Color image restoration with anti-alias

Abstract

A video signal is produced from a color imaging array of the type having luminance elements of a first color (typically green) and chrominance elements of second and third colors (typically red and blue). The video signal processing includes, for each element of the second color, estimating a chrominance value of the third color as a function of the actual chrominance value of that element, the local neighborhood of actual chrominance values of the third color, and an anti-aliasing control value derived from the local neighborhood of actual luminance values and actual third color chrominance values. In preferred forms, a similar estimation of the second color at each third color element is performed.