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We work with another program to first create a human head with particular facial features, then we try to join it with another scanned mesh (the human body) in Blender. Both are in obj format.

The problem is when we use Ctrl+J, it mixes all the colors and one of the meshes loses its colors by doing this. Is there another way to join the head and the body without losing the real color of both meshes?

This is the result of the joining in Blender software and the other is obj obtained from the 3d scanner directly, and I need to preserve the colors of the face and the body individually

enter image description here enter image description here

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  • $\begingroup$ How are those colors applied to the mesh? Texture? Vertex Colors? Materials? Joining them should have no effect. Could you post some screenshots of the before and after results? $\endgroup$ – Duarte Farrajota Ramos Apr 18 '17 at 16:33
  • $\begingroup$ Hi @DuarteFarrajotaRamos thanks for replying. I have a 3d sense scanner, thats how i got texture for half of the mesh, the other half come from another software of reconstruction of faces that allows me to export in obj , ply and others. Because i have to join them i use blender with ctrl+J but it loses our own colors ( independent) and it result with the color of the mesh I obtain by the software in obj. If you speak spanish please tell me. $\endgroup$ – andrea Apr 18 '17 at 20:06
  • $\begingroup$ @DuarteFarrajotaRamos $\endgroup$ – andrea Apr 21 '17 at 22:43
  • $\begingroup$ Any chance we could look at any example file where the issues happen? Could you please edit your question and upload as simplified file as possible file reproducing the problem with all textures and relevant data packed? $\endgroup$ – Duarte Farrajota Ramos Apr 22 '17 at 3:32
  • $\begingroup$ @DuarteFarrajotaRamos $\endgroup$ – andrea Apr 24 '17 at 16:02
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Here is a procedure for baking the color from a 3D scan to a UV map in Blender: https://software.intel.com/en-us/blogs/2015/03/24/RealSense-3D-scan-Vertex-Color-to-UV-Map-Blender

Follow this process for both meshes (the head then the body). Then try to join them. If the textures are baked and applied via a UV map, both colors should remain when you join the meshes. enter image description here

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  • $\begingroup$ this is the result of the joining in blender software and the other is obj obtaining from the 3d scanner directly and I need to preserve the colors of the face and the body individually $\endgroup$ – andrea Apr 24 '17 at 15:49

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