LED显示屏色域边界的快速计算

Abstract

In order to fast acquire the gamut boundary of a LED display panel,an iterative method was proposed for the calculation of intersections between mapping lines and the gamut boundary,which was further used to get the fitting gamut boundary in each hue plane.Firstly,the judgment method if a color was in the LED display panel color gamut was supplied based on the colorimetric principles of LED display.And then,in the CIELAB uniform color space,it analyzed the iteration principle,determined the initial values for iteration,and carried out the analysis of calculation precision and speed.Finally,with D65 as reference,a LED display panel boundary fitting experiment and its color difference analysis were carried out in the same hue plane.Experiment result shows that the fitting boundary is very smooth after 11 iterations,and the maximum color difference between the true value and calculated value of the gamut boundary point on every mapping line is only 0.23.Compared with the interpolation methods,the maximum color difference is decreased and calculation speed is increased by an order of magnitude respectively.The method suggested could meet the needs of gamut analysis and gamut mapping with other display devices for the LED display panel in both the calculation precision and speed.