全彩Mini-LED商业大屏显示的彩色管理  

Color management of full-color Mini-LED commercial large screen display

作　　者：薛治天 吕国强[2,3] 杜刚 XUE Zhi-tian;LYU Guo-qiang;DU Gang(School of Electronic Science&Applied Physics,Hefei University of Technology,Hefei 230009,China;National Engineering Lab of Special Display Technology,National Key Lab of Advanced Display Technology,Academy of Photoelectric Technology,Hefei University of Technology,Hefei 230009,China;School of Instrumentation and Opto-Electronics Engineering,Hefei University of Technology,Hefei 230009,China)

机构地区：[1]合肥工业大学电子科学与应用物理学院,安徽合肥230009 [2]合肥工业大学特种显示技术国家工程实验室现代显示技术省部共建国家重点实验室光电技术研究院,安徽合肥230009 [3]合肥工业大学仪器科学与光电工程学院,安徽合肥230009

出　　处：《液晶与显示》2021年第3期448-455,共8页Chinese Journal of Liquid Crystals and Displays

基　　金：安徽省科技重大专项(No.2019b05050001)。

摘　　要：21世纪初商业显示逐步发展成为一个独立的行业,为了提升广色域全彩Mini-LED商业显示所呈现出的视觉效果,针对当前Mini-LED拼接屏颜色还原效果不佳、色差较大且价格高昂等问题,提出了一种应用于Mini-LED商业显示的色域映射方法。该方法基于Mini-LED的显示特性文件,通过查找表与四面体插值运算对其进行色域映射,再根据Mini-LED拼接屏对不同颜色特征的还原效果与表达能力之间的差异对查找表进行优化,改善了映射精度、映射时间以及资源消耗之间的平衡。实验结果表明:Mini-LED显示在进行色域映射后的最大亮度损失约为3.5%,像素光强均匀性由8.2%降至4.9%,色差由2.2ΔE降至1.3ΔE,证明该方法对全彩Mini-LED商业显示在像素光强均匀性、色差等方面均有较好的矫正效果,同时在视觉观测下的效果也有一定的提升。At the beginning of the 21st century,commercial display has gradually developed into an independent industry.In order to improve the visual effects presented by wide color gamut full-color Mini-LED commercial display,to solve the problems of the poor color reproduction effect,large color difference and high price of the current Mini-LED splicing screen,a color gamut mapping method applied to Mini-LED commercial display is proposed.This method is based on the display characteristic file of Mini-LED,and the color gamut is mapped by the method of look-up table and tetrahedral difference.Then,according to the difference between the reduction effect and expression ability of different color features between Mini-LED splicing screens,the lookup table is optimized,and the balance of the mapping accuracy,mapping time and resource consumption is improved.The experimental results show that the maximum brightness loss of Mini-LED display after color gamut mapping is about 3.5%,and the uniformity of pixel intensity decreased from 8.2%to 4.9%,the color difference is reduced from 2.2ΔE to 1.3ΔE,which proves that this method has a good correction effect for the full-color Mini-LED commercial display in pixel intensity uniformity,chromatic aberration and other aspects,meanwhile the effect under visual observation is also improved to a certain extent.

关 键 词：色域映射 商业显示 全彩Mini-LED 色差矫正 

分 类 号：TN383.1[电子电信—物理电子学]