Revision of LED Display Images Acquired by CCD Camera

DING Bo-xiu; ZHENG Xi-feng; CHEN Yu; MIAO Jing; GUI Jin-zhen

doi:10.3788/OPE.20132105.1318

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Revision of LED Display Images Acquired by CCD Camera

更新时间：2020-08-12

- Revision of LED Display Images Acquired by CCD Camera
- Optics and Precision Engineering Vol. 21, Issue 5, Pages: 1318-1325(2013)
- 作者机构：
  
  中国科学院长春光学精密机械与物理研究所,吉林长春,中国,130033
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20132105.1318
  CLC： TN312.8;TP391
- Received：03 September 2012，
  
  Revised：09 October 2012，
  
  Published Online：24 May 2013，
  
  Published：15 May 2013
- 稿件说明：
移动端阅览
丁柏秀郑喜凤陈宇苗静桂劲征. 发光二极管显示屏CCD图像的修正[J]. 光学精密工程, 2013,21(5): 1318-1325

DING Bo-xiu ZHENG Xi-feng CHEN Yu MIAO Jing GUI Jin-zhen. Revision of LED Display Images Acquired by CCD Camera[J]. Editorial Office of Optics and Precision Engineering, 2013,21(5): 1318-1325
丁柏秀郑喜凤陈宇苗静桂劲征. 发光二极管显示屏CCD图像的修正[J]. 光学精密工程, 2013,21(5): 1318-1325 DOI： 10.3788/OPE.20132105.1318.

DING Bo-xiu ZHENG Xi-feng CHEN Yu MIAO Jing GUI Jin-zhen. Revision of LED Display Images Acquired by CCD Camera[J]. Editorial Office of Optics and Precision Engineering, 2013,21(5): 1318-1325 DOI： 10.3788/OPE.20132105.1318.

摘要

提出了一种有效的图像修正方法，用于修正用彩色CCD相机采集的LED显示屏图像。首先，利用均匀标准白板逐像素点法对制造工艺使彩色CCD相机产生的曲面进行渐晕修正；然后，利用LED管芯配光曲线的分布规律修正由于相机采集位置的影响产生的偏差，并给出了修正原理和修正的过程；最后，给出了实验数据及结论。修正后，红、绿、蓝基色的均匀性均方差分别从4.0%减少到1.48%，从3.1%减少到1.36%，和从3.5%减少到1.39%。利用该方法修正过的LED图像既消除了相机本身的曲面产生的渐晕，又消除了由于相机采集角度的影响产生的偏差，是一种非常有效的LED显示屏CCD图像的修正方法，实验结果基本符合修正的要求。

Abstract

An efficient revising method was proposed to revise the display images of a Light Emission Diode(LED) captured by a color CCD camera. Firstly

the uniform standard white board was used to revise the vignetting phenomenon caused by a curved surface of color CCD camera in the manufacturing process. Then

on the basis of the distribution regularity of the lighting distribution curve of the LED

the deviation of LED itself caused by the camera position was revised also. The revising theory and revising process were described. Finally

relative data and conclusion were given. It shows that the uniform mean-square deviations of red

green and blue primaries have been decreased from 4.0% to 1.48%

3.1% to 1.36%

and 3.5% to 1.39%

respectively

after revising. It is shown that this method is an efficient one. It not only eliminates the vignetting phenomenon caused by the curved surface of the camera itself

but also removes the deviation caused by the capturing angle of the CCD camera. The experimental results meet the requirements of image revising basically.

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Keywords

references

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中国科学院长春光学精密机械与物理研究所

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．中国科学院大学

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