CS 284: CAGD
Lecture #27 -- We 11/26, 2003.

PREVIOUS < - - - - > CS 284 HOME < - - - - > CURRENT < - - - - > NEXT

Preparation:

READ THIS PAPER:

"Anisotropic Polygon Remeshing" Alliez et al.

Presentation by Alan Zhong

In this context, you may want to compare the parametrizations that were used
on some of the subdivision objects or evolver starting files that you have seen before ...

A genus-3 object with suitably aligned quadrilateral parametrization.

A sample collection of genus-4 objects ...

Remarks on Quiz#2

Scoring System: --> problem # (points):
#1(2), #2(2), #3(4), #4(2), #5(2), #6(2), #7(2), #8(2), #9(4), #10(10), #11(8), #12(6),
#13.1(4), #13.24), #13.3(4), #13.4(4), #13.5(4), #14a(2), #14b(3), #15a(2), #15b(4),
#16a(3), #16b(3), #17a(3), #17b(2), #18a(4), #18b(2), #19a(3), #19b(3), #20a(3), #20b(3).
Total possible 108p, Min.:50p, Max.:96p, Mean:83.5, STD:12.4.

Some frequently encountered misconceptions:
Pr#4: Only 6 (u,v) knot value pairs in each direction affect the shape of the patch (see also Quiz#1).
Pr#7: A "minimal surface" must have H=0 everywhere -- not just minimize some arbitrary energy functional.
Pr#9: The extraordinary n-gons themselves do become more regular; they shrink to affinely distorted regular n-gons.
Pr#13.3: even for the triangular subdivision schemes by Loop and Zorin the vertex growth factor is 4!
Pr#16b: Refinement is not a "clean-up" operation for messed-up meshes.
Pr#18a: Surfels also typically carry color and shading information.

Focus on your projects, so that you have some good results to show
next week during the 10-minute Project Presentations (=Phase 4)!