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多TDI-CCD拼接相机非均匀性校正方法
引用本文:岳俊华,李岩,武学颖,郭永飞,司国良.多TDI-CCD拼接相机非均匀性校正方法[J].光学精密工程,2009,17(12):3084-3088.
作者姓名:岳俊华  李岩  武学颖  郭永飞  司国良
作者单位:1. 吉林建筑工程学院2. 长春光机所3. 长春理工大学
摘    要:针对多TDI-CCD拼接相机成像存在非均匀性问题,开展了对拼接相机输出图像片内及片间综合校正算法的研究。首先,结合CCD相机特性,介绍了TDI-CCD的工作原理以及拼接相机非均匀性的产生机理。然后,分别对拼接相机片内及片间非均匀性校正的原理进行分析,提出了片内采用两点法校正、片间采用比值平均校正的综合校正算法。最后,对片内及片间综合非均匀性校正的参数标定及校正方法进行了探讨;实验结果表明,在原拼接输出图像存在8.4%非均匀性的条件下,采用片内与片间综合校正法校正后,图像非均匀性达到2.7%。该校正方法基本满足了对TDI-CCD拼接相机非均性校正的指标要求,算法有效实用。

关 键 词:TDI-CCD  拼接相机  非均匀性  图像校正
收稿时间:2008-11-20
修稿时间:2009-01-04

Non-uniformity correction of multi-TDICCD mosaic camera
YUE Jun-Hua,LI Yan,WU Xue-Ying,GUO Yong-Fei.Non-uniformity correction of multi-TDICCD mosaic camera[J].Optics and Precision Engineering,2009,17(12):3084-3088.
Authors:YUE Jun-Hua  LI Yan  WU Xue-Ying  GUO Yong-Fei
Abstract:Aim at non-uniformity problem of multi-TDICCD mosaic camera, the synthetically correction algorithms about single TDICCD and multi TDICCDs are studied. First, based on CCD camera characteristic, the principles of TDICCD and non-uniformity are introduced. Then the principle of single and multi TDICCD is analyzed respective, two point correction methods is applied in single TDICCD and ratio average correction method is applied in multi TDICCD .At last, the integrative correction method is discussed. Experimental results indicate that multi-TDICCD mosaic camera is in a condition of 8.4% non-uniformity and it can reach to 2.7% non-uniformity after the correction. This correction method is satisfied the desire of the target of multi-TDICCD camera, and the algorithms has good practicality and efficiency.
Keywords:TDICCD  mosaic camera  non-uniformity  image correction
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