Color space transformation is to transform color space which are related to device, RUB and CMYK, to the color space which are not related to device, CLE L*ab*. And use L*a*b* color space to realize the transformation between each color spaces.

• 颜色空间转换是将与设备有关的RGB、CMYK颜色空间转换到与设备无关的CIE L~*a~*b~*颜色空间上，以L~*a~*b~*颜色空间为桥梁，实现各颜色空间之间的相互转换。