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Spectral clustering of linear subspaces for motion segmentation

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2 Author(s)
Lauer, F. ; Heidelberg Collaboratory for Image Process., Univ. of Heidelberg, Heidelberg, Germany ; Schnorr, C.

This paper studies automatic segmentation of multiple motions from tracked feature points through spectral embedding and clustering of linear subspaces. We show that the dimension of the ambient space is crucial for separability, and that low dimensions chosen in prior work are not optimal. We suggest lower and upper bounds together with a data-driven procedure for choosing the optimal ambient dimension. Application of our approach to the Hopkins155 video benchmark database uniformly outperforms a range of state-of-the-art methods both in terms of segmentation accuracy and computational speed.

Published in:

Computer Vision, 2009 IEEE 12th International Conference on

Date of Conference:

Sept. 29 2009-Oct. 2 2009