http://www1.cs.columbia.edu/CAVE/software/softlib/coil-100.p...
Not sure what kind of datasets you're looking for. You'll see actual products to test with.
I've been studying and working with GANs for about a year now. They are still very exciting, and I'd love to try to expand my codebase to new types of data.
Additionally, there are some recent techniques that haven't been tried with voxel-based renderings.
Perhaps there is another algorithm that can help go from voxel -> polygons as well.
I think with the right tech, time, and execution this could be a matter of:
1. Take a picture
2. Generate until you get the 3d model you want
Well, not exact cause I don't like their voxel building generation method.
I think a GAN + Procedural Generator is the winner.
edit: Let me know if you want to work on this cause it's an active area of research for us. See my HN profile for contact.
Curious to know more about your train of thought. I am working as a researcher in the domain and thinking of experimenting with GANs for 3D model estimation using similar inputs as the one in the paper I referred to.