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In this paper, a novel approach for expression invariant face recognition is proposed. It's implemented by common vector and the feature extraction is based on Curvelet transform, which is one of the multiscale geometric transforms and has better sparsity than the other transforms, especially for the edges. We assume the different images of the same subject as an interrelated ensemble with expression variations which could be viewed as sparse respectively. Then, each subject can be represented by a common feature vector, capturing its essential features, and an innovation feature vector, corresponding to the expression variations. By keeping the two feature vectors of each subject, we can use them to classify an image by the minimum reconstruction error.
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