Feature selection for high dimensional face image using self-organizing maps

Authors:
Xiaoyang Tan;Songcan Chen;Zhi-Hua Zhou;Fuyan Zhang
Affiliations:
National Laboratory for Novel Software Technology, Nanjing University, Nanjing, China;Department of Computer Science and Engineering, Nanjing University of Aeronautics & Astronautics, Nanjing, China;National Laboratory for Novel Software Technology, Nanjing University, Nanjing, China;National Laboratory for Novel Software Technology, Nanjing University, Nanjing, China
Venue:
PAKDD'05 Proceedings of the 9th Pacific-Asia conference on Advances in Knowledge Discovery and Data Mining
Year:
2005

Citing 9
Cited 1

Self-organizing maps

Self-organizing maps
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Abstract

While feature selection is very difficult for high dimensional, unstructured data such as face image, it may be much easier to do if the data can be faithfully transformed into lower dimensional space. In this paper, a new method is proposed to transform the high dimensional face images into low-dimensional SOM topological space, and then identify important local features of face images for face recognition automatically using simple statistics computed from the class distribution of the face image data. The effectiveness of the proposed method are demonstrated by the experiments on AR face databases, which reveal that up to 80% local features can be pruned with only slightly loss of the classification accuracy.