对彩色图像进行RGB到IHS变换，及IHS到RGB变换，提供三种变换算法，并能进行彩色图像灰度化，图像均为BMP格式，处理效果较好-For color image from RGB to IHS transform, and the IHS to RGB conversion, offers three transform algorithm, and can be colored gray image, image formats are BMP, better handling