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http://dx.doi.org/10.5909/JEB.2012.17.1.81

A Rotation Angle Estimation Method Based on Phase of ART  

Lee, Jong-Min (Department of Electronics and Computer Engineering)
Kim, Whoi-Yul (Department of Electronics and Computer Engineering)
Publication Information
Journal of Broadcast Engineering / v.17, no.1, 2012 , pp. 81-94 More about this Journal
Abstract
Several methods which utilize the phase of Zernike moments (ZMs) to estimate the rotation angle have shown good performance in terms of accuracy. In this paper, we provides the performance comparison results of the existing rotation angle estimation methods based on ZMs and propose an extension of Revaud et al.'s method [1] which utilizes the phase of ZMs; the proposed method uses angular radial transform coefficients instead of ZMs and yields better performance than the ZMs based methods in terms of accuracy. A set of ART can describe angular variation of image more intensively than ZMs, it enables more accurate estimation of the rotation angle than ZMs. In the experiments, the proposed method outperforms ZMs based method. Comparisons were made in terms of the root mean square error vs. the coverage on MPEG-7 shape dataset.
Keywords
ART; Zernike moment; phase; rotation angle estimation;
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