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Wavelet transform based gaussian point spread function estimation

  • Qing Chuan Tao*
  • , Xiao Hai He
  • , Hong Bin Deng
  • , Ying Liu
  • , Jia Zhao
  • *此作品的通讯作者
  • Sichuan University
  • Beijing Institute of Technology

科研成果: 书/报告/会议事项章节会议稿件同行评审

摘要

Point spread function (PSF) estimation, an essential part for image restoration, has no accurate estimation algorithm at present. Based on the wavelet theory, a new Gaussian PSF accurate estimation algorithm is put forward in this paper. Firstly, the blurred images are smoothed, and their noise is reduced. Secondly, wavelet with varied scales is transformed, after which the local maxima of the modulus of the wavelet are computed respectively. Thirdly, on the basis of the relation deduced in this paper among the local maxima of the modulus of the wavelet at different scales, Lipschitz exponent and variance, the variance of a Gaussian PSF is computed. The experimental result shows that the proposed algorithm has an accuracy rate as high as 95%, and is of great application value.

源语言英语
主期刊名Advances in Visual Computing - First International Symposium, ISVC 2005, Proceedings
出版商Springer Verlag
396-405
页数10
ISBN(印刷版)3540307508, 9783540307501
DOI
出版状态已出版 - 2005
已对外发布
活动1st International Symposium on Advances in Visual Computing, ISVC 2005 - Lake Tahoe, NV, 美国
期限: 5 12月 20057 12月 2005

出版系列

姓名Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
3804 LNCS
ISSN(印刷版)0302-9743
ISSN(电子版)1611-3349

会议

会议1st International Symposium on Advances in Visual Computing, ISVC 2005
国家/地区美国
Lake Tahoe, NV
时期5/12/057/12/05

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