一种运用抖动矩阵的LED显示屏图像增强处理算法

孙健哲; 郑喜凤; 徐子程; 程宏斌; 陈煜丰

doi:10.37188/CJLCD.2021-0192

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一种运用抖动矩阵的LED显示屏图像增强处理算法

图像处理 | 更新时间：2021-09-30

- 一种运用抖动矩阵的LED显示屏图像增强处理算法
- Image enhancement processing algorithm for LED display screens using dithering matrix
- 液晶与显示 2021年36卷第10期页码：1403-1411
- 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
  2.中国科学院大学, 北京 100049
  3.长春希达电子技术有限公司, 吉林长春 130103
  4.季华实验室, 广东佛山 528200
- 作者简介：
  
  [ "孙健哲(1991-), 男, 吉林长春人, 硕士研究生, 2015年于西安电子科技大学获得学士学位, 主要从事LED显示技术方面的研究。E-mail: 814962114@qq.com" ]
  [ "郑喜凤(1965-), 女, 黑龙江庆安人, 博士, 研究员, 2000年于中国科学院长春光学精密机械与物理研究所获得博士学位, 主要从事信号采集处理、信息显示、图像处理等方面的研究。E-mail: zhengxf@ccxida.com" ]
- 基金信息：
  
  吉林省与中国科学院科技合作高技术产业化专项(2020SYHZ0006);季华实验室科技研发项目(X190221TF190)
- DOI：10.37188/CJLCD.2021-0192
  中图分类号： TN27
- 收稿日期：2021-07-21，
  
  修回日期：2021-08-04，
  
  纸质出版日期：2021-10
- 稿件说明：
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孙健哲, 郑喜凤, 徐子程, 等. 一种运用抖动矩阵的LED显示屏图像增强处理算法[J]. 液晶与显示, 2021,36(10):1403-1411.

Jian-zhe SUN, Xi-feng ZHENG, Zi-cheng XU, et al. Image enhancement processing algorithm for LED display screens using dithering matrix[J]. Chinese journal of liquid crystals and displays, 2021, 36(10): 1403-1411.
孙健哲, 郑喜凤, 徐子程, 等. 一种运用抖动矩阵的LED显示屏图像增强处理算法[J]. 液晶与显示, 2021,36(10):1403-1411. DOI： 10.37188/CJLCD.2021-0192.

Jian-zhe SUN, Xi-feng ZHENG, Zi-cheng XU, et al. Image enhancement processing algorithm for LED display screens using dithering matrix[J]. Chinese journal of liquid crystals and displays, 2021, 36(10): 1403-1411. DOI： 10.37188/CJLCD.2021-0192.

摘要

为解决LED显示屏在低灰度条件下出现图像亮度损失、灰阶跳变等问题，提出一种运用抖动矩阵的LED显示屏低灰度图像增强处理算法。首先，根据LED显示原理和传统抖动算法图像增强原理，提出LED显示屏“小数灰度级”的概念，接着根据测试等相关手段获得使各像素点显示效果增强的“小数灰度级”数据，运用抖动矩阵在4帧图像中按照“误差最小原则”实现其相应的“小数灰度级”。然后，采用亚像素抖动技术进一步降低了画面抖动给人眼带来的闪烁感。最后，用Matlab软件对算法进行对比仿真，验证了算法的可行性与有效性。实验结果表明，该算法对LED显示屏低灰度级灰阶过渡不均匀现象有明显的改善效果，将灰度级10以下的灰度显示能力提升为原来的4倍，同时将LED显示屏的最小可控灰度级亮度变为原来的15%~25%，提升了LED显示屏的对比度。

Abstract

In order to solve the problems of image brightness loss and gray-level jump in low grayscale conditions of LED display screens

a low grayscale image enhancement processing algorithm for LED display screens using dither matrix is proposed. According to the principle of LED display and the image enhancement principle of traditional dithering algorithm

the concept of "decimal gray level" of LED display is proposed

and then the "decimal gray level" data that enhances the display effect of each pixel is obtained according to related methods such as testing. The dither matrix realizes its corresponding "decimal gray level" in accordance with the "principle of minimum error" in 4 frames of images. The sub-pixel dithering technology is used to further reduce the flicker caused by the image jitter to the human eyes. The algorithm was compared and simulated with Matlab software to verify the feasibility and effectiveness of the algorithm. The experimental results show that the algorithm has a significant improvement effect on the uneven transition of the low gray level of the LED display screen

and the gray level display ability of the gray level below 10 is increased to 4 times of the original. At the same time

the minimum controllable gray level brightness becomes 15%~25% of the original

which improves the contrast of the LED display.

关键词

Keywords

references

丁海涛 . 基于Micro LED发展现状及其技术研究 . 计算机产品与流通 , 2019 . ( 8 ): 106 https://www.cnki.com.cn/Article/CJFDTOTAL-WXXJ201908093.htm https://www.cnki.com.cn/Article/CJFDTOTAL-WXXJ201908093.htm .

H T DING . Research on the development and technology of micro LED . Computer Products and Circulation , 2019 . ( 8 ): 106 https://www.cnki.com.cn/Article/CJFDTOTAL-WXXJ201908093.htm https://www.cnki.com.cn/Article/CJFDTOTAL-WXXJ201908093.htm .

郑东吉 . LED显示屏技术分析与产业发展研究 . 无线互联科技 , 2017 . ( 15 ): 117 - 118 . DOI: 10.3969/j.issn.1672-6944.2017.15.053 http://doi.org/10.3969/j.issn.1672-6944.2017.15.053 .

D J ZHENG . Research and analysis on LED display technology and industry development . Wireless Internet Technology , 2017 . ( 15 ): 117 - 118 . DOI: 10.3969/j.issn.1672-6944.2017.15.053 http://doi.org/10.3969/j.issn.1672-6944.2017.15.053 .

徐子程 , 郭贵新 , 郑喜凤 , 等 . LED显示屏灯点定位排序法及应用 . 液晶与显示 , 2021 . 36 ( 4 ): 575 - 583 . DOI: 10.37188/CJLCD.2020-0278 http://doi.org/10.37188/CJLCD.2020-0278 .

Z C XU , G X GUO , X F ZHENG , 等 . Positioning and sorting method and application of LED display point . Chinese Journal of Liquid Crystals and Displays , 2021 . 36 ( 4 ): 575 - 583 . http://cjlcd.lightpublishing.cn/thesisDetails#10.37188/CJLCD.2020-0278&graphicAbstract=0 http://cjlcd.lightpublishing.cn/thesisDetails#10.37188/CJLCD.2020-0278&graphicAbstract=0 .

曹慧 , 郑喜凤 , 汪洋 , 等 . 超高清超高分辨率大尺寸LED显示器 . 液晶与显示 , 2021 . 36 ( 4 ): 566 - 574 . DOI: 10.37188/CJLCD.2020-0346 http://doi.org/10.37188/CJLCD.2020-0346 .

H CAO , X F ZHENG , Y WANG , 等 . Ultra high definition ultra-high resolution large size LED display . Chinese Journal of Liquid Crystals and Displays , 2021 . 36 ( 4 ): 566 - 574 . http://cjlcd.lightpublishing.cn/thesisDetails#10.37188/CJLCD.2020-0346&graphicAbstract=0 http://cjlcd.lightpublishing.cn/thesisDetails#10.37188/CJLCD.2020-0346&graphicAbstract=0 .

范学仕 , 唐茂洁 , 曾忠 . 基于OS-PWM算法的LED驱动芯片设计与实现 . 电子与封装 , 2018 . 18 ( 12 ): 30 - 36 . https://www.cnki.com.cn/Article/CJFDTOTAL-DYFZ201812007.htm https://www.cnki.com.cn/Article/CJFDTOTAL-DYFZ201812007.htm .

X S FAN , M J TANG , Z ZENG . Design and implementation for LED driver IC based on OS-PWM algorithm . Electronics and Packaging , 2018 . 18 ( 12 ): 30 - 36 . https://www.cnki.com.cn/Article/CJFDTOTAL-DYFZ201812007.htm https://www.cnki.com.cn/Article/CJFDTOTAL-DYFZ201812007.htm .

蔡宗达 , 孙康斌 , 王泓铭 . 小点间距显示屏常见问题与驱动芯片解决方案 . 电子科学技术 , 2014 . 1 ( 3 ): 354 - 359 . https://www.cnki.com.cn/Article/CJFDTOTAL-DKJS201403018.htm https://www.cnki.com.cn/Article/CJFDTOTAL-DKJS201403018.htm .

Z D CAI , K B SUN , H M WANG . LED driver IC solutions of fine pitch LED displays . Electronic Science & Technology , 2014 . 1 ( 3 ): 354 - 359 . https://www.cnki.com.cn/Article/CJFDTOTAL-DKJS201403018.htm https://www.cnki.com.cn/Article/CJFDTOTAL-DKJS201403018.htm .

王明龙. 液晶显示之基于五帧循环Fi-FRC像素抖动算法[D]. 上海: 上海交通大学, 2011.

WANG M L. 5-Frame cycle based Fi-FRC pixel dithering algorithm for TFT-LCD[D]. Shanghai: Shanghai Jiao Tong University, 2011. (in Chinese)

陈鹏飞, 杨城. 显示控制方法、装置和系统: 中国, 112614456A[P]. 2021-04-06.

CHEN P F, YANG C. Display control method, devices and system: CN, 112614456A[P]. 2021-04-06. (in Chinese)

陈若愚. AM-OLED图像数字半调算法研究[D]. 武汉: 华中科技大学, 2011.

CHEN R Y. Research of digital halftoning algorithm for AM-OLED image[D]. Wuhan: Huazhong University of Science and Technology, 2011. (in Chinese)

胡子辉. 一种提高微显示器分辨率的驱动方法研究与实现[D]. 湘潭: 湘潭大学, 2020.

HU Z X. Research and implementation of a driving method to improve the resolution of microdisplay[D]. Xiangtan: Xiangtan University, 2020. (in Chinese)

H M KIM , M RYU , J H J CHA , 等 . Ten micrometer pixel, quantum dots color conversion layer for high resolution and full color active matrix micro-LED display . Journal of the Society for Information Display , 2019 . 27 ( 6 ): 347 - 353 . DOI: 10.1002/jsid.782 http://doi.org/10.1002/jsid.782 .

X C FU , X C ZOU , J M LEI . Improved dithering algorithms and its circuit implementing for STN-LCD . The Journal of China Universities of Posts and Telecommunications , 2006 . 13 ( 4 ): 86 - 90 . DOI: 10.1016/S1005-8885(07)60040-5 http://doi.org/10.1016/S1005-8885(07)60040-5 .

Y H HONG , E K JUNG , S HONG , 等 . A novel micro-LED pixel circuit using n-type LTPS TFT with pulse width modulation driving . SID Symposium Digest of Technical Papers , 2021 . 52 ( 1 ): 868 - 871 . DOI: 10.1002/sdtp.14822 http://doi.org/10.1002/sdtp.14822 .

王顶. 小点间距LED显示屏驱动芯片的研究[D]. 北京: 北京交通大学, 2017.

WANG D. The research of fine pixel pitch LED display driver IC[D]. Beijing: Beijing Jiaotong University, 2017. (in Chinese)

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