TDICCD拼接相机的像元响应非均匀性校正方法

宁永慧; 郭永飞

doi:10.3788/CO.20130603.0386

TDICCD拼接相机的像元响应非均匀性校正方法

doi: 10.3788/CO.20130603.0386

宁永慧^1,2, ,,
郭永飞¹

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

基金项目:

国家自然科学基金资助项目(No.61036015)

详细信息

作者简介:
宁永慧(1982-),男,吉林东丰人,博士,助理研究员,2009年于中国科学院电子学研究所获得硕士学位,主要从事CCD光电成像技术的研究。E-mail:way007@163.com;郭永飞(1961-),男,山东人,研究员,博士生导师,1990年于中国科学院长春光学精密机械与物理研究所获得硕士学位,主要从事光电技术应用、CCD在计算机中的应用、嵌入式系统开发等方面的研究。E-mail:guoyf@ciomp.ac.cn

宁永慧(1982-),男,吉林东丰人,博士,助理研究员,2009年于中国科学院电子学研究所获得硕士学位,主要从事CCD光电成像技术的研究。E-mail:way007@163.com;郭永飞(1961-),男,山东人,研究员,博士生导师,1990年于中国科学院长春光学精密机械与物理研究所获得硕士学位,主要从事光电技术应用、CCD在计算机中的应用、嵌入式系统开发等方面的研究。E-mail:guoyf@ciomp.ac.cn

通讯作者:
宁永慧

中图分类号: V447.3;TP751.1
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- 被引次数: 0
出版历程
- 收稿日期: 2013-02-21
- 修回日期: 2013-04-23
- 刊出日期: 2013-06-10

Correction of pixel response non-uniformity in TDICCD mosaic camera

NING Yong-hui^{1,2
, ,},
GUO Yong-fei¹

1.
Changchun Institute of Optics, Fine Mechanics and Physics Chinese Academy of Sciences, Changchun 130033, China;
2.
University of Chinese Academy of Sciences, Beijing 100049, China

摘要

摘要: 为了解决光学TDICCD成像系统在拼接模式下的像元响应非均匀性问题,研究了TDICCD像元校正的原理和实现方法。提出了视频处理器在不同增益、不同偏置和TDICCD在不同积分时间下进行像元校正的方法,设计了在现场可编程门阵列(FPGA)平台下进行了程序实现和验证的方法。实验数据分析表明:成像系统单片TDICCD的非均匀性由4.72%降低到0.27%,恶劣环境下TDICCD成像系统的图像非均匀性可以降低2.55%。该像元级校正算法简单,可靠性高,能够满足星上成像的要求;在不同的增益、偏置和积分时间下能够很好地解决TDICCD成像系统的像元响应非均匀性问题。
- CCD相机 /
- TDICCD /
- 像元校正 /
- 增益偏置参数 /
- 校正参数 /
- 像元非均匀性
Abstract: To improve the Pixel Response Non-uniformity(PRNU) in a TDICCD mosaic camera, an algorithm was proposed to correct the PRNU between the channels and among the pixels in channels at different gains, deviations and integrated time. Then, a design method was given to implement the algorithm on a Field Programmable Gate Array(FPGA) platform. The experimental results indicate that the problems of PRNU could be solved at different gains, deviations and integrated time in the TDICCD mosaic camera. The PRNU of a single TDICCD could be decreased from 4.72% to 0.27%. In bad circumstance, the PRNU of the single TDICCD could be decreased from 4.68% to 2.13%. The actual image also proves that the pixel correction algorithm has high real time performance, high reliability and stability, and a satisfied result to the requirements of space-projects. It solves the real-time pixel correction problem of the PRNU in TDICCD mosaic cameras.
- CCD camera /
- TDICCD /
- pixel correction /
- gain and deviation parameter /
- correction parameter /
- pixel non-uniformity

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