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| Feature Extraction Method of Maximum Scatter Difference Based on Preserving Projection |
| WANG Jian-Guo1,2, YANG Wan-Kou1, YANG Jing-Yu1 |
1.School of Computer Science and Technology, Nanjing University of Science and Technology,Nanjing 210094
2.Network and Education Center, Tangshan College, Tangshan 063000 |
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Abstract Firstly, the unsupervised discriminant projection (UDP) criterion is modified. Then, the feature extraction method of the maximum scatter difference based on preserving projection is proposed on the basis of the modified discriminant criterion. The proposed method adopts the difference of both nonlocal scatter and local scatter as discriminant criterion. Thus, the singular problem of local scatter caused by small sample size problem in UDP linear discriminant analysis is avoided. Finally, experimental results on Yale and FERET face databases demonstrate the effectiveness of the proposed method.
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Received: 12 November 2007
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2009, Vol. 22 
