Improvement of PDP Image Quality by Using Adaptive Limited Grays Subfield Coding Method

ZHENG Xiao-qing; ZHANG Xiao-ning; LIANG Zhi-hu; LIU Chun-liang

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Improvement of PDP Image Quality by Using Adaptive Limited Grays Subfield Coding Method

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

- Improvement of PDP Image Quality by Using Adaptive Limited Grays Subfield Coding Method
- Chinese Journal of Liquid Crystals and Displays Vol. 26, Issue 6, Pages: 853-857(2011)
- 作者机构：
  
  西安交通大学电子物理与器件教育部重点实验室,陕西西安,710049
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN873
- Received：24 May 2011，
  
  Revised：14 July 2011，
  
  Published Online：20 December 2011，
  
  Published：20 December 2011
- 稿件说明：
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郑晓庆, 张小宁, 梁志虎, 刘纯亮. 采用自适应有限灰度级子场编码方法提高等离子体显示器的显示质量[J]. 液晶与显示, 2011,26(6): 853-857

ZHENG Xiao-qing, ZHANG Xiao-ning, LIANG Zhi-hu, LIU Chun-liang. Improvement of PDP Image Quality by Using Adaptive Limited Grays Subfield Coding Method[J]. , 2011,26(6): 853-857
郑晓庆, 张小宁, 梁志虎, 刘纯亮. 采用自适应有限灰度级子场编码方法提高等离子体显示器的显示质量[J]. 液晶与显示, 2011,26(6): 853-857 DOI：

ZHENG Xiao-qing, ZHANG Xiao-ning, LIANG Zhi-hu, LIU Chun-liang. Improvement of PDP Image Quality by Using Adaptive Limited Grays Subfield Coding Method[J]. , 2011,26(6): 853-857 DOI：

摘要

为了改善等离子体显示器的动态显示质量

在减轻动态假轮廓的同时提高灰度显示质量

提出了基于直方图均衡化的自适应有限灰度级子场编码方法。该方法首先对输入图像进行直方图均衡化

在灰度"均匀分布"的新直方图上

按子场的数目平均划分灰度区间

选取每个区间中间的灰度级作为预采样灰度级;然后将预采样灰度级按照直方图均衡化的反函数进行映射

得到采样灰度级和子场编码。为了达到更好的灰度显示效果

在累积式灰度编码中

依次限定单个子场编码为零

从而得到更多的显示灰度级。仿真实验结果表明

该方法能在动态假轮廓改善和灰度级表现能力之间取得平衡

在减轻动态假轮廓的同时弥补了"累积式"发光显示灰度级不足的问题

得到了较好的显示效果。

Abstract

To improve the dynamic and static image quality

a new adaptive limited grays subfield coding method based on histogram equalization was proposed. In this method

a new probability density distribution was obtained by image histogram equalization. The gray scales were divided uniformity according to the number of subfield

and the grays in middle of each sub-section as the pre-sample grays were selected. The sample grays and subfield coding were obtained through the inverse transformation of histogram equalization. A subfield was set to zero for one gray coding to get the better image quality. Simulation results show that the proposed method has the advantages of simple-accumulation and combination lighting modes. It can improve the dynamic false contrast and gray scales expression simultaneously.

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Keywords

references

Said A, Pearlman W. A new, fast, and efficient image codec based on set partitioning in hierarchical trees [J]. IEEE Transactions on Circuits and Systems for Video Technology, 1996, 6(6): 243-250.[2] Wheeler F W, Pearlman W A. SPIHT image compression without lists //IEEE Int. Conf. on Acoustics, Speech and Signal Processing(ICASSP2000),Istanbul:IEEE,2000,2047-2050.[3] Wu Yinhua, Jin Longxu,Tao Hongjiang. An improved fast parallel SPIHT algorithm and its FPGA implementation //The 2010 2nd International Conference on Future Computer and Communication,Wuhan:IEEE, 2010,1:191-195.[4] 徐勇,徐智勇,张启衡,等. 适于硬件实现的低复杂度图像压缩[J]. 光学精密工程, 2009,17(9):2262-2268[5] 孔繁锵, 李云松, 王柯俨,等. 基于码率预分配的JPEG2000自适应率控制算法 [J]. 电子与信息学报, 2009,31(1):66-70.[6] 何伟, 俞立, 董辉. 基于IWT图像压缩技术的LED同步显示系统设计[J]. 液晶与显示, 2009,24(2):262-267[7] 赵峰, 袁东风, 张海霞, 等. 多DSP图像压缩实时并行处理系统[J]. 光学精密工程, 2007,15(9):1451-1455.[8] 赵洁红, 孙文军, 孟忠,等. CCD遥感图像的小波分解特性及编码压缩[J]. 光学精密工程, 2004,12(2):205-210.

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创维集团研究院第一研究所,深圳 518106,E-mail: znn@mail.xjtu.edu.cn

西安交通大学电子物理与器件教育部重点实验室

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