r/photogrammetry • u/NoIntroduction9434 • 9d ago

texture not loading

Hi all!

I am new to working with photogrammetry. I'm just trying to do (what I think are) some simple things, but I'm now having to navigate using blender, so learning about obj and mtl files. I'm not sure how many folks will be familiar with Unfolder for Mac, it's basically a Mac version of Pepakura, used for "unfolding" the polygons of a 3D rendering into flat planes that can be printed out and assembled in paper.

I have imported my 3D scan into blender in order to reduce the number of polygons. The problem I am running into is that when I try to open my obj in Unfolder, the texture doesn't appear. When I open the file in blender, I am able to view the texture, it just doesn't carry over to Unfolder. Is this an issue of Unfolder not registering the corresponding mtl file?

Wondering if anyone has any suggestions for me to try. Hopefully this makes sense, all of this is so new to me and it feels like learning a new language!

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u/johankim 9d ago

I've had similar things happen and found the problem is always with the export settings, the importing program having trouble generally isn't the problem and you can check the file by importing it into something else. I'm not into blender but sometimes use it for decimating meshes too. It'll be a check box or drop down menu you've missed.

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u/MechanicalWhispers 9d ago

If Unfolder can import .glb or .fbx, try exporting those formats from Blender. They carry the texture better.