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Retrieval of Time-Varying Mesh and motion capture data using 2D video queries based on silhouette shape descriptors

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3 Author(s)
Kasai, D. ; Dept. of Inf. & Commun. Eng., Univ. of Tokyo, Tokyo, Japan ; Yamasaki, T. ; Aizawa, K.

This paper presents a retrieval system for time-varying mesh (TVM) and motion capture data using 2D video queries. Previous approaches have used other TVM and motion capture data as queries and the cost for query generation was a significant issue. Instead, the proposed system uses 2D video queries, which can be easily captured by a single camera, enabling end users to retrieve 3D motion sequences such as TVM and motion capture data easily and interactively. We introduce the P-type Fourier descriptor, which is a feature of 2D contour images. TVM and computer graphics sequences rendered from motion capture data are silhouetted rendering from multiple viewpoints. Feature vectors for TVM and motion capture data are generated by applying the P-type Fourier descriptor to these silhouetted images. Experimental results using four TVM sequences and motion capture data demonstrated an average retrieval accuracy of 88% in terms of nearest neighbors.

Published in:

Multimedia and Expo, 2009. ICME 2009. IEEE International Conference on

Date of Conference:

June 28 2009-July 3 2009