Patent ID: 7254254

Claim:
A method of evaluating the quality of an image comprising at least one zone, wherein the method comprises the steps of: determining at least one of a parameter associated with at least one zone and a parameter associated with a distribution pattern of sampling points within the at least one zone, wherein the at least one parameter is determined based on at least one of the following: (1) a distance between an observer and the image, (2) a size of the image, and (3) a type of the image; delineating the at least one zone in the image, wherein the at least one zone is delineated based on the determined at least one parameter when the determined parameter is associated with the at least one zone, and wherein the at least one zone is delineated based on a predetermined parameter when the determined parameter is not associated with the at least one zone; disposing the sampling points within the at least one zone, wherein the sampling points are disposed based on the determined at least one parameter when the determined parameter is associated with the distribution pattern, and wherein the sampling points are disposed based on a predetermined parameter when the determined parameter is not associated with the distribution pattern; identifying data that indicates a position and an optical characteristic value of each of the sampling points within the at least one zone which are determined based at least on the at least one parameter; performing Fourier analysis on the data relevant to the at least one zone to obtain an image quality of the at least one zone; and determining the quality of the image based on the image quality of the at least one zone.