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Pseudo-full-space representation based classification for robust face recognition
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DOI：10.1016/j.image.2017.09.006.png)
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Sparse representation based classification shows significant performance on face recognition (FR) when there are enough available training samples per subject. However, FR often suffers from insufficient training samples. To tackle this problem, a novel classification technique is presented based on utilizing existing available samples rather than constructing auxiliary training samples. An inverse projection-based pseudo-full-space representation (PFSR) is firstly proposed to stably and effectively exploit complementary information between samples. The representation ability of sparse representation-based methods is quantified by defining category concentration index. In order to match PFSR and complete classification, a simple classification criterion, category contribution rate, is designed. Extensive experimentations on the AR, Extended Yale B and CMU Multi-PIE databases demonstrate that PFSR-based classification method is competitive and robust for insufficient training samples FR problem. (C) 2017 Elsevier B.V. All rights reserved.
Keyword:
Sparse representation
Pseudo-full-space representation
Category concentration index
Category contribution rate
Face recognition
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