Title :
Independent Gabor analysis of illumination insensitive isophote-angle for face recognition
Author :
Gaoyun An ; Jiying Wu ; QiuQi Ruan
Author_Institution :
Inst. of Inf. Sci., Beijing Jiaotong Univ., Beijing, China
Abstract :
A new independent Gabor analysis of the isophote angle is proposed for face recognition. The isophote is the curve of constant intensity in image, which represents the geometric object contour. Isophote angles are proved to be insensitive to the illumination; therefore, they are adopted in our method for recognition under low-level lighting conditions. Then, a bank of Gabor filters is built to exact Gabor representations of the isophote angles. Last, the higher-order statistical relationships among variables are extracted for classifier, where the cosine distance function computed in gradient domain achieves the best performance. The experimental results demonstrate that our method outperform the conventional methods under varying illumination and other outliers (pose, expression, distance, etc.), especially in the large scale face databases.
Keywords :
Gabor filters; face recognition; feature extraction; gradient methods; image classification; image representation; lighting; statistical analysis; Gabor filter; Gabor representation; classifier extraction; cosine distance function; face recognition; gradient domain; higher-order statistical relationship; illumination insensitive isophote-angle; image constant intensity; independent Gabor analysis; large scale face database; face recognition; gradientface; illumination insensitive; isophote angle;
Conference_Titel :
Wireless, Mobile & Multimedia Networks (ICWMMN 2011), 4th IET International Conference on
Conference_Location :
Beijing
Electronic_ISBN :
978-1-84919-507-2
DOI :
10.1049/cp.2011.1000