1. A computing system for implementing image enhancement, comprising: an image input unit having capabilities of inputting normal image as perceived by a person with normal color perception and of inputting a colorblindness-simulative image as perceived by a colorblind person; an image difference area analyzing unit electrically connected to the image input unit to distinguish differences between the normal image and the colorblindness-simulative image, wherein the differences are converted into a difference image; an image color distribution adjusting unit electrically connected to the image input unit to equalize and enhance R, G and B channel images of the difference image, wherein the difference image is converted into an equalized image, and to convert the equalized image to a colorblindness-optimized image for a colorblind person so that color vision obtained by a colorblind person from the colorblindness-optimized image is substantially identical to that obtained by a person with normal color perception from the normal image; and an image output unit electrically connected to the image difference area analyzing unit and the image color distribution adjusting unit.