Computer and Modernization

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Surveillance Video Keyframe Extraction Based on Objects Change

  

  1. (School of Computer Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China)
  • Received:2016-02-16 Online:2016-08-18 Published:2016-08-11

Abstract: As an important research content of surveillance video analysis, video keyframe extraction can effectively solve a series of problems such as the efficient storage and rapid access of video data. This paper proposes a surveillance video keyframe extraction method based on objects change. We firstly analyze objects change between different video frames, and then use the local maximum optimization to decompose an original surveillance video into some video clips. Finally, each keyframe is chosen from each video clip corresponding to feature center. On the basis of the object attribute, some redundant keyframes will be deleted to ensure a more compact keyframe set. The experimental results show that our method extracted video keyframes with low redundancy; meantime the contained content is very representative. In addition, our method has low complexity, which is suitable for online surveillance video analysis.

Key words: keyframe, curve of feature distance, local maximum optimization, redundant keyframe

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