PATTERN RECOGNITION

Human face recognition using PCA on wavelet subband

[+] Author Affiliations
G. C. Feng

Hong Kong Baptist University, Department of Computer Science, Kowloon, Hong Kong and Zhangshan University, Department of Mathematics, Guangzhou, China

P. C. Yuen

Hong Kong Baptist University, Department of Computer Science, Kowloon, Hong Kong

D. Q. Dai

Zhangshan University, Department of Mathematics, Guangzhou, China

J. Electron. Imaging. 9(2), 226-233 (Apr 01, 2000). doi:10.1117/1.482742
History: Received May 27, 1999; Revised Feb. 22, 2000; Accepted Mar. 27, 2000
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Abstract

Together with the growing interest in the development of human and computer interface and biometric identification, human face recognition has become an active research area since early 1990. Nowadays, principal component analysis (PCA) has been widely adopted as the most promising face recognition algorithm. Yet still, traditional PCA approach has its limitations: poor discriminatory power and large computational load. In view of these limitations, this article proposed a subband approach in using PCA—apply PCA on wavelet subband. Traditionally, to represent the human face, PCA is performed on the whole facial image. In the proposed method, wavelet transform is used to decompose an image into different frequency subbands, and a midrange frequency subband is used for PCA representation. In comparison with the traditional use of PCA, the proposed method gives better recognition accuracy and discriminatory power; further, the proposed method reduces the computational load significantly when the image database is large, with more than 256 training images. This article details the design and implementation of the proposed method, and presents the encouraging experimental results. © 2000 SPIE and IS&T.

© 2000 SPIE and IS&T

Citation

G. C. Feng ; P. C. Yuen and D. Q. Dai
"Human face recognition using PCA on wavelet subband", J. Electron. Imaging. 9(2), 226-233 (Apr 01, 2000). ; http://dx.doi.org/10.1117/1.482742


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