Patent ID: 6704443
Filing Date: 2004-03-09
Classification: H04N

Abstract:
A method of processing input signal samples representative of at least part of a color video image to produce legalised signal samples representative of a legal color version of said image, said method comprising the steps of;generating an over sampled version of the input signal samples by generating at least one extra signal sample for each base input signal sample, generating adjustment factors from said input signal samples, which when combined with said input signal samples have an effect of converting illegal color pixels of said color video image into legal color pixels; combining said adjustment factors with said input signal samples to produce said legalised color signal samples; decimating said legalised color signal samples to produce legalised signal samples having a sampling frequency corresponding to that of the base input signal samples; generating further adjustment factors in dependence upon said decimated legalised color signal samples, and combining said further adjustment factors with said decimated legalised color signal samples.