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Lightness problem considered one of the challenging fields in the image enhancement category. The power membership function based on a fuzzy logic algorithm is developed within this paper to enhance lightness in the color images. The suggested algorithm depends on nonlinear power function to enhance image contrast. The suggested algorithm compared with other algorithms such as fuzzy logic (square method), fuzzy logic (cubic method), Histogram Equalization and Multi-Scale Retinex. Different criteria used to evaluate the performance of the presented algorithm like Mean Square Error in the Saturation (MSES), Mean Square Error in the Hue (MSEH), nature image quality Evaluator and entropy. The evaluated methods show that the suggested algorithm improved the lightness and contrast batter than the other methods.

Lightness Enhancement by Fuzzy Logic Depending on Power Membership Function