一种高节能、低溢出率的动态调光算法

刘芬; 吕国强; 冯奇斌; 张喜条

doi:10.3788/YJYXS20142906.1083

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一种高节能、低溢出率的动态调光算法

液晶显示LED背光技术专栏 | 更新时间：2020-08-12

- 一种高节能、低溢出率的动态调光算法
- Dynamic dimming algorithm with high power-saving and low overflow rate
- 液晶与显示 2014年29卷第6期页码：1083-1089
- 作者机构：
  
  1. 合肥工业大学光电技术研究院,安徽合肥,230009
  2. 合肥工业大学特种显示技术教育部重点实验室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, 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
- 作者简介：
- 基金信息：
  
  安徽省2012科技计划资助项目（No.1206c0805007）()
- DOI：10.3788/YJYXS20142906.1083
  中图分类号： TN312.8;TN141.9
- 收稿日期：2014-06-20，
  
  修回日期：2014-07-14，
  
  网络出版日期：2014-07-30，
  
  纸质出版日期：2014-12-05
- 稿件说明：
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刘芬, 吕国强, 冯奇斌, 张喜条. 一种高节能、低溢出率的动态调光算法[J]. 液晶与显示, 2014,29(6): 1083-1089

LIU Fen, LV Guo-qiang, FENG Qi-bin, ZHANG Xi-tiao. Dynamic dimming algorithm with high power-saving and low overflow rate[J]. , 2014,29(6): 1083-1089
刘芬, 吕国强, 冯奇斌, 张喜条. 一种高节能、低溢出率的动态调光算法[J]. 液晶与显示, 2014,29(6): 1083-1089 DOI： 10.3788/YJYXS20142906.1083.

LIU Fen, LV Guo-qiang, FENG Qi-bin, ZHANG Xi-tiao. Dynamic dimming algorithm with high power-saving and low overflow rate[J]. , 2014,29(6): 1083-1089 DOI： 10.3788/YJYXS20142906.1083.

摘要

为了解决现有调光算法存在节能率低和溢出失真率高的问题，本文提出了一种高节能、低溢出率的动态调光算法。在综合考虑液晶显示器中背光亮度和像素亮度对最终显示效果存在非等效影响的实际情况下，将输入图像灰阶亮度作一定的预处理后再进行图像背光亮度计算，并且采用带有权重的线性调节方式来进行液晶像素的补偿计算。与常见调光算法的平均节能11.9%和平均溢出率12.34%相比，本文算法的平均节能可达22.15%，而溢出失真率降低至9.95%。在工程样机上对50幅图像进行了实际测试，与采用常见调光算法的显示器相比，采用本文调光算法的显示器在获得更高节能率的同时，保持了较好的显示质量，没有明显的亮度下降。

Abstract

To solve the problem of low power-saving and high overflow distortion rate of exist dimming algorithms

this paper proposes a dynamic dimming algorithm of high power-saving and low overflow rate.Considering that the backlight and pixels luminance have different influence on display effect in LCDs

input images are preprocessed to calculate the image luminance.The compensated pixel luminance is calculated by a weighted linear adjustment method.The simulation results of the proposed algorithm indicate that the average power-saving could reach 22.15% with overflow distortion of 9.95%

while the common algorithm only has 11.9% and 12.34%

respectively.The actual test is implemented on the prototype.Compared to common dimming algorithms

it can present good display quality without sensitive luminance decrease as well as higher power-saving rate.

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references

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