Beyond one still image: Face recognition from multiple still images or a video sequence

While face recognition (FR) from a single still image has been extensively studied over a decade, FR based on a group of still images (also referred to as multiple still images) or a video sequence is an emerging topic. This is mainly evidenced by the growing increase in the literature. For instance, a research initiative called Face Recognition Grand Challenge [1] has been organized. One specific challenge directly addresses the use of multiple still images to improve the recognition accuracy significantly [3]. Recently a workshop jointly held with CVPR 2004 was devoted to face processing in video [2]. It is predictable that, with the ubiquity of video sequences, face recognition based on video sequences will become more and more popular.