Dynamic Backlight Adaptation Based on Local Mean and Standard Deviation for LCD

ZHANG Xiao-bing; WANG Ru; DONG Dai; HAN Jiang-hong; WU Hua-xia

doi:10.3788/YJYXS20112605.0698

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Dynamic Backlight Adaptation Based on Local Mean and Standard Deviation for LCD

Imaging Technology & Image Processing | 更新时间：2020-08-12

- Dynamic Backlight Adaptation Based on Local Mean and Standard Deviation for LCD
- Chinese Journal of Liquid Crystals and Displays Vol. 26, Issue 5, Pages: 698-701(2011)
- 作者机构：
  
  1. 安徽华东光电技术研究所国家特种显示工程实验室,现代显示国家重点实验室培育基地,安徽芜湖,241002
  2. 合肥工业大学计算机学院,安徽合肥,230009
  3. 安徽工业大学电气信息学院,安徽马鞍山,243000
- 作者简介：
- 基金信息：
- DOI：10.3788/YJYXS20112605.0698
  CLC： TN27
- Received：20 May 2011，
  
  Revised：27 June 2011，
  
  Published Online：20 October 2011，
  
  Published：20 October 2011
- 稿件说明：
移动端阅览
章小兵, 王茹, 董戴, 韩江洪, 吴华夏. 基于局部均值和标准差的LCD动态背光调整[J]. 液晶与显示, 2011,26(5): 698-701

ZHANG Xiao-bing, WANG Ru, DONG Dai, HAN Jiang-hong, WU Hua-xia. Dynamic Backlight Adaptation Based on Local Mean and Standard Deviation for LCD[J]. , 2011,26(5): 698-701
章小兵, 王茹, 董戴, 韩江洪, 吴华夏. 基于局部均值和标准差的LCD动态背光调整[J]. 液晶与显示, 2011,26(5): 698-701 DOI： 10.3788/YJYXS20112605.0698.

ZHANG Xiao-bing, WANG Ru, DONG Dai, HAN Jiang-hong, WU Hua-xia. Dynamic Backlight Adaptation Based on Local Mean and Standard Deviation for LCD[J]. , 2011,26(5): 698-701 DOI： 10.3788/YJYXS20112605.0698.

摘要

为了在降低液晶显示器背光功耗的同时能够保持图像质量

提出了基于局部均值和标准差的LCD背光调制算法。该算法能有效降低低对比度和较暗区域的背光亮度

提高图像的对比度

并保证高对比度和较亮区域的图像质量。对背光信号进行了保值平滑处理

使每个区域与周围区域之间能够平滑过渡

整幅图像视觉上更加柔和。

Abstract

In order to cut down the power consumption of LCD backlight and maintain the image quality

a modulation algorithm based on Local Mean (LM) and Local Standard Deviation (LSD) is proposed. The algorithm can dim the luminance of backlight effectively in dark and low contrast blocks and maintain the image quality in the bright and high contrast blocks. Meanwhile

backlight signals are smoothed to ensure smooth transition between each region and its surrounding regions

which makes images downy on the vision.

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Keywords

references

李福文,金伟其,邵喜斌,等. 基于LED背光源区域控制的高动态范围液晶显示技进展[J]. 光学技术, 2009,35(6):835-839.[2] Seetzen H, Heidrich W, Stuerzlinger W, et al. High dynamic rRange display systems [J].ACM Transactions on Graphics, 2004, 23(3):760-768.[3] Lin Fangcheng, Huang Yibai,Liao Linyao, et al. Dynamic backlight gamma on high dynamic range LCD TVs [J].J. Display Technology, 2008,4(2): 139-146.[4] 刘艳中,郑学仁,陈建宾.基于图像CDF阈值的LCD-TV动态背光主亮度提取算法及硬件实现[J]. 液晶与显示, 2010,25(3):449-453.[5] Liao Linyao, Huang Yipai. Blur-mask approach for real-time calculation of light spreading function (LSF)on spatial modulated high dynamic range LCDs[J].J. Technology, 2010,6(4): 121-127.

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Related Institution

Changchun Changguang Zhiou Technology Co.， Ltd.

University of Chinese Academy of Sciences

Changchun Institute of Optics， Fine Mechanics and Physics， Chinese Academy of Sciences

Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology

Shenzhen JT Automation Equipment Co., Ltd.

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