3

I am trying to turn a Graphics3D object (the Stanford Bunny) into a mesh. The result from using DiscretizeGraphics has too many triangles.

Is there a way to reduce the number of triangles in a mesh while maintaining its form?

I have attached a picture of the bunny for reference.

Too-triangular bunny

mikabozu
  • 403
  • 3
  • 7
  • 4
    Welcome to the site, mikabozu! The research field related to your question is called mesh simplification, which is a quite dedicated topic. A lot of resources, like papers and open courses, can be found online. – Silvia Jan 07 '21 at 08:25
  • 9
    Have you seen Is it possible to re-mesh, downsample & upsample a DiscretizeRegion object?? – C. E. Jan 07 '21 at 08:43
  • @RohitNamjoshi: Ummm... why did you post the exact same link as C.E. nine hours later?? – David G. Stork Jan 07 '21 at 23:02
  • @DavidG.Stork Whoa! I certainly did not do that. What I did do was vote to close as Duplicate and picked that link as the duplicate. Does that action automatically add a comment? – Rohit Namjoshi Jan 08 '21 at 01:10
  • @C.E. I have seen that question, but the solution provided there does not seem to work on the bunny. It continues to have the same number of faces. Also, I am not sure if one could use such a method to, say, reduce the number of triangles by 90% or more. – mikabozu Jan 08 '21 at 01:23
  • 2
    As I understand it, the topic is hard from a discrete differential geometry view point. One of the difficulties is to maintain or gracefully simplify the topology of the region. But nowadays, people are trying to view it as a 3D image processing problem, so some CNN based methods are proposed, e.g. this one from Siggraph 2019. If you are just looking for a quick tool, I'd suggest looking in the machine learning direction. – Silvia Jan 09 '21 at 06:13

0 Answers0