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Sparse subspace clustering

Elhamifar, Ehsan, Vidal, Rene·2009·2009 IEEE Conference on Computer Vision and Pattern Recognition

Abstract

We propose a method based on sparse representation (SR) to cluster data drawn from multiple low-dimensional linear or affine subspaces embedded in a high-dimensional space. Our method is based on the fact that each point in a union of subspaces has a SR with respect to a dictionary formed by all other data points. In general, finding such a SR is NP hard. Our key contribution is to show that, under mild assumptions, the SR can be obtained `exactly' by using l1optimization. The segmentation of the data is obtained by applying spectral clustering to a similarity matrix built from this SR. Our method can handle noise, outliers as well as missing data. We apply our subspace clustering algorithm to the problem of segmenting multiple motions in video. Experiments on 167 video sequences show that our approach significantly outperforms state-of-the-art methods.

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Metadata

Authors
Elhamifar, E., & Vidal, R.
Venue
2009 IEEE Conference on Computer Vision and Pattern Recognition
Publisher
IEEE
Published
2009-06
Pages
2790-2797
ISSN
1063-6919 (ISSN-L)
OpenAlex
W2003217181
Cited by
1,243
References
3
FWCI
31.73
Type
conference paper
Language
en
Open access
closed

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CoChat. (2026). Citation check: Sparse subspace clustering. https://app.cochat.ai/papers/10.1109/cvpr.2009.5206547
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Elhamifar, E., & Vidal, R. (2009). Sparse subspace clustering. 2009 IEEE Conference on Computer Vision and Pattern Recognition. https://doi.org/10.1109/cvpr.2009.5206547

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