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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

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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。

Abstract

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%.

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中图分类号:TN141

DOI:10.19453/j.cnki.1005-488x.2018.01.002

所属栏目:研究与试制

基金项目:中国博士后科学基金资助项目(20080430096)

收稿日期:2017-09-27

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作者单位    点击查看

汤景浪: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
张宇宁: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
王坚: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

联系人作者:汤景浪(220151200@seu.edu.cn)

备注:汤景浪(1989-),男, 硕士研究生,主要从事电子显示背光方面的研究;

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【2】Silverstein L D, Roosendaal S J, Jak M J, et al. Hybrid spatial-temporal color synthesis and its applications[J]. Journal of the Society for Information Display, 2006, 14(1): 3-13.

【3】Langendijk E H. A novel spectrum-sequential display design with a wide color gamut and reduced color breakup[J]. Journal of the Society for Information Display, 2007, 15(4): 261-266.

【4】Zhang Y, Lin F, Langendijk E H, et al. A field-sequential-color display with a local-primary-desaturation backlight scheme[J]. Journal of the Society for Information Display, 2011, 19(3): 258-264.

【5】Zhang Y, Langendijk E H, Hammer M, et al. A new color breakup measure based on color difference between fields and contrast to the surrounding[J]. IEEE\/OSA Journal of Display Technology, 2012, 8(3): 145-153.

引用该论文

TANG Jinglang,ZHANG Yuning,WANG Jian. Research on Relationship between Color Breakup and Backlight Division Number for LPD Algorithm[J]. Optoelectronic Technology, 2018, 38(1): 14-18

汤景浪,张宇宁,王坚. 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[J]. 光电子技术, 2018, 38(1): 14-18

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