Robust face recognition under various illumination environments is very difficult and needs to be accomplished for successful commercialization. In this paper, we propose an improved illumination normalization method for face recognition. Illumination normalization algorithm based on anisotropic smoothing is well known to be effective among illumination normalization methods but deteriorates th...

In this paper, we propose a relighting system combined with an illumination estimation method using RGBD camera. Relighting techniques can achieve the photometric registration of composite images. They often need illumination environments of the scene which include a target object and the background scene. Some relighting methods obtain the illumination environments beforehand. In this case, th...

Changing illumination causes severe problems for face recognition in uncontrolled environments. It might be helpful for illumination invariant face recognition if information about the illumination can be recovered from the given face image. In this paper an illumination classification method based on Non-negative Matrix Factorization(NMF) is proposed. The traditional NMF approach together with...