SIGGRAPH 2004 - The 31st international conference on computer graphics and interactive techniques
Conferenece Exhibition Call For Participation Presenters Media Registration spacer

Modeling Medley
Thursday, 12 August
8:30 - 10:15 am
Room 515A
Session Chair: Cindy Grimm, Washington University

Refolding Planar Polygons
A guaranteed technique for generating intersection-free interpolation sequences between non-intersecting planar polygons. Our algorithm guides a user-supplied distance heuristic that determines the overall character of the interpolation sequence.

Hayley N. Iben
University of California, Berkeley
iben (at)

James F. O'Brien
University of California, Berkeley

Erik D. Demaine
Massachusetts Institute of Technology
Modeling and Simulation of Sharp Creases
This sketch shows a complex combination of stiff and soft behavior of sharp creases of cloth  it makes an angled ridge or crumples to form breaks.

Min-Hyung Choi
University of Colorado at Denver
minchoi (at)

Min Hong
University of Colorado Health Sciences Center

Samuel Welch
University of Colorado at Denver
Prong-Features Detection of a 3D Model Based on the Watershed Algorithm
In this sketch, a simple and robust prong-features detection algorithm is proposed for us in many applications, such as model decomposition, skeleton extraction, and object matching.

Fu-Che Wu
National Taiwan University
joyce (at)

Bing-Yu Chen
Rung-Huei Liang
Ming Ouhyoung
National Taiwan University
Similarity-Based Surface Modeling Using Geodesic Fans
Intuitive, efficient surface modeling that replicates local changes such as deformations, painting, or filtering at all similar areas of the surface using geodesic fans, a novel neighborhood representation for surfaces.

Steve Zelinka
University of Illinois at Urbana-Champaign
zelinka (at)

Michael Garland
University of Illinois at Urbana-Champaign

sketches committee
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Conference 8-12 August, Exhibition 10-12 August.  In Los Angeles, CA