Please wait a minute...
FITEE
Front. Inform. Technol. Electron. Eng.  2010, Vol. 11 Issue (1): 36-44    DOI: 10.1631/jzus.C0910145
    
Improved switching based filter for protecting thin lines of color images
Chang-cheng WU, Chun-yu ZHAO*, Da-yue CHEN
School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
Improved switching based filter for protecting thin lines of color images
Chang-cheng WU, Chun-yu ZHAO*, Da-yue CHEN
School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
 全文: PDF(581 KB)  
摘要： The classical vector median filter (VMF) has been widely used to remove impulse noise from color images. However, since the VMF cannot identify thin lines during the denoising process, many thin lines may be removed out as noise. This serious problem can be solved by a newly proposed filter that uses a noise detector to find these thin lines and then keep them unchanged. In this new approach, the noise detection scheme applied on a current processed pixel is realized through counting the close pixels in its eight neighbor positions and the expanded window to see whether the current pixel is corrupted by impulse noise. Based on the previous outputs, our algorithm can increase the performance in detecting and canceling the impulse noise. Extensive experiments indicate that this approach can be used to remove the impulse noise from a color image without distorting the useful information.
关键词： Vector median filter (VMF);  Thin lines;  Impulse noise;  Color image    
Abstract: The classical vector median filter (VMF) has been widely used to remove impulse noise from color images. However, since the VMF cannot identify thin lines during the denoising process, many thin lines may be removed out as noise. This serious problem can be solved by a newly proposed filter that uses a noise detector to find these thin lines and then keep them unchanged. In this new approach, the noise detection scheme applied on a current processed pixel is realized through counting the close pixels in its eight neighbor positions and the expanded window to see whether the current pixel is corrupted by impulse noise. Based on the previous outputs, our algorithm can increase the performance in detecting and canceling the impulse noise. Extensive experiments indicate that this approach can be used to remove the impulse noise from a color image without distorting the useful information.
Key words: Vector median filter (VMF)    Thin lines    Impulse noise    Color image
收稿日期: 2009-03-12 出版日期: 2009-11-30
CLC:  TP317.4  
通讯作者: Chun-yu ZHAO     E-mail: zhaocy@sjtu.edu.cn
服务　　
把本文推荐给朋友
加入引用管理器
E-mail Alert
RSS
作者相关文章　　
Chang-cheng WU
Chun-yu ZHAO
Da-yue CHEN

引用本文:

Chang-cheng WU, Chun-yu ZHAO, Da-yue CHEN. Improved switching based filter for protecting thin lines of color images. Front. Inform. Technol. Electron. Eng., 2010, 11(1): 36-44.

链接本文:

http://www.zjujournals.com/xueshu/fitee/CN/10.1631/jzus.C0910145    或    http://www.zjujournals.com/xueshu/fitee/CN/Y2010/V11/I1/36

[1] Sahar Moghimi, Mohammad Hossein Miran Baygi, Giti Torkaman, Ehsanollah Kabir, Ali Mahloojifar, Narges Armanfard. Studying pressure sores through illuminant invariant assessment of digital color images[J]. Front. Inform. Technol. Electron. Eng., 2010, 11(8): 598-606.