Hue-Preserving Unsharp-Masking for Color Image Enhancement
Zihan YU, Kiichi Urahama · IEICE Transactions on Information and Systems · 2014
We propose an unsharp-masking technique which preserves the hue of colors in images. This method magnifies the contrast of colors and spatially sharpens textures in images. The contrast magnification ratio is adaptively controlled. We show by experiments that this method enhances the color tone of photographs while keeping their perceptual scene depth.