| Dichromats recognize colors using two out of three cone cells; L, M, and
    S. For example, red-green color blinds cannot distinguish the color between
    red, yellow, and green. To extend the ability of dichromats to recognize
    the color difference, we propose a method to expand the color difference
    when observed by dichromats. We analyze the color between the neighboring
    pixels in chromaticity space. In addition, we employ multiresolution analysis
    to form the Poisson equation. Our multiresolution analysis is non-linear
    depending on the saturation of each pixel’s color. Solving the multiresolution
    Poisson equation results in the color enhanced image. |