Enhancement of Color Contrast Using Modified DCT Coefficients in High Chroma images
نویسندگان
چکیده
In this paper, we propose a post-processing technique developed for the improvement of color contrast in DCTcoded color images. The high frequency components caused by complex object parts are examined on DCT tables, and the correlations between luminance coefficient and Chrominance one in DCT domain are analyzed. By considering the information of relation, we modify Cb, Cr coefficients using weighted luminance DCT coefficients. Simulation results show that the method enhances color contrast in high color saturated region, and improves the visual quality.
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