中值滤波器是一种非线性滤波器，具有良好的边缘保持特性。

Median filter is a kind of nonlinear filters, it has good abilities of keeping edge.

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中值滤波是一种非线性滤波方法。

Median filtering is a nonlinear filtering method.

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中值滤波技术是一种在去除噪声的同时能较好保护图像边缘细节的非线性技术，在图像增强和恢复等领域中得到了广泛的应用。

Median filter technology is a non-linear technology that can preserve image edge while removing noise. It is used in many fields widely, e. g. image enhancing and restoration.

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