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Optical Engineering

Weighted root mean square approach to select the optimal smoothness parameter of the variational optical flow algorithms
Author(s): Zhigang Tu; Wolfgang Huerst; Wei Xie; Shufen Xiong; Qianqing Qin
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Paper Abstract

Variational methods are the most widely used approaches for optical flow computation. Many complicated algorithms have been proposed to improve their performance, yet little work has focused on how to select the optimal smoothness parameter λ of the variational optical flow algorithm itself. We present a weighted root mean square error method to automatically select the optimal smoothness parameter λ. Furthermore, we detail a scientific method for selecting the reference λ0 based on the quality of the frame, and propose an efficient brute-force approach to assign a group of λ, that will reduce the number of λ candidates to be tested by cutting down the search range. Experimental results validate the effectiveness of our methods.

Paper Details

Date Published: 26 March 2012
PDF: 10 pages
Opt. Eng. 51(3) 037202 doi: 10.1117/1.OE.51.3.037202
Published in: Optical Engineering Volume 51, Issue 3
Show Author Affiliations
Zhigang Tu, Wuhan Univ. (China)
Wolfgang Huerst, Utrecht Univ. (Netherlands)
Wei Xie, Wuhan Univ. (China)
Shufen Xiong, Huawei Technologies Co., Ltd. (China)
Qianqing Qin, Wuhan Univ. (China)

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