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Article
Multi-Chart Geometry Images
Symposium on Geometry Processing Proceedings: Aachen, Germany
  • P. V. Sander, Harvard University
  • Z. J. Wood, Caltech
  • S. J. Gortler, Harvard University
  • H. Hoppe, Microsoft Research
Publication Date
6-23-2003
Abstract

We introduce multi-chart geometry images, a new representation for arbitrary surfaces. It is created by resampling a surface onto a regular 2D grid. Whereas the original scheme of Gu et al. maps the entire surface onto a single square, we use an atlas construction to map the surface piecewise onto charts of arbitrary shape. We demonstrate that this added flexibility reduces parametrization distortion and thus provides greater geometric fidelity, particularly for shapes with long extremities, high genus, or disconnected components. Traditional atlas constructions suffer from discontinuous reconstruction across chart boundaries, which in our context create unacceptable surface cracks. Our solution is a novel zippering algorithm that creates a watertight surface. In addition, we present a new atlas chartification scheme based on clustering optimization.

Disciplines
Number of Pages
10
Citation Information
P. V. Sander, Z. J. Wood, S. J. Gortler and H. Hoppe. "Multi-Chart Geometry Images" Symposium on Geometry Processing Proceedings: Aachen, Germany (2003)
Available at: http://works.bepress.com/zwood/1/