The Informedia Digital Library Project [Wactlar96] allows full content indexing and retrieval of text, audio and video material. Segmentation is an integral process in the Informedia digital video library. The success of the Informedia project hinges on two critical assumptions: that we can extract sufficiently accurate speech recognition transcripts from the broadcast audio and that we can segment the broadcast into video paragraphs, or stories, that are useful for information retrieval. In previous papers [Hauptmann97, Witbrock97, Witbrock98], we have shown that speech recognition is sufficient for information retrieval of pre-segmented video news stories. In this paper we address the issue of segmentation and demonstrate that a fully automatic system can extract story boundaries using available audio, video and closed-captioning cues. The story segmentation step for the Informedia Digital Video Library splits full-length news broadcasts into individual news stories. During this pha...
Alexander G. Hauptmann, Michael J. Witbrock