I'm new to Blender and not a 3D designer. I'm a photogrammetrist.

I have a very complex mesh that I created with photogrammetry. I used Blender to repair the mesh in places where it did not generate good connections. I'd like to now go back and paint the fixed surfaces with texture I've pulled from the photos.

enter image description here

The problem is, since I've added new faces, the UV map is scrambled and overlapping my new faces with old texture. It applies the wrong textures to the faces.

enter image description here

Is there a way (inside or outside of Blender) that I can just paint my texture onto the surfaces or unwrap the new faces without destroying the existing texture?

  • $\begingroup$ You can unwrap untextured mesh parts and position them in empty areas on UV map. On the other hand that should be fixed in your photogrammetry software by assigning colors to vertices in the fixed areas. $\endgroup$
    – Denis
    Apr 23, 2015 at 17:31


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