Heterogeneity-projection hard-decision interpolation method for color reproduction

A heterogeneity-projection hard-decision interpolation method for color reproduction, comprising the following steps:

• (a) acquiring an image to form an original digital image, which consists of a plurality of pixels, including a plurality of red pixels, blue pixels and green pixels;
• (b) utilizing a heterogeneity-projection method to make projections of said original digital image along horizontal and vertical directions to form horizontal and vertical heterogeneity maps, and utilizing an image-restoration method to obtain optimized said horizontal and vertical heterogeneity maps;
• (c) utilizing said optimized horizontal and vertical heterogeneity maps to form horizontal, vertical and smooth subsets according to a hard-decision rule;
• (d) respectively performing horizontal, vertical and mean interpolations inside said horizontal, vertical and smooth subsets to reproduce all missing color elements;
• (e) utilizing current red color elements of said pixels and current blue color elements of said pixels to correct current green color elements of said pixels to obtain a color-corrected plane of green color elements;
• (f) utilizing said color-corrected plane of green color elements of said pixels to correct current red color elements of said pixels and current blue color elements of said pixels to obtain a color-corrected plane of red color elements and a color-corrected plane of blue color elements;
• and
• (g) repeating Steps (e) and (f) at least once to obtain a color-calibrated digital image;
• wherein each of the steps (b) through (g) are performed by an electronic apparatus.