色彩转移法为灰度图像上色。实现paper“Transferring color to grayscale image”, 通过纹理匹配，找出灰度图像与彩色图像之间的匹配区域，在对应区域进行颜色转移。压缩包内附函数说明。-Color to grayscale color transfer method. To achieve paper " Transferring color to grayscale image" , by texture matching, gray imag