Sparse representation and least squares-based classification in face recognition. Iliadis, M., Spinoulas, L., Berahas, A. S., Wang, H., & Katsaggelos, A. K. In 2014 22nd European Signal Processing Conference (EUSIPCO), pages 526-530, Sep., 2014.
Sparse representation and least squares-based classification in face recognition [pdf]Paper  abstract   bibtex   
In this paper we present a novel approach to face recognition. We propose an adaptation and extension to the state-of-the-art methods in face recognition, such as sparse representation-based classification and its extensions. Effectively, our method combines the sparsity-based approaches with additional least-squares steps and exhitbits robustness to outliers achieving significant performance improvement with little additional cost. This approach also mitigates the need for a large number of training images since it proves robust to varying number of training samples.

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