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Submitted by Bruno Levy, posted on September 04, 2003




Image Description, by Bruno Levy



This image demonstrates how to achieve dramatic mesh reduction while preserving the visual appearance of objects using GPU programming. The first image shows a 500 facets version of the well known Stanford Bunny. The second image shows a normal-mapped version. Note that the triangles are still visible around the silhouette. The third image shows a normal-mapped version, with Bezier triangles generated by the GPU, using vertex shaders. Note the smooth silhouette.

The normal-map is generated using our LSCM parameterization method. The Bezier triangles are generated using Vlachos's approach.

Credits:
Mesh decimation algorithm: Nicolas Ray
Bezier vertex shader: Wan Chiu Li

Biblio:
- Vlachos, Peters, Boyd, Mitchell, Curved PN Triangles, ACM Symposium on Interactive 3D graphics, 2001
- Levy, Petitjean, Ray, Maillot, Least Squares Conformal Maps, ACM Transactions on Graphics (SIGGRAPH), 2002

Links:
Publications and more details can be found in my home page:
http://www.loria.fr/~levy


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