| 基于系统模型的CCD图像MTF补偿及误差分析 |
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| 引用本文： | 张朋,刘方坚,刘团结.基于系统模型的CCD图像MTF补偿及误差分析[J].测绘科学,2010,35(1):116-118. |
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| 作者姓名： | 张朋 刘方坚 刘团结 |
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| 作者单位： | 中国科学院电子学研究所,北京,100190;中国科学院研究生院,北京,100039;中国科学院电子学研究所,北京,100190 |
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| 基金项目： | 国家高技术研究发展863计划(2007AA701214)资助课题 |
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| 摘 要： | 航天线阵推扫CCD图像在获取、传输过程中存在图像模糊的现象,而MTF是评价CCD图像质量的最可靠指标。为了改善图像质量,通过分析影响MTF的主要因素,提出基于系统模型的MTF补偿方法:首先建立系统模型,提出模型参数的估计方法,然后结合约束最小二乘算法复原图像。在仿真实验中,模拟图像的模糊和加噪过程,利用MTF模型复原图像,并评价MTF补偿图像质量,定量分析模型参数估计误差对图像复原结果的影响。实验结果表明:基于系统模型的MTF补偿方法能够有效而简便地复原图像,提高图像质量。
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| 关 键 词： | 线阵CCD MTF补偿 系统模型法 误差分析 |
MTF compensation and error analysis for CCD image based on system model |
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| ZHANG Peng,LIU Fang-jian,LIU Tuan-jie.MTF compensation and error analysis for CCD image based on system model[J].Science of Surveying and Mapping,2010,35(1):116-118. |
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| Authors: | ZHANG Peng LIU Fang-jian LIU Tuan-jie |
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| Abstract: | Space-borne linear push-broom CCD image is always blurry in the process of image acquisition and transmission.MTF is a reliable assessment for the quality of CCD image.In order to improve the quality of image,MTF compensation based on MTF system model is proposed by analyzing the main factors of MTF.The estimation method for model parameter is put forward by studying the MTF system model.Then image restoration is performed using constrained least squares algorithm.The process of image degradation and contam... |
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| Keywords: | linear CCD MTF compensation system model method error analysis |
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