A novel starting-point-independent wavelet coefficient shape matching

Shuo Hu; Ming Zhu; Chuan Wu; Hua-jun Song

doi:10.1117/12.668294

20 January 2006 A novel starting-point-independent wavelet coefficient shape matching

Shuo Hu, Ming Zhu, Chuan Wu, Hua-jun Song

Proceedings Volume 6027, ICO20: Optical Information Processing; 60272M (2006) https://doi.org/10.1117/12.668294
Event: ICO20:Optical Devices and Instruments, 2005, Changchun, China

Abstract

In many computer vision tasks, in order to improve the accuracy and robustness to the noise, wavelet analysis is preferred for the natural multi-resolution property. However, the wavelet representation suffers from the dependency of the starting point of the sampled contour. For overcoming the problem that the wavelet representation depends on the starting point of the sampled contour, the Zernike moments are introduced, and a novel Starting-Point-Independent wavelet coefficient shape matching algorithm is presented. The proposed matching algorithm firstly gains the object contours, and give the translation and scale invariant object shape representation. The object shape representation is converted to the dyadic wavelet representation by the wavelet transform. And then calculate the Zernike moments of wavelet representation in different scales. With respect to property of rotation invariant of Zernike moments, consider the Zernike moments as the feature vector to calculate the dissimilarity between the object and template image, which overcoming the problem of dependency of starting point. The experimental results have proved the proposed algorithm to be efficient, precise, and robust.

Citation Download Citation

Shuo Hu, Ming Zhu, Chuan Wu, and Hua-jun Song "A novel starting-point-independent wavelet coefficient shape matching", Proc. SPIE 6027, ICO20: Optical Information Processing, 60272M (20 January 2006); https://doi.org/10.1117/12.668294

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