[1]刘璐,尹涵春,夏军,等.改变LCD显示图像属性的γ校正方法[J].东南大学学报(自然科学版),2008,38(6):955-959.[doi:10.3969/j.issn.1001-0505.2008.06.004]
 Liu Lu,Yin Hanchun,Xia Jun,et al.γ correction methods for changing image attributes on LCD[J].Journal of Southeast University (Natural Science Edition),2008,38(6):955-959.[doi:10.3969/j.issn.1001-0505.2008.06.004]
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改变LCD显示图像属性的γ校正方法()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
38
期数:
2008年第6期
页码:
955-959
栏目:
电磁场与微波技术
出版日期:
2008-11-20

文章信息/Info

Title:
γ correction methods for changing image attributes on LCD
作者:
刘璐 尹涵春 夏军 葛书 秦少玲
东南大学电子科学与工程学院, 南京 210096
Author(s):
Liu Lu Yin Hanchun Xia Jun Ge Shu Qin Shaoling
School of Electronic Science and Engineering, Southeast University, Nanjing 210096, China
关键词:
视觉感知 图像属性 LCD γ校正 亮度均匀性
Keywords:
visual perception image attribute liquid crystal display γ correction luminance uniformity
分类号:
TN873.93
DOI:
10.3969/j.issn.1001-0505.2008.06.004
摘要:
测量了LCD屏上均匀分布的25点的灰度与亮度关系曲线,计算了25点红、绿、蓝三色的γ值.在改变图像属性量值的图像处理中用插值法对全屏像素点进行了γ校正,并用亮度插值及线性压缩对全屏进行了对称性补偿.另外,提出了用查表法进行γ校正的方法,测量和计算结果表明,该方法可提高图像属性改变量的准确性.比较了2种γ校正方法,分析其对图像处理的影响.采用γ校正的图像处理使图像属性能在小范围内作多种等级的改变,满足视觉感知的图像属性阈值研究的要求.
Abstract:
Based on the measurement of gray-level and luminance curve at 25 points symmetrically distributed on LCD(liquid crystal display), γ values of 25 points for red, green and blue are calculated and interpolated to all pixels for γ correction in image processing. Unsymmetry is also compensated by luminance interpolation and linear scaling. In addition, a look-up-table method is proposed for γ correction. The results of measurement and calculation indicate that it can improve the accuracy of changing image attribute. The two γ correction methods are compared and their effects on image processing are analyzed. As a result, image attributes can be changed to different levels with small distortion by the γ correction in image processing. It can be used to investigate the visual perceived threshold of image attribute.

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备注/Memo

备注/Memo:
作者简介: 刘璐(1964—),女,副研究员,liuluseu@seu.edu.cn.
基金项目: 国家重点基础研究发展计划(973计划)资助项目(2003CB314706)、高等学校学科创新引智计划(111计划)资助项目(B07027).
引文格式: 刘璐,尹涵春,夏军,等.改变LCD显示图像属性的γ校正方法[J].东南大学学报:自然科学版,2008,38(6):955-959.
更新日期/Last Update: 2008-11-20