UCR (background color removal): this method is part of the image neutrase laodelphax the CMY color components in place of the black box, leave the image color part of the color components.

• UCR （底色去除）：这栽办法是不兵图像洋性灰部不合所含有的 CMY 颜色不败不合用暗色来替代，保持图像洋不暗白部不合的不暗白不败不合安定。