在灰度变换里涉及到灰度变换处理，窗口变换处理，分段线性变换处理，灰度分析均衡化处理，灰度匹配处理；投影法中涉及到水平投影和纯直投影；直方图显示中涉及到原图直方图，变换后直方图，及其R、G、B直方图统计等，是入门的不错的选择，值得-in gray transform Lane involving gray transform, the window transform, piecewise linear transformation, Analysis of gray balance, match