Patent ID: 6151418
Filing Date: 2000-11-21
Classification: G06T,H04N

Abstract:
A method for displaying an image in a viewing area having viewing conditions, comprising the steps of:producing a source half-tone image composed of a plurality of individual picture elements;allocating respective source grayscale values to all of said picture elements for obtaining source grayscale values for an entirety of said source half-tone image;predetermining a plurality of combinations of brightness values and contrast values which produce an artifact free image and storing said combinations, as stored combinations;setting a brightness value dependent on said viewing conditions, as a set brightness value, and conducting a framing mask operation on each of said source grayscale values for producing modified grayscale values from each of said source grayscale values using only said set brightness value and said stored combinations; andfeeding said modified grayscale values to a display device for displaying an artifact-free modified grayscale value image corresponding to said source half-tone image.