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Noise Model of a Multispectral TDI CCD Imaging System and Its Parameter Estimation of Piecewise Weighted Least Square Fitting
Zheng, L. L.; G. Jin; W. Xu; H. S. Qu and Y. Wu
2017
发表期刊Ieee Sensors Journal
卷号17期号:12
摘要The time-delayed integration (TDI) charge-coupled device (CCD) imaging technology is widely used in remote sensing field and accurate estimation of noise level is essential to assure good performance of denoising. Therefore, in order to achieve images with high signal-to-noise ratio by the TDI CCD sensor, the noise model of the imaging system is investigated. First, the design of the imaging circuit system is presented, and the main noises of the system are analyzed, such as the TDI CCD sensor, amplifiers, and so on. Then a theoretical noise model of the imaging system is established as a priori information. An improved least square fitting method of parameter estimation is proposed. To validate the theoretical model and the proposed method, extensive tests are carried out to obtain multiple uniform images on a developed TDI CCD imaging system. The experiment results confirm that a precise noise model can be achieved by this method and it verifies the theoretical model, meanwhile. It can be used for noise removal and aided design of imaging systems to acquire high-quality images. It is meaningful for remote sensing to obtain more targets of interest.
收录类别sci ; ei
语种英语
文献类型期刊论文
条目标识符http://ir.ciomp.ac.cn/handle/181722/59484
专题中科院长春光机所知识产出
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GB/T 7714
Zheng, L. L.,G. Jin,W. Xu,et al. Noise Model of a Multispectral TDI CCD Imaging System and Its Parameter Estimation of Piecewise Weighted Least Square Fitting[J]. Ieee Sensors Journal,2017,17(12).
APA Zheng, L. L.,G. Jin,W. Xu,&H. S. Qu and Y. Wu.(2017).Noise Model of a Multispectral TDI CCD Imaging System and Its Parameter Estimation of Piecewise Weighted Least Square Fitting.Ieee Sensors Journal,17(12).
MLA Zheng, L. L.,et al."Noise Model of a Multispectral TDI CCD Imaging System and Its Parameter Estimation of Piecewise Weighted Least Square Fitting".Ieee Sensors Journal 17.12(2017).
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