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| Regularized Possibilistic Linear Models Based Adaptive Filter for Image Restoration |
| GE Hong-Wei, WANG Shi-Tong |
| School of Information Technology, Jiangnan University, Wuxi 214122 |
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Abstract Median filter is widely used to remove impulsive noise but it distorts the fine structure of signals. To improve the median filter, an adaptive filter controlled by regularized possibilistic linear models is proposed. The proposed filter achieves good results through a summation of the input signal and the output of median filter. The weights are set based on regularized possibilistic linear models according to the states of the input signal sequence. The experimental results of image denoising show this filter effectively suppresses impulsive noises and simultaneously preserves image details. Moreover, the proposed filter has excellent robustness to various percentages of impulse noise in the testing examples.
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Received: 28 July 2008
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2009, Vol. 22 
