Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/4367
Title: Efficient color face detection algorithm under different lighting conditions
Authors: Chow, TY
Lam, KMK 
Wong, KW
Keywords: Face recognition
Image colour analysis
Image resolution
Image segmentation
Maximum likelihood estimation
Issue Date: Jan-2006
Publisher: SPIE and IS&T
Source: Journal of electronic imaging, Jan.-Mar. 2006, v. 15, no. 1, 013015, p. 1-10 How to cite?
Journal: Journal of electronic imaging 
Abstract: We present an efficient and reliable algorithm to detect human faces in an image under different lighting conditions. In our algorithm, skin-colored pixels are identified using a region-based approach, which can provide more reliable skin color segmentation under various lighting conditions. In addition, to compensate for extreme lighting conditions, a color compensation scheme is proposed, and the distributions of the skin-color components under various illuminations are modeled by means of the maximum-likelihood method. With the skin-color regions detected, a ratio method is proposed to determine the possible positions of the eyes in the image. Two eye candidates form a possible face region, which is then verified as a face or not by means of a two-stage procedure with an eigenmask. Finally, the face boundary region of a face candidate is further verified by a probabilistic approach to reduce the chance of false alarms. Experimental results based on the HHI MPEG-7 face database, the AR face database, and the CMU pose, illumination, and expression (PIE) database show that this face detection algorithm is efficient and reliable under different lighting conditions and facial expressions.
URI: http://hdl.handle.net/10397/4367
ISSN: 1017-9909
DOI: 10.1117/1.2179080
Rights: Copyright 2006 Society of Photo-Optical Instrumentation Engineers and IS&T. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
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