Key-frame selection for automatic summarization of surveillance videos: a method of multiple change-point detection

Abstract

Recent years have witnessed a drastic growth of various videos in real-life scenarios, and thus there is an increasing demand for a quick view of such videos in a constrained amount of time. In this paper, we focus on automatic summarization of surveillance videos and present a new key-frame selection method for this task. We first introduce a dissimilarity measure based on f-divergence by a symmetric strategy for multiple change-point detection and then use it to segment a given video sequence into a set of non-overlapping clips. Key frames are extracted from the resulting video clips by a typical clustering procedure for final video summary. Through experiments on a wide range of testing data, excellent performances, outperforming given state-of-the-art competitors, have been demonstrated which suggests good potentials of the proposed method in real-world applications.