Patent ID: 7312799
Filing Date: 2007-12-25
Classification: G09G

Abstract:
1. A method of determining correct color gamma for a display device as driven by at least three primary color signals, comprising: providing a first user visual task on the display device, the first user visual task further providing a continuous-tone patch and a halftone pattern for two of the at least three primary color signals; luminance-matching to determine the respective gamma value for the two of the at least three primary color signals based on the first user visual task; providing a second user visual task on the display device, the second user visual task further providing a halftone gray patch and a continuous-tone grey patch while employing the determined gamma values from the luminance-matching step; and, grey-balancing to determine the respective gamma value for the remaining primary color signal of the at least three primary color signals based on the second user visual task.