Patent ID: 6833868
Filing Date: 2004-12-21
Classification: H04N

Abstract:
A method for determining at least two types of corrected aspect values for an aspect of a pixel, said pixel being embedded in a configuration of pixels, said method comprising the steps of:measuring at least one intensity value corresponding to said aspect for essentially each of the pixels of said configuration of pixels; calculating a first corrected intensity value for said pixel, in the calculation combining the measured intensity values of a set of pixels out of said configuration of pixels; decomposing the measured intensity value into said first corrected intensity value and a subaspect value; determining a second corrected intensity value for said pixel by combining said first corrected intensity value with the corrected subaspect value for said pixel obtained by analysing the measured intensity value in said first corrected intensity value and a subaspect value; and thereafter determining at least two types of corrected subaspect values for said pixel by combining the subaspect values of a set of pixels out of said configuration of pixels, wherein said aspect is the colour of said pixel and wherein said subaspect is the chrominance of said pixel, wherein the types of corrected values for said colour are Red, Green, and Blue corrected colour values for said pixel and wherein the types of corrected values of said chrominance are the corrected red, green and blue chrominance values, wherein said pixel has a colour filter for filtering substantially one colour type while measuring said intensity value.