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Title of Journal: Vis Comput

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Abbravation: The Visual Computer

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Springer Berlin Heidelberg

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DOI

10.1006/jsco.1994.1033

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1432-2315

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Pose analysis using spectral geometry

Authors: Jiaxi Hu Jing Hua
Publish Date: 2013/06/01
Volume: 29, Issue: 9, Pages: 949-958
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Abstract

We propose a novel method to analyze a set of poses of 3D models that are represented with triangle meshes and unregistered Different shapes of poses are transformed from the 3D spatial domain to a geometry spectrum domain that is defined by Laplace–Beltrami operator During this spacespectrum transform all nearisometric deformations mesh triangulations and Euclidean transformations are filtered away The different spatial poses from a 3D model are represented with nearisometric deformations therefore they have similar behaviors in the spectral domain Semantic parts of that model are then determined based on the computed geometric properties of all the mapped vertices in the geometry spectrum domain Semantic skeleton can be automatically built with joints detected as well The Laplace–Beltrami operator is proved to be invariant to isometric deformations and Euclidean transformations such as translation and rotation It also can be invariant to scaling with normalization The discrete implementation also makes the Laplace–Beltrami operator straightforward to be applied on triangle meshes despite triangulations Our method turns a rather difficult spatial problem into a spectral problem that is much easier to solve The applications show that our 3D pose analysis method leads to a registrationfree pose analysis and a highlevel semantic part understanding of 3D shapes


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