航拍绝缘子图像的去模糊处理  

Deblurring Processing of Aerial Image on Insulator

作　　者：裴玉龙[1] 仝卫国[2] 李宝树[1] 

机构地区：[1]华北电力大学电气与电子工程学院,河北保定071003 [2]华北电力大学控制科学与工程学院,河北保定071003

出　　处：《电瓷避雷器》2010年第5期12-16,22,共6页Insulators and Surge Arresters

摘　　要：针对输电线路航拍图像中绝缘子的模糊图像,分别选用Lucy-Richardson复原法、最小二乘方复原法、盲解卷积复原法、维纳滤波复原法对原始模糊图像复原,并对各种复原结果进行了对比和分析,提出了改进的维纳滤波方法,即采用拉普拉斯算子对维纳滤波去模糊的图像进行线性锐化滤波处理,突出绝缘子的边缘信息,增强图像的轮廓特征,便于观察绝缘子的工作状态。最后引入灰度梯度向量模方和Gk′对复原后的去噪图像进行质量评价。结果表明,改进的维纳滤波方法提高了图像的清晰度,可以作为判别绝缘子故障的一种可行方法。For the blurred image of insulator based on aerial images,Lucy-Richardson,Least squares,Blind deconvolution and Wiener filtering is adopted respectively on the original blurred image,and all kinds of rehabilitation results is compared and analyzed,an improved Wiener filtering method is proposed,that is Laplacian is applied to carry out linearity sharpening filtering treating on Wiener filtering restored image,and strengthen the edge information of insulator and the contour feature of the image.Then the working state of the insulator can be easily observed.At last,the vector norm sum of image gray gradient and G k＇ is introduced to evaluate the restored image quality.The test results show that the improved Wiener filtering method can improve the image definition and can be a feasible method to distinguish insulator＇ s trouble accurately.

关 键 词：航拍图像 绝缘子 图像 模糊处理 复原 清晰度 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]