Face recognition using LDA mixture model

Authors:
Hyun-Chul Kim;Daijin Kim;Sung Yang Bang
Affiliations:
Department of Computer Science and Engineering, POSTECH, San 31, Hyoja-Dong, Nam-Gu, Pohang 790-784, South Korea;Department of Computer Science and Engineering, POSTECH, San 31, Hyoja-Dong, Nam-Gu, Pohang 790-784, South Korea;Department of Computer Science and Engineering, POSTECH, San 31, Hyoja-Dong, Nam-Gu, Pohang 790-784, South Korea
Venue:
Pattern Recognition Letters
Year:
2003

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Abstract

Linear discriminant analysis (LDA) provides the projection that discriminates data well, and shows a good performance for face recognition. However, since LDA provides only one transformation matrix over the whole data, it is not sufficient to discriminate complex data consisting of many classes with high variations, such as human faces. To overcome this weakness, we propose a new face recognition method based on the LDA mixture model, where the set of all classes are partitioned into several clusters and we obtain a transformation matrix for each cluster. This accurate and detailed representation will improve classification performance. Simulation results of face recognition show that LDA mixture model outperforms PCA, LDA, and PCA mixture model in terms of classification performance.