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| A DIFFERENCE-FILTERING WAY TO SMOOTHING IMAGE NOISE |
| Wang SiXian;Zeng Falong |
| The Institute of Image and Information Technology,Wuhan University,Wuhan 430072 |
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Abstract Noise occurring in image generation and communication affects image quality.As a rule,median filtering or weighting smoothing is used to dwindle noise.But those ways can keep limited image details,some more value information also dwindles.This paper proposes a difference-filtering way to solve this problem.It is very important in remote sensing and medicine.
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Received: 23 September 1998
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2000, Vol. 22 
