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| 基于灰阶熵的LCD动态背光调整 | |
| 引用本文： | 章小兵,刘波,王茹,董戴,韩江洪,吴华夏. 基于灰阶熵的LCD动态背光调整[J]. 液晶与显示, 2012, 27(2): 173-176 |
| 作者姓名： | 章小兵 刘波 王茹 董戴 韩江洪 吴华夏 |
| 作者单位： | 1. 安徽华东光电技术研究所国家特种显示工程中心,安徽芜湖241002;合肥工业大学计算机学院,安徽合肥230009;安徽工业大学电气信息学院,安徽马鞍山243000 2. 安徽华东光电技术研究所国家特种显示工程中心,安徽芜湖,241002 3. 安徽工业大学电气信息学院,安徽马鞍山,243000 4. 合肥工业大学计算机学院,安徽合肥,230009 |
| 基金项目： | 安徽省博士后基金(No.200902) |
| 摘 要： | 飞机中液晶显示屏上显示的一般是图形和数据,显示界面上有较大范围是暗场景。若采用传统液晶显示器恒定亮度的面光源,会造成不必要的电能消耗,且存在漏光现象导致图像的对比度下降,因此对液晶显示的背光源采用动态背光的控制。文章通过分析常见的平均值和最大值背光亮度提取方法,提出基于灰阶熵的LCD背光亮度调整方法。该方法既解决平均值法失真严重的问题,保证图像质量,同时相比于最大值法又减少功耗,达到降低功耗和保证图像质量的要求。 |
| 关 键 词： | 液晶显示器 动态背光 灰阶熵 |
| 收稿时间： | 2011-11-06 |
Dynamic Backlight Adaptation Based on Gray Entropy for LCD |
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| ZHANG Xiao-bing , LIU Bo , WANG Ru , DONG Dai , HAN Jiang-hong , WU Hua-xia. Dynamic Backlight Adaptation Based on Gray Entropy for LCD[J]. Chinese Journal of Liquid Crystals and Displays, 2012, 27(2): 173-176 | |
| Authors: | ZHANG Xiao-bing LIU Bo WANG Ru DONG Dai HAN Jiang-hong WU Hua-xia |
| Affiliation: | 1(1.National Special Display Engineering Center,Huadong Photoelectric Technique Institute of Anhui Province, Wuhu 241002,China, 2.School of Computer Science,Hefei University of Technology,Hefei 230009,China; 3.School of Electrical Engineering and Information,Anhui University of Technology,Ma Anshan 243000,China) |
| Abstract: | The display contents of LCD in airplanes are commonly figures and data.So a large scale of scene is dark.In conventional LCDs,the backlight is set to constant luminance regardless of the image which causes power waste and low contrast ratio.To circumvent this problem,dynamic backlight is investigated.By analyzing the conventional methods,the average method and the max method,a modulation algorithm based on gray entropy is proposed.The method not only solves the problem of serious distortion in the average method,but also reduces power consumption in comparison to the max method.Therefore,the proposed method achieves low power consumption and high image quality simultaneously. |
| Keywords: | liquid crystal display dynamic backlight gray entropy |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |