Journal
COMPUTER-AIDED DESIGN
Volume 39, Issue 5, Pages 398-407Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.cad.2007.02.009
Keywords
3D shape retrieval; bending invariance; geodesic distance; graph distance; shape descriptor; spectral embedding
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We present an approach for robust shape retrieval from databases containing articulated 3D models. Each shape is represented by the eigenvectors of an appropriately defined affinity matrix, forming a spectral embedding which achieves normalization against rigid-body transformations, uniform scaling, and shape articulation (i.e., bending). Retrieval is performed in the spectral domain using global shape descriptors. On the McGill database of articulated 3D shapes, the spectral approach leads to an absolute improvement in retrieval performance for both the spherical harmonic and the light field shape descriptors. The best retrieval results are obtained using a simple and novel eigenvalue-based descriptor we propose. (c) 2007 Elsevier Ltd. All rights reserved.
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