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| 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. |