Patent ID: 6625305
Filing Date: 2003-09-23
Classification: G06T,H04N

Abstract:
A method for operating a data processing system to generate a second image from a first image, said first image comprising a two-dimensional array of pixel values, each of said pixel values corresponding to the light intensity in one of a plurality of spectral bands at a location in said first image, and said second image comprising a second two-dimensional array of color vectors, each of said vectors having a light intensity value for each of said spectral bands, there being one such vector corresponding to each location having a pixel value in said first image, one component of said vector being equal to said pixel value in said first image at that location, said method comprising the steps of:providing an estimate for each component that is not equal to one of said pixel values from said first image for each vector; and generating an updated estimate for each of said estimates by optimizing a weighted sum of a first function that measures the degree of roughness of said second image and a second function that measures the degree to which said vectors change direction between neighboring locations in said second image.