One method is derived from the histogram equalization technique and automatically determines the color spectra of geo- physical maps.

一种方法借鉴了直方图平滑化的思想，应用于位场彩色影像的色谱的自动确定。

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To better understanding the weld image, the histogram equalization method was used aiming at enlarging the difference between groove and other area.

运用直方图均衡化方法强化坡口与非坡口的差别，增加焊缝图像的理解性。

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The histogram equalization can enhance the contrast by redistributing the gray levels, it has the drawback that it reduces the information in the processed image.

直方图均衡可以使图像灰度分布接近均匀，提高图像对比度，但图像的信息量会有一定程度的损失。

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