Modelling Nonrigid Object from Video Sequence Based on Power Factorization

Recovering the 3D structure and motion of nonrigid object from a monocular image sequence is an important and difficult task in computer vision. Many previous methods on this problem utilize the extension technique of SVD factorization based on rank constraint to the tracking matrix. In this paper,...

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Bibliographic Details
Published in16th International Conference on Artificial Reality and Telexistence--Workshops (ICAT'06) pp. 98 - 103
Main Authors Guanghui Wang, Guoqiang Sun, Xingtang Li, Shewei Wang
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.11.2006
Subjects
Cameras
Computer vision
Image reconstruction
Image sequences
Iterative algorithms
Layout
Matrix decomposition
Shape
Tracking
Video sequences
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Summary:Recovering the 3D structure and motion of nonrigid object from a monocular image sequence is an important and difficult task in computer vision. Many previous methods on this problem utilize the extension technique of SVD factorization based on rank constraint to the tracking matrix. In this paper, we propose a constrained power factorization (CPF) algorithm that combines the orthonormal constraint and the replicated block structure of the motion matrix directly into the iterations. The proposed algorithm overcomes the limitations of previous SVD based methods. It is easy to implement and can even cope with the tracking matrix with missing data. Based on the solutions of the CPF, a novel sequential factorization technique is proposed to recover the shape and motion of new frames in realtime. Extensive experiments on synthetic data and real sequences validate the effectiveness of the algorithm and show noticeable improvements over the previous methods.
ISBN:9780769527543
076952754X
DOI:10.1109/ICAT.2006.88