An Adaptive Median Filter for Image Denoising

Author(s):  
Chin-Chen Chang ◽  
Ju-Yuan Hsiao ◽  
Chih-Ping Hsieh
2012 ◽  
Vol 433-440 ◽  
pp. 2486-2490
Author(s):  
Kai Xie ◽  
Fen Zhang ◽  
Ying Zhou

Image denoising is a very important part in image pre-processing. Due to the problem, which the edge details in the denoised image easily lost with the increase of the template-window size, the image blurring is increased. This paper presents comprehensive analysis on the advantages and disadvantages of existing algorithms and proposes a new algorithm which is called as adaptive median filter algorithm. This algorithm combines the selected mask filter algorithm and median filtering algorithm together. Experimental results show that the algorithm can speed up and the image blurring can be reduced. It also gets a satisfactory effect on the high-density noise image.


2013 ◽  
Vol 373-375 ◽  
pp. 1155-1158
Author(s):  
Kang Yan ◽  
Zhong Yuan Zhang

The detection of hydrophobicity is an important way to evaluate the performance of composite insulator, which is helpful to the safe operation of composite insulator. In this paper, the image processing technology and Back Propagation neural network is introduced to recognize the composite insulator hydrophobicity grade. First, hydrophobic image is preprocessed by histogram equalization and adaptive median filter, then the image was segmented by Ostu threshold method, and four features associated with hydrophobicity are extracted. Finally, the improved Back Propagation neural network is adopted to recognize composite insulator hydrophobicity grade. The experimental results show that the improved Back Propagation neural network can accurately recognize the composite insulator hydrophobicity


2016 ◽  
Vol 53 (3) ◽  
pp. 031002
Author(s):  
王伟佳 Wang Weijia ◽  
于雪莲 Yu Xuelian ◽  
马文书 Ma Wenshu ◽  
周坤 Zhou Kun ◽  
赵文彬 Zhao Wenbin ◽  
...  

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