OE Letters

Key frame extraction based on spatiotemporal motion trajectory

[+] Author Affiliations
Yunzuo Zhang, Ran Tao, Feng Zhang

Beijing Institute of Technology, School of Information and Electronics, Zhongguancun Street, Beijing 100081, China

Opt. Eng. 54(5), 050502 (May 08, 2015). doi:10.1117/1.OE.54.5.050502
History: Received March 26, 2015; Accepted April 16, 2015
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Abstract.  Spatiotemporal motion trajectory can accurately reflect the changes of motion state. Motivated by this observation, this letter proposes a method for key frame extraction based on motion trajectory on the spatiotemporal slice. Different from the well-known motion related methods, the proposed method utilizes the inflexions of the motion trajectory on the spatiotemporal slice of all the moving objects. Experimental results show that although a similar performance is achieved in the single-objective screen, by comparing the proposed method to that achieved with the state-of-the-art methods based on motion energy or acceleration, the proposed method shows a better performance in a multiobjective video.

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© 2015 Society of Photo-Optical Instrumentation Engineers

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Citation

Yunzuo Zhang ; Ran Tao and Feng Zhang
"Key frame extraction based on spatiotemporal motion trajectory", Opt. Eng. 54(5), 050502 (May 08, 2015). ; http://dx.doi.org/10.1117/1.OE.54.5.050502


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