高技术通讯（英文版）2008，Vol.14Issue(3)：276-281,6.
Parameter recognition for defocus blur image using cepstrum analysis
Parameter recognition for defocus blur image using cepstrum analysis
摘要
Abstract
Successful restoration of blurred images depends primarily on the knowledge about the degradation parameter.Defocus blur model in the frequency domain is characterized by concentric rings and the blur radius of the point spread function (PSF) can be identified conveniently in the frequency field for people by manual means rather than for computer.This paper introduces a practical method for computer to estimate the defocus blur parameter in cepstrum area.Fourier transform plays an intermediate role in the path to cepstrum domain.We suggest a weighted adjustment operation in the frequency domain and then convert it to the cepstrum field to increase the accuracy of recognition.关键词
point spread function (PSF)/defocus/blur/cepstmmKey words
point spread function (PSF)/defocus/blur/cepstmm分类
信息技术与安全科学引用本文复制引用
Zhou Qu,Yan Guozheng,Wang Wenxing..Parameter recognition for defocus blur image using cepstrum analysis[J].高技术通讯（英文版）,2008,14(3):276-281,6.基金项目
Supported by the National Natural Science Foundation of China (No.30570485). （No.30570485）
