Luminance Uniformity Evaluation for LED Display Panel Based on Gray Histogram

SONG Xin-li; ZHENG Xi-feng; LING Li-qing; HAO Ya-ru

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Luminance Uniformity Evaluation for LED Display Panel Based on Gray Histogram

Test & Evaluation | 更新时间：2020-08-12

- Luminance Uniformity Evaluation for LED Display Panel Based on Gray Histogram
- Chinese Journal of Liquid Crystals and Displays Vol. 24, Issue 1, Pages: 140-144(2009)
- 作者机构：
  
  1. 中国科学院长春光学精密机械与物理研究所, 吉林长春 130033, E-mail:xlsong5440_cn@sina.com
  2. 中国科学院研究生院北京,100039
- 作者简介：
- 基金信息：
- DOI：
  CLC： TP391.41
- Received：29 July 2008，
  
  Revised：02 January 1900，
  
  Published Online：20 February 2009，
  
  Published：20 February 2009
- 稿件说明：
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宋新丽;郑喜凤;凌丽清;郝亚茹;. 基于灰度直方图的LED显示屏亮度均匀性评估方法[J]. 液晶与显示, 2009,24(1): 140-144

SONG Xin-li;ZHENG Xi-feng;LING Li-qing;HAO Ya-ru;. Luminance Uniformity Evaluation for LED Display Panel Based on Gray Histogram[J]. 液晶与显示, 2009,24(1): 140-144
宋新丽;郑喜凤;凌丽清;郝亚茹;. 基于灰度直方图的LED显示屏亮度均匀性评估方法[J]. 液晶与显示, 2009,24(1): 140-144 DOI：

SONG Xin-li;ZHENG Xi-feng;LING Li-qing;HAO Ya-ru;. Luminance Uniformity Evaluation for LED Display Panel Based on Gray Histogram[J]. 液晶与显示, 2009,24(1): 140-144 DOI：

摘要

LED显示屏作为多媒体设施的显示终端

其亮度均匀性是影响显示屏显示效果的重要因素。如何对LED显示屏亮度均匀性进行客观准确的评估

是指导其研发和生产的关键。从分析LED显示屏显示特性出发

在现有LED显示屏亮度均匀性评估方法的基础上提出了基于灰度直方图的LED显示屏亮度均匀性评估方法。该方法通过CCD图像传感器获取LED像素亮度信息

结合数字图像处理技术和统计学规律

将LED像素灰度直方图拟合成正态分布曲线

利用标准差来评估LED显示屏亮度均匀性。实验证明该方法与视觉主观评价结果相一致

可有效评估LED显示屏亮度均匀性。

Abstract

As the terminal display of multimedia facilities

the luminance uniformity of LED display screen is an important factor for display quality. In order to guide the R&D and production of LED display panel

an object and exact evaluation for LED luminance uniformity is necessary. In this paper

on the basis of the exiting methods

an evaluation method based on gray histogram has been raised. In this method

the luminance information of LED display penal is obtained by CCD image sensor

with digital image processing technology and statistical knowledge

the histogram is fitted by normal distribution curve. The luminance uniformity is evaluated by standard deviation

and it is proved to be fitted with subjective method.

关键词

Keywords

references

. 南京洛普公司. LED显示屏测试方法(讨论修改稿) [J]. 现代显示, 2003,38:54-59.

. 马岩,胡君,吴伟平. 基于CCD成像单元仿真测试系统的实时性实现 [J]. 液晶与显示 , 2007,23(2):200-204.

. 刘文耀. 数字图像采集与处理 [M]. 北京:电子工业出版社,2007.

. 郑喜凤,宋新丽,刘贵华.一种基于区域最大值的LED显示屏亮度特征数据提取方法[J]. 液晶与显示, 2008,23(4):388-392.

. Gonzalez Rafael C. Digital Image Processing [M].阮秋琦等,阮宇智,译. 第二版,北京:电子工业出版社, 2004.

. 孙家抦. 遥感原理与应用 [M]. 武汉:武汉大学出版社,2003.

. 郭伟强,万志,常磊,等.面阵CCD信号采集系统的噪声抑制 [J]. 发光学报, 2008,29(1):204-208.

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