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Issue No.03 - May/June (2008 vol.14)
pp: 666-679
In computer graphics, triangular mesh representations of surfaces have become very popular. Compared with parametric and implicit forms of surfaces, triangular mesh surfaces have many advantages, such as easy to render, convenient to store and the ability to model geometric objects with arbitrary topology. In this paper, we are interested in data processing over triangular mesh surfaces through PDEs (partial differential equations). We study several diffusion equations over triangular mesh surfaces, and present corresponding numerical schemes to solve them. Our methods work for triangular mesh surfaces with arbitrary geometry (the angles of each triangle are arbitrary) and topology (open meshes or closed meshes of arbitrary genus). Besides the flexibility, our methods are efficient due to the implicit/semi-implicit time discretization. We finally apply our methods to several filtering and texture applications such as image processing, texture generating and regularization of harmonic maps over triangular mesh surfaces. The results demonstrate the flexibility and effectiveness of our methods.
Computer Graphics, Partial Differential Equations, Image Processing and Computer Vision
Chunlin Wu, Jiansong Deng, Falai Chen, "Diffusion Equations over Arbitrary Triangulated Surfaces for Filtering and Texture Applications", IEEE Transactions on Visualization & Computer Graphics, vol.14, no. 3, pp. 666-679, May/June 2008, doi:10.1109/TVCG.2008.10
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