矩阵背光时序彩色显示中背光分区数与色彩分裂现象的关系探究  

Research on Relationship between Color Breakup and Backlight Division Number for LPD Algorithm

作　　者：汤景浪 张宇宁[1] 王坚[1] TANG Jinglang;ZHANG Yuning;WANG Jian(Joint International Research Laboratory of Information Display ~ Visualization, School of Electronic Science and Engineering, Southeast University, Nanjing, 210096, CHN)

机构地区：[1]东南大学电子科学与工程学院教育部信息显示与可视化国际合作联合实验室,南京210096

出　　处：《光电子技术》2018年第1期14-18,31,共6页Optoelectronic Technology

基　　金：中国博士后科学基金资助项目(20080430096)

摘　　要：利用矩阵式LED背光,局域基色去饱和算法根据图像局部内容降低基色的饱和度,从而降低子场图像之间的色差,抑制色彩分裂现象。本文主要研究了局域基色去饱和算法中色彩分裂现象与背光分区数之间的关系。结果表明:背光分区数越多,图像色彩分裂现象抑制作用越显著,但在权衡背光系统成本与图像画质的前提下,当背光分区数为496,该背光分区数下色彩分裂显著点数占背光分区数为1×1下色彩分裂显著点数的比例降至20%,有效抑制了色彩分裂现象,大大提升了图像画质。A light-emitting diodes（LEDs）matrix backlight can be used to suppress the perceived color breakup by controlling the backlight temporally and spatially.The backlight colors could be locally desaturated according to the local image content,so the color difference between fields is reduced and the perceived color breakup is suppressed.In this paper,the relationship between color breakup and backlight division number for LPD algorithm is investigated.After weighing the cost of the backlight system as well as image quality,the results indicate that a 496 resolution of LEDs matrix is reasonable to greatly enhance image quality,when the proportion of distorted pixels（MOS 〉2.5）on backlight is limited to 20%.

关 键 词：时序彩色显示 发光二极管背光 色彩分裂 

分 类 号：TN141[电子电信—物理电子学]