对给定的一幅RGB原始图像（如bmp格式），给出并显示该图的R、G、B单

色图像，绘制R、G、B图像各自的直方图；将RGB方式转换为HIS方式，再

给出并显示该图的H、I、S三个分量的图像-The RGB system is converted to a HIS way given an RGB original image (such as the bmp format), given and display the graph R, G, B monochrome images, draw R, G, and B image the respective histograms　, and then given and the image showing the three components of the graph H, I, S