解决大幅面CCD相机三色分离的方法

刘霖; 王平; 刘娟秀; 叶玉堂; 贾宏宇

doi:10.3788/OPE.20122010.2260

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解决大幅面CCD相机三色分离的方法

信息科学 | 更新时间：2020-08-12

- 解决大幅面CCD相机三色分离的方法
- Improved method to solve color separation for large format CCD camera
- 光学精密工程 2012年20卷第10期页码：2260-2267
- 作者机构：
  
  电子科技大学光电信息学院,四川成都,610054
- 作者简介：
- 基金信息：
  
  粤港招标关键领域重点突破项目(No.w0511159)();国家兵器集团资助项目(No.w0511142)()
- DOI：10.3788/OPE.20122010.2260
  中图分类号： V447.3;TN386.5
- 收稿日期：2012-05-11，
  
  修回日期：2012-07-03，
  
  纸质出版日期：2012-10-10
- 稿件说明：
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刘霖, 王平, 刘娟秀, 叶玉堂, 贾宏宇. 解决大幅面CCD相机三色分离的方法[J]. 光学精密工程, 2012,20(10): 2260-2267

LIU Lin, WANG Ping, LIU Juan-xiu, YE Yu-tang, JIA Hong-yu. Improved method to solve color separation for large format CCD camera[J]. Editorial Office of Optics and Precision Engineering, 2012,20(10): 2260-2267
刘霖, 王平, 刘娟秀, 叶玉堂, 贾宏宇. 解决大幅面CCD相机三色分离的方法[J]. 光学精密工程, 2012,20(10): 2260-2267 DOI： 10.3788/OPE.20122010.2260.

LIU Lin, WANG Ping, LIU Juan-xiu, YE Yu-tang, JIA Hong-yu. Improved method to solve color separation for large format CCD camera[J]. Editorial Office of Optics and Precision Engineering, 2012,20(10): 2260-2267 DOI： 10.3788/OPE.20122010.2260.

摘要

针对大幅面彩色电荷耦合器件(CCD)相机三通道色彩彼此分离的问题

深入研究了CCD的内部结构

分析了多线阵彩色CCD三色分离的原因

提出了一种将三通道数据分开缓存的修正方法

并制作了国内第一台高速多线阵CCD大幅面扫描仪。该修正方法根据多线阵彩色CCD内部工艺结构

将三通道数据在硬件上进行分开缓存、重组

实现真实色彩的还原。理论分析与实际应用效果表明:经过处理后的图像

R、G、B

三色分离现象得到极大改善

在1 200 DPI的分辨率下

三通道色彩未见分离。制作的大幅面扫描仪在600 DPI的分辨率下

扫描速度可达5.08 cm/s

扫描处理一张A0的图纸只需30 s的时间

图像拼接处像素误差在2以内。

Abstract

To correct the color separation of a large format CCD camera

this paper researches the internal structure of the CCD

analyzes the reasons of three color separation of multi-linear-array CCDs and proposes a new correction method to cache three-channel data separately. Then

it establishes the first high-speed tri-CCD large format scanner domestically. On the basis of the internal process structures of the tri-CCD

this correction method caches and restructures the three-channel data in hardware separately

and restores the true color. The theoretical analysis and practical application results show that three-color separation phenomenon has been greatly reformed after treated

and three-channel color is not separation in 1 200 DPI. In 600 DPI

the scan speed of the scanner produced by our team has been up to 5.08 cm/s

and it only takes 30 s to scan a A0 size drawing. Furthermore

the splicing error of the image after scanning will be superior to 2 pixels。

关键词

Keywords

references

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