%0 Journal Article
%T Analysis of the Errors in Locally Adaptive Wavelet Domain Wiener Filter and Image Denoising<br>小波域局部维纳滤波器估计误差分析及图像去噪
%A ( College of Electronic Information Engineering
%A South-Central University for Nationalities
%A Wuhan ( State Key Laboratory for Image Processing &
%A Intelligence Control
%A Huazhong University of Science &
%A Technology
%A Wuhan
%A <br>侯建华
%A 田金文
%A 柳健
%J 光子学报
%D 2007
%I 
%X 对小波域局部维纳滤波算法的估计误差进行了理论分析,推导了估计误差平方期望表达式,得到了一种观测系数局部方差估计的阈值.以此为基础,提出了一种小波域图像去噪算法.先对观测系数做阈值化处理,再进行局部自适应维纳滤波.实验结果表明,该方法提高了真实信号系数方差估计的准确度,在去噪性能上优于Mihcak等提出的LAWML算法.
%K Locally wiener filter
%K Estimation error
%K Wavelet coefficients
%K Image denoising<br>局部维纳滤波器
%K 估计误差
%K 小波系数
%K 图像去噪
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=9F6139E34DAA109F9C104697BF49FC39&aid=166FA42E42949517E6E421DF4446E5B3&yid=A732AF04DDA03BB3&vid=933658645952ED9F&iid=CA4FD0336C81A37A&sid=847B14427F4BF76A&eid=AC1578C6BB9EBDEF&journal_id=1004-4213&journal_name=光子学报&referenced_num=0&reference_num=16