LED显示屏色域边界的快速计算  

Fast Calculation of Color Gamut Boundary for LED Display Panel

作　　者：宋超[1,2] 王瑞光[1] 陈宇[1] 邓意成[1,2] 

机构地区：[1]中国科学院长春光学精密机械与物理研究所,吉林长春130033 [2]中国科学院大学,北京100049

出　　处：《发光学报》2013年第7期924-929,共6页Chinese Journal of Luminescence

基　　金：国家科技支撑计划(2009BAE7373B00)资助项目

摘　　要：为了快速计算出LED显示屏的色域边界,提出一种迭代求解映射线与色域边界交点进而拟合每个色相面内色域边界的算法。首先根据LED显示的色度学原理给出了颜色是否在LED显示屏色域内的判断方法。然后在CIELAB均匀颜色空间中,分析了迭代算法的原理,确定了迭代计算初始值,并进行了计算精度和速度分析。最后以D65为参照,在等色相面内进行了LED显示屏色域边界的拟合实验及色差分析。实验结果表明:11次迭代运算后,拟合色域边界已非常光滑,每条映射线上的色域边界点真实值和计算值最大色差仅为0.23。与插值类计算方法相比,最大色差值和计算速度分别降低和提高了一个数量级。本文算法在计算精度和速度上能够满足对LED显示屏进行色域分析和与其他显示设备进行色域映射的要求。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.

关 键 词：LED显示屏 色域边界 迭代算法 

分 类 号：O482.31[理学—固体物理]