How to import OBJ as parts, not singleton

Once again I am photoscanning interior rooms, about 1000 photos, decimating out to Maya, clean up low poly, then import to RC for projection of original photos. This is working fine, but the import clean poly OBJ always imports as a single mesh, or singleton. What I would like is for the 2 meshes in my OBJ to import into RC as a large, meaning it consists of two parts.

In the picture below, on screen left you can see my imported OBJ in RC says singleton, 1.5k tris, then in the middle is that same OBJ in Maya, 2 meshes, 2 mtls, 2 UV sets. On the far right is RC documentation talking about OBJ importing as large, or in parts.

My end goal is to bring in the two clean parts, which each have clean UV layout, then project and get two clean textures exported from RC, one for each mesh.

Thank you,
Jon Tojek

Hi Jon
in photogrammetry you need to have SINGLETONS only, no multiple meshes… You can import them separately but be cautious on occlusion issues on missing geometry…

Thank you for the answer Wishgranter,

but I do have a short follow up question. OK, I could import two OBJ files, and they will properly occlude each other. Then how would I project texture on both of them?

I will explain what I am doing, because perhaps there is a better approach. My room has much details on the walls and such, then it has stairs and some pipes as details. I plan to break the OBJ into two parts, and UV them separately to get maximum UV space on my walls. Then I hope to import both UV’s meshes into RC as obj, project texture on them at the same time, as they will occlude each other, then export out two nice new textures.

Currently when I import in my two meshes, I can only project on one at a time. In RC can I combine two singletons together for creating the texture?

Thank you, Jon Tojek

Hi Jon

Currently when I import in my two meshes, I can only project on one at a time. In RC can I combine two singletons together for creating the texture?

It is not possible as RC is not a geometry editor. You need to prepare the meshes in an external application before importing them into RC…