[1]王振东,桂宇琛,孙 威,等.基于多方向加权的小波域维纳滤波改进算法[J].西华师范大学学报(自然科学版),2017,38(02):222-226.[doi:DOI:10.16246/j.issn.1673-5072.2017.02.019]
 WANG Zhendonga,GUI Yuchena,SUN Weib,et al.Improved Wavelet Domain Wiener Filter Based on Multidirection Weighted[J].Journal of China West Normal University(Natural Sciences),2017,38(02):222-226.[doi:DOI:10.16246/j.issn.1673-5072.2017.02.019]
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基于多方向加权的小波域维纳滤波改进算法()
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《西华师范大学学报(自然科学版)》[ISSN:1673-5072/CN:51-1699/N]

卷:
38
期数:
2017年02期
页码:
222-226
栏目:
出版日期:
2017-06-20

文章信息/Info

Title:
Improved Wavelet Domain Wiener Filter Based on Multidirection Weighted
作者:
王振东桂宇琛孙 威马宏亮
(安庆师范大学 a.物理与电气工程学院;b.数学与计算科学学院,安徽 安庆246133)
Author(s):
WANG ZhendongaGUI YuchenaSUN WeibMA Honglianga
(a.College of Physics and Electrical Engineering;b.School of Mathematics and Computing Science,Anqing Normal university,Anqing Anhui 246133,China)
关键词:
多方向加权小波域混合噪声维纳滤波峰值信噪比
Keywords:
multidirection weightedwavelet domainmixed noisewiener filteringpeak signal to noise ratio
分类号:
TP391
DOI:
DOI:10.16246/j.issn.1673-5072.2017.02.019
文献标志码:
A
摘要:
针对传统维纳滤波算法在处理图像非边界区域效果不佳的问题提出了一种改进算法,进一步提高了输出图像的峰值信噪比。算法对输入的原始图像进行小波分解,然后计算出低频近似矩阵中沿待处理子块中心像素的k个方向祛除极值后模板的方差,以这些方差的倒数作为权重,对k个模板剩余像素灰度的均值进行加权来作为相应位置的输出灰度值。实验结果表明,当方向数k取值越大时,该算法能有效提高对不同比例混合噪声图像的滤波效果,输出峰值信噪比增益较现有算法达到0.25~0.4dB。同时算法能够满足实时处理的需求,可在一般电子类消费产品用于抑制图像中混合噪声。
Abstract:
For the poor performance of the traditional wavelet domain wiener filtering algorithm on the nonboundary region,an improved new algorithm is suggested to further increase the PSNR(peak signal to noise ratio) value of output image.The algorithm uses the wavelet to decompose the input original image,and then calculates the variance of the template without extreme value from k kinds of directions of the sub block center pixel in the low frequency approximation matrix.By using the reciprocal of these variance as weight,weighted average of the remaining pixels of the template comes as the output gray value of the corresponding position.The experimental results show that this algorithm can effectively improve the filtering effect of mixed noise image in different proportion when k has a high value,and the PSNR value of the output images is increased by 0.25 ~ 0.4dB than that of other similar methods.Meanwhile,the processing speed of the algorithm can meet the needs of realtime requirements,and be used to suppress mixed noise in general electronic consumer products.

备注/Memo

备注/Memo:
收稿日期:2016-12-19
基金项目:国家自然科学基金项目(11604002,51607004)
作者简介:王振东(1992—),男,安徽枞阳人,硕士研究生,主要从事为图形图像处理研究。
通信作者:马宏亮(1987—),男,山东济宁人,博士,讲师,主要从事激光与光谱分析和数字图像处理研究。E-mail:hlgnma@foxmail.com
更新日期/Last Update: 2017-06-20