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Sparse representation is a significant method to perform image classification for face recognition. Sparsity of the image representation is the key factor for robust image classification. As an improvement to sparse representation-based classification, collaborative representation is a newer method for robust image classification. Training samples of all classes collaboratively contribute together to represent one single test sample. The ways of representing a test sample in sparse representation and collaborative representation are very different, so we propose a novel method to integrate both sparse and collaborative representations to provide improved results for robust face recognition. The method first computes a weighted average of the representation coefficients obtained from two conventional algorithms, and then uses it for classification. Experiments on several benchmark face databases show that our algorithm outperforms both sparse and collaborative representation-based classification algorithms, providing at least a 10% improvement in recognition accuracy.


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Weighted average integration of sparse representation and collaborative representation for robust face recognition

Show Author's information Shaoning Zeng1( )Yang Xiong1
Huizhou University, Guangdong 516007, China.

Abstract

Sparse representation is a significant method to perform image classification for face recognition. Sparsity of the image representation is the key factor for robust image classification. As an improvement to sparse representation-based classification, collaborative representation is a newer method for robust image classification. Training samples of all classes collaboratively contribute together to represent one single test sample. The ways of representing a test sample in sparse representation and collaborative representation are very different, so we propose a novel method to integrate both sparse and collaborative representations to provide improved results for robust face recognition. The method first computes a weighted average of the representation coefficients obtained from two conventional algorithms, and then uses it for classification. Experiments on several benchmark face databases show that our algorithm outperforms both sparse and collaborative representation-based classification algorithms, providing at least a 10% improvement in recognition accuracy.

Keywords: sparse representation, image classification, collaborative representation, face recognition

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Publication history

Revised: 05 May 2016
Accepted: 22 September 2016
Published: 15 November 2016
Issue date: December 2016

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© The Author(s) 2016

Acknowledgements

This work was supported in part by the National Natural Science Foundation of China (Grant No. 61502208), the Natural Science Foundation of Jiangsu Province of China (Grant No. BK20150522), the Scientific and Technical Program of City of Huizhou (Grant No. 2012-21), the Research Foundation of Education Bureau of Guangdong Province of China (Grant No. A314.0116), and the Scientific Research Starting Foundation for Ph.D. in Huizhou University (Grant No. C510.0210).

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