Optimal threshold determination for multiscale product in wavelet denoising

Jinli Meng, Quan Pan, Hongcai Zhang

科研成果: 书/报告/会议事项章节会议稿件同行评审

6 引用 (Scopus)

摘要

The main difficulty in multiscale product thresholding is to determine a proper threshold. In this paper, a hard thresholding function applied to multiscale product is contructed in the product form of shrinkage coefficient function and wavelet coefficients. This function is infinite-order differentiate with respect to wavelet coefficient, and can adaptively shrink wavelet coefficient in the neighborhood of the threshold. Furthermore, minimizing the Stein unbiased risk estimate (SURE) based on the thresholding function, the optimal threshold value is obtained in the mean square error (MSE) sense. In simulations to denoise multiple classic noisy signals, the traditional multiscale product coefficient thresholding is improved through using our optimal threshold.

源语言英语
主期刊名ISCIT 2005 - International Symposium on Communications and Information Technologies 2005, Proceedings
570-573
页数4
DOI
出版状态已出版 - 2005
活动ISCIT 2005 - International Symposium on Communications and Information Technologies 2005 - Beijing, 中国
期限: 12 10月 200514 10月 2005

出版系列

姓名ISCIT 2005 - International Symposium on Communications and Information Technologies 2005, Proceedings
II

会议

会议ISCIT 2005 - International Symposium on Communications and Information Technologies 2005
国家/地区中国
Beijing
时期12/10/0514/10/05

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