Segmentation of Video by Clustering and Graph Analysis

摘要

Many video programs have story structures that can be recognized through the clustering of video contents based on low-level visual primitives and the analysis of high-level structures imposed by temporal arrangement of composing elements. In this paper we propose techniques and formulations to match and cluster video shots of similar visual contents, taking into account the visual characteristics and temporal dynamics of video. In addition, we extend theScene Transition Graphrepresentation for the analysis of temporal structures extracted from video. The analyses lead to automatic segmentation of scenes and story units that cannot be achieved with existing shot boundary detection schemes and the building of a compact representation of video contents. Furthermore, the segmentation can be performed on a much reduced data set extracted from compressed video and works well on a wide variety of video programming types. Hence, we are able to decompose video into meaningful hierarchies and compact representations that reflect the flow of the story. This offers a mean for the efficient browsing and organization of video.