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基于邻域相关的自适应中值滤波算法

DOI: 10.3969/j.issn.1674-0696.2013.03.41, PP. 547-550

Keywords: 椒盐噪声,中值滤波,中值偏移,图像去噪,自适应性,salt&peppernoise,medianfilter,medianoffset,imagenoiseremoval,adaptability

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Abstract:

:?为改善图像效果,在对现有的椒盐噪声自适应中值滤波算法分析的基础上,提出了基于邻域相关的自适应中值偏移滤波算法。算法对自适应中值滤波算法的处理过程进行改进。当滤波窗口大于设定的最大值时,根据像素点邻域内的像素点灰度值分布在不同的区间,将像素点灰度值的复原分为偏大或偏小两种情况。受污染像素点的滤波输出值为偏移的中值,偏移的距离根据改进的自适应中值滤波算法运行时滤波窗口的大小来决定。从仿真结果可见:该算法滤波后的图像具有较高的峰值信噪比,对图像细节的保留能力和抑制椒盐噪声的能力都有一定的提高。

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