| CCD推扫遥感成像中的欠采样噪声处理 |
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| 引用本文： | 迟学芬,韩昌元,金辉.CCD推扫遥感成像中的欠采样噪声处理[J].电子学报,2003,31(9):1323-1326. |
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| 作者姓名： | 迟学芬 韩昌元 金辉 |
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| 作者单位： | 1. 吉林大学通信工程学院,吉林长春 130012;2. 中国科学院长春光学精密机械与物理研究所,吉林长春 130021;3. 北京邮电大学继续教育学院,北京 100876 |
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| 基金项目： | 国防重大科研基金资助项目 |
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| 摘 要： | 欠采样噪声产生分布于整个画面的小尺寸附加像,给目标识别等应用带来困难.本文推导并优化了CCD图像捕捉系统中消欠采样噪声算法,提出新的CCD推扫和采样数据处理方法,在CCD只能有推扫方向位移的遥感成像应用条件下,消除了图像中的欠采样噪声.扫描位移误差小于CCD间隔的1/4范围内,能消除或减小欠采样噪声.图像处理实验结果证明了欠采样噪声处理方法的正确性和有效性.
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| 关 键 词： | 欠采样噪声 CCD线性探测阵列 遥感 空间频率 |
| 文章编号： | 0372-2112(2003)09-1323-04 |
| 收稿时间： | 2002-07-31 |
Aliasing Noise Processing Methods in Push-Broom CCD Remote Sensing Imaging System |
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| CHI Xue fen ,HAN Chang yuan ,JIN Hui.Aliasing Noise Processing Methods in Push-Broom CCD Remote Sensing Imaging System[J].Acta Electronica Sinica,2003,31(9):1323-1326. |
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| Authors: | CHI Xue fen HAN Chang yuan JIN Hui |
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| Affiliation: | 1. Telecommunication Engineering College,Jilin University,Changchun,Jilin 130012,China;2. Changchun Institute of Optics,Fine Mechanics and Physics,Changchun,Jilin 130021,China;3. School of Continuing Education,Beijing University of Posts and Telecommunications,Beijing 100876,China |
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| Abstract: | The small scale artifacts generated by aliasing noise existing everywhere in an image,bring difficulties to some applications,such as target identification.Eliminating aliasing noise algorithm used in push broom CCD image gathering system is derived and optimized.The strategies for CCD push broom scanning and the novel methods for data processing are proposed.Aliasings in image are eliminated although CCD array can only move in one direction in remote sensing imaging system.The relative scan error must be less than 1/4 of CCD interval.The results of images processing experiments verify the validity of aliasing noise processing methods. |
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| Keywords: | aliasing noise CCD linear detector array remote sensing spatial frequency |
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