直方图- - -要注意的一点是任何图片中的光源(不管是头灯，路灯等等)会冲刷你的照片。

Histogram - One thing to watch out for is letting any light source in your image (whether it be headlights, street lights etc) washing out your image.

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首先对彩色图片进行灰度化，再采用直方图均衡化的方法来进行图片的预处理，以获得比较好的图像拼接效果。

First carries on the gradation to the colored picture, again USES the histogram equalizing the method to carry on the picture the pretreatment, obtains the quite good image splicing effect.

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