We can expand dynamic range using grey linear transformation, and make fine structures improved using enhanced high -pass filtering method.

灰度线性变换法能够加大图像动态范围，增强高通滤波法能够增强图像的精细结构。

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This paper gives a new arithmetic of the background filtration (enhanced simplification high-pass filtering).

提出一种新的背景滤除算法(增强型简化高通滤波)。

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