worked, it just doesn't look like the original cow.

[YaroslavShchekaturov]

I did the same rutine once again and got this this ply file https://drive.google.com/file/d/178QgiqtAJJT132jrkxN5O8QtKDryvAy4/view?usp=sharing

[bottler]

It's also mostly white with some other colors. I think you are successfully writing data from PyTorch3D which can be read by meshlab. What is your question?

[YaroslavShchekaturov]

I just do not understand why I have thsese magenta faces and how to get out of them

[bottler]

I think you have them in your notebook with PyTorch3D, which you have based on the tutorial. Can you look at that? And look what data is in the mesh you are saving and how it got there. Maybe use plot_batch_individually on the mesh object in the notebook.

[YaroslavShchekaturov]

But why dont I see them during vizualisation? If I visualize my mesh I get

[bottler]

What's the difference between new_mesh and new_src_mesh? Could you share the whole ipynb?

[YaroslavShchekaturov]

new_mesh and new_src_mesh are the same!
Sure! https://drive.google.com/file/d/1X6iZUrqLojhQVJVRC2_0eym2ZW-wL9rN/view?usp=sharing

[bottler]

I don't understand what has happened in your program. Could the colours in the PyTorch3D texture escape the [0,1] range?

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[klloggss]

I have exactly the same issue. The .ply model looks fine if I plot it in code, but if I want to export it has some strange blue areas.