The Video Face Book

摘要

Videos are often characterized by the human participants, who in turn, are identified by their faces. We present a completely unsu-pervised system to index videos through faces. A multiple face detector-tracker combination bound by a reasoning scheme and operational in both forward and backward directions is used to extract face tracks from individual shots of a shot segmented video. These face tracks collectively form a face log which is filtered further to remove outliers or non-face regions. The face instances from the face log are clustered using a GMM variant to capture the facial appearance modes of different people. A face Track-Cluster-Correspondence-Matrix (TCCM) is formed further to identify the equivalent face tracks. The face track equivalences are analyzed to identify the shot presences of a particular person, thereby indexing the video in terms of faces, which we call the " Video Face Book".