Color gamut boundary optimization of wide gamut display devices

摘要

High-end monitors based on LCD technology increasingly address wide color gamut implementations featuring precise color calibration within a variety of different color spaces such as extended sRGB or AdobeRGB. Combining a Look-Up-Table method with linear interpolation in RGB component space using 3×3 matrix multiplication provides optimized means of tone curve adjustments as well as independent adjustment of device primaries. The proposed calibration method completes within several seconds compared to traditional color calibration procedures easily taking several minutes. In addition, the user can be given subjective control over color gamut boundary settings based on dynamic gamut boundary visualization. The proposed component architecture not only provides independent control over 8 color vertices but also enables adjustment in quantities of 10~(-4) of full amplitude range. User defined color patches can be adjusted manually while simultaneously tracking color gamut boundaries and visualizing gamut boundary violation in real time. All this provides a convenient approach to fine tuning tone curves and matching particular constraints with regard to user preferences, for example specific ambient lighting conditions, across different devices such a monitors and printers.