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Traditional canonical correlation analysis as an effective feature extraction method has been widely used in many areas of pattern recognition, including facial expression recognition. The canonical correlation analysis makes the within-class covariance matrix constituted of two groups of feature vectors to be singular, resulting in small sample size problem, meanwhile the canonical correlation analysis as a global linear projection method, not a good description of nonlinear facial expression recognition problem. In order to solve the above problems, we present a facial expression recognition algorithm based on modular two dimensional canonical correlation analysis. The algorithm uses a modular method, and better takes advantage of local non-linear characteristics of the facial expression image, meanwhile the direct use of two-dimensional facial expression feature matrix is effective to relieve the small sample size problem. In recognition stage, we use the voting method, which can improve the robustness of local expression feature changes. Experiments on JAFFE facial expression database show that the proposed method is robust and effective. © 2013 by Binary Information Press.
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