Since the human eye to distinguish color of gray is much higher than the resolving power, it will be gray-scale images into color images that can improve the discriminability of image detail.

• 由于人眼对彩色的分辨能力远远高于对灰度的分辨能力，所以将灰度图像转化成彩色图像表示，就可以提高对图像细节的辨别力。