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Issue No.06 - November/December (2009 vol.15)
pp: 1193-1200
Jing Hua , Wayne State University
Zhaoqiang Lai , Wayne State University
Guangyu Zou , Wayne State University
Ming Dong , Wayne State University
ABSTRACT
This paper formalizes a novel, intrinsic geometric scale space (IGSS) of 3D surface shapes. The intrinsic geometry of a surface is diffused by means of the Ricci flow for the generation of a geometric scale space. We rigorously prove that this multiscale shape representation satisfies the axiomatic causality property. Within the theoretical framework, we fur ther present a feature-based shape representation derived from IGSS processing, which is shown to be theoretically plausible and practically effective. By integrating the concept of scale-dependent saliency into the shape description, this representation is not only highly descriptive of the local structures, but also exhibits several desired characteristics of global shape representations, such as being compact, robust to noise and computationally efficient. We demonstrate the capabilities of our approach through salient geometric feature detection and highly discriminative matching of 3D scans.
INDEX TERMS
Scale space, feature extraction, geometric flow, Riemannian manifolds
CITATION
Jing Hua, Zhaoqiang Lai, Guangyu Zou, Ming Dong, "Intrinsic Geometric Scale Space by Shape Diffusion", IEEE Transactions on Visualization & Computer Graphics, vol.15, no. 6, pp. 1193-1200, November/December 2009, doi:10.1109/TVCG.2009.159
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