DOI: 10.3724/SP.J.1004.2013.02090

Acta Automatica Sinica (自动化学报) 2013/39:12 PP.2090-2099

Illumination Compensation for Face Recognition Using Only One Image

To reduce the negative impact of illumination on face recognition, we propose a new illumination compensation method based on image invariant calculation. This invariant (the sum of compensating angles, SCA) is calculated by summing two lighting angles in the proper-compensated state. The SCA only depends on single light source and can be computed only once for a lighting system. Based on the Frankfurt horizontal plane of a human skull, we propose a geometric face model of human skull structure. According to our face model, the compensating angle is calculated from the SCA for a face image taken in the same lighting system. With this compensating angle, the illumination compensation for a face image is done by an additive operation. The experimental results validate our method on the Yale B face database. Compared with Choi0s methods, our method makes obvious improvement on images with large lighting angle, and is more robust to light change in both horizontal and vertical directions.

Key words:Face recognition, geometric light-face model, illumination compensation, compensating angle

ReleaseDate:2014-07-21 17:04:32

Funds:National Natural Science Foundation of China (61102116)