Improved display resolution of subsampled colour images using subpixel addressing

Subsampling based on subpixel addressing has been successfully applied to the problem of font rendering on an LCD. The increased horizontal resolution of the process makes otherwise fuzzy or aliased text look noticeably clearer, but the increased luminance resolution comes at the cost of chrominance aliasing. Also, the technique has only been applied to achromatic imagery. A new algorithm is presented which, based on a human perceptual model, successfully removes visible chrominance aliasing while retaining the invisible aliased components that contribute to enhanced resolution. The algorithm is applicable to both achromatic and natural colour imagery.