该文件将一幅灰度图像转换为彩色图像，是基于图像的颜色空间密度图像，密度图像与原始的灰度图像越匹配，着色越好-This Program converts a gray image ro RGB image based on the colors of the destination image. The better the destination image match with the source　 gray image, the better the coloring will be.