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Proceedings Paper

Summarizing motion contents of the video clip using moving edge overlaid frame (MEOF)
Author(s): Tianli Yu; Yujin Zhang
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Paper Abstract

How to quickly and effectively exchange video information with the user is a major task for video searching engine's user interface. In this paper, we proposed to use Moving Edge Overlaid Frame (MEOF) image to summarize both the local object motion and global camera motion information of the video clip into a single image. MEOF will supplement the motion information that is generally dropped by the key frame representation, and it will enable faster perception for the user than viewing the actual video. The key technology of our MEOF generating algorithm involves the global motion estimation (GME). In order to extract the precise global motion model from general video, our GME module takes two stages, the match based initial GME and the gradient based GME refinement. The GME module also maintains a sprite image that will be aligned with the new input frame in the background after the global motion compensation transform. The difference between the aligned sprite and the new frame will be used to extract the masks that will help to pick out the moving objects' edges. The sprite is updated with each input frame and the moving edges are extracted at a constant interval. After all the frames are processed, the extracted moving edges are overlaid to the sprite according to there global motion displacement with the sprite and the temporal distance with the last frame, thus create our MEOF image. Experiments show that the MEOF representation of the video clip helps the user acquire the motion knowledge much faster and also be compact enough to serve the needs of online applications.

Paper Details

Date Published: 19 December 2001
PDF: 11 pages
Proc. SPIE 4676, Storage and Retrieval for Media Databases 2002, (19 December 2001); doi: 10.1117/12.451111
Show Author Affiliations
Tianli Yu, Tsinghua Univ. (China)
Yujin Zhang, Tsinghua Univ. (China)

Published in SPIE Proceedings Vol. 4676:
Storage and Retrieval for Media Databases 2002
Minerva M. Yeung; Chung-Sheng Li; Rainer W. Lienhart, Editor(s)

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