2. Subdivision and Simplification
Cows are copyright Jason Somers <
Presented by Zachary Schneirov

3. Background copyright Eric Knight Holbrook
Problem: A fully immersive “virtual reality” requires many, many polygons.

4. Solution: reduce level of detail through mesh simplification!
(In a more intelligent way, of course.)

5. Simplification Techniques
Wavelets
Re-Tiling
Vertex Decimation
Vertex Clustering
Edge Collapse

6. Edge collapsing

7. How to determine when and where to collapse edges?

8. Energy optimization!
Where

9. Not every edge collapse is legal
You can’t change the topology!

10. Boundary edges

11. Vertex splitting

12. Subdivision surfaces

13. Doo-Sabin
Catmull-Clark

14. Doo-Sabin

15. Catmull-Clark

16. Iterative methods can eliminate creases