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| A Mixed Noise Filter Based on Median-Fuzzy Technology |
| Wang Jian-yong;Zhou Xiao-guang; Liao Qi-zheng |
| School of Automation, Beijing University of Posts and Telecommunications, Beijing 100876, China |
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Abstract A new algorithm of mixed noise removal for digital image is presented combing median filter and fuzzy technology. The pixels of an image are divided into two sets: impulse noise points and pixels polluted by Gaussian noise. The min-max operator is used first. Then impulse noise is detected accurately by using image texture and removed by median filter. A detail-preserving fuzzy filter is adopted to reduce Gaussian noise contained in other pixels. Experiments show that the algorithm can remove mixed impulse and Gaussian noise efficiently while protecting image details.
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Received: 18 October 2004
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2006, Vol. 28 
