A METHOD OF PROCESSING IMAGE DATA REPRESENTING AN IMAGE OF A SCENE TO GENERATE AN ESTIMATE OF NOISE PRESENT IN THE IMAGE DATA

摘要

A method of processing image data representing an image of a scene to generatean estimate of noise present in the image data. The method comprisesevaluating a function for different values of said estimate, said functiontaking as input an estimate of said noise, and determining an estimate of saidnoise for which said function has an optimum value.