opencv 读取图片，rgb格式变成 hsv格式图片，提取 h分量后图片，以及h分量的直方图图片。 -opencv read picture, rgb format into a format hsv picture, extraction component h after the picture, as well as the h-component histogram picture.

基于opencv和vc++的图像 处理程序-Opencv and vc++ based image processing program