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非局部均值滤波

于 2022-02-05 发布 文件大小:1.04 kB
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非局部均值滤波 图像中的像素点之间不是孤立存在的,某一点的像素与别处的像素点一定存在某种关联,可以概括为灰度相关性和几何结构相似性。这是均值滤波考虑的地方,但是我们还发现,相似像素并不局限于某个局部区域,如图像中的长边缘,结构纹理等,都是相似的。自然图像中含有丰富的重复冗余信息,所以可以采用能够描述图像结构特征的图像块在整个图像上寻求相似块

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