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高斯型点扩展函数估计及图像复原 被引量:2

Gaussian point spread function estimation and image restoration
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摘要 点扩展函数估计是图像复原的重要内容,目前还没有精确估计的算法。根据高斯型点扩展函数曲线的特点,提出了新的高斯型点扩展函数参数的估计方法。分析发现高斯型点扩展函数曲线中,存在着几个特征点,它们很好地表现在降质的图像傅里叶变换图像中,这几个点与扩展函数参数存在着一定的关系。根据这种关系推导出点扩展函数参数,从而达到图像复原的目的。实验结果表明,这种算法简单、精度较高,有一定的参考价值。 Point Spread Function (PSF) estimation,an essential part for image restoration,has no accurate estimation algorithm at present.According to the Gaussian point expansion function curve characteristic,a new Gaussian PSF accurate estimation algorithm is put forward.After analyzing in the Gaussian point expansion function curve,there has several points of interest,and good showing in degraded image.These points of interest and spread function parameter have certain relations.According to this kind of relations,the image restoration goal is achieved.The experimental result shows that the proposed algorithm has an accuracy rate, and is of reference value.
作者 付炜 刘志文
出处 《计算机工程与应用》 CSCD 北大核心 2007年第36期80-81,85,共3页 Computer Engineering and Applications
关键词 高斯型点扩展函数 特征点 图像复原 Gaussian point spread function points of interest image restoration
作者简介 付炜(1949-),男,博士,教授.主要研究方向:航空与航天遥感图像处理,资源环境信息系统设计与空间信息处理,计算机数字图像处理、模式识别与图像理解,图像通信、信息安全与计算机网络安全,计算机语音识别与自然语言理解; E-mail : awen300@yahoo.com.cn刘志文(1979-),男,硕士生,研究方向为图像处理与模式识别。
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  • 1RAFAEL C G, RICHARD E W. Digital Image Processing[ M ]. 2nd ed. Beijing: Pearson Education Asia Limited Publishing House of Electronics Industry, 2003.
  • 2Kundur D, Hatzinakos D. Blind image deconvolu-tion[J]. IEEE Signal Processing mag.,1996,13(3): 43-64.
  • 3Kundur D, Hatzinakos D. A novel Blind scheme for image restoration using recursive filtering[J]. IEEE Signal Processing Mag.,1998,26(2):375-390.
  • 4Xiong Y L, Shafer S. Depth from focusing and defocusing[C]. Proc. of IEEE Conf. on Computer Vision and Pattern Recognition, 1993.
  • 5Schechner Y, Kiryati N. Depth from defocus vs. stereo: How different really are they[C]. Proc. International Conf. on Pattern Recognition, 1998.
  • 6Elder J, Zucker S. Local scale control for edge detection and blur estimation[J]. IEEE Trans. Pattern Analysis and Machine Intelligence, 1998,20(7): 699-716.
  • 7Kayargadde V, Martens J B. Estimation of edge parameters and image blur from local derivatives[C]. Proceedings of IEEE International Workshop on Image Processing, Budapest, Hungary:Journal on Communications, 1994. 33-34.
  • 8Mallat S, Zhong S F. Characterization of signals from multiscale edges[J]. IEEE Trans. Pattern Analysis and Machine Intelligence, 1992, 14(7): 710-732.
  • 9Mallat S, Hwang W H. Singularity detection and processing with wavelets[J]. IEEE Trans. Information Theory, 1992, 38(8):617-643.
  • 10Mallat S. A wavelet tour of signal processing (2nd ed.)[M]. London:Academic Press, Oval Road, 1998.

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