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alexsax / 2D-3D-Semantics

The data skeleton from Joint 2D-3D-Semantic Data for Indoor Scene Understanding
http://3dsemantics.stanford.edu
Apache License 2.0
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What's the differences between the area_*/3d/rgb.obj and area_*/3d/rgb_textures/*.obj? #7

Closed zhixy closed 7 years ago

zhixy commented 7 years ago

They looks almost identical to each other in meshlab

alexsax commented 7 years ago

Good catch. rgb.obj is just the other file renamed (via loading and saving out in Blender). Both contain the same information, though, so you can use either. Since rgb.obj is a standard name shared among all the areas, I recommend using it as the canonical file.

zhixy commented 7 years ago

Ok, got it. I have another question, the semantic.obj files include the labels, right? However, the label information is only supplied in the material name, are there any tools help me get the corresponding label of a image rendered from rgb.obj?

alexsax commented 7 years ago

Sorry about the long delay. I missed this! The labels are supplied in the material name, but the color from the semantic images can be interpreted as a 24-bit integer. This integer gives you an index into the array in semantic_labels.json, which contains the material name.

If you have an rgb image rendered from rgb.obj, then you can use the corresponding semantic image to get the labels. If you are rendering images yourself, then you can use semantic.obj. Hope this helps!