Render material segmentation maps

[chenzhekl]

Hello, everyone. I am staring to use BlenderProc and learned from the doc that it is possible to render instance/semantic segmentation maps from a scene. I am wondering if it is possible to render a material segmentation map in a similar way (i.e., pixels mapped by their materials)?

[themasterlink]

Hey,

out of the box we do not support this, yet. However, you can just simply split an object by its materials into different parts.

objs = bproc.loader.load_obj("test.obj")
for obj in objs:
    obj.edit_mode()
    bpy.ops.mesh.separate(type='MATERIAL')
    obj.object_mode()
objs = bproc.python.utility.BlenderUtility.get_all_mesh_objects()

I have not tested this code, but this should get you started.

Best,
Max

[chenzhekl]

Hi @themasterlink,

Thank you so much for your kind help! The code snippet perfectly solved my problem.

Thanks,
Zhe

[themasterlink]

Perfect!