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题名	轴向运动目标激光关联成像理论与实验研究
作者	李晓慧
学位类别	硕士
答辩日期	2015
授予单位	中国科学院上海光学精密机械研究所
导师	韩申生
关键词	关联成像 压缩感知 运动目标 去运动模糊 成像视场
其他题名	The theoretical and experimental research of ghost imaging for an axially moving target
中文摘要	强度关联成像，又称鬼成像（Ghost Imaging,GI），是近十几年来发展起来的一种新型成像技术，它实现了物体的非局域成像，从而物体能成在并不包含物体的光路上。近些年来，有研究表明当物体的稀疏先验特性可被探知的时候，运用压缩感知（Compressed Sensing,CS）理论，不仅能够提高关联成像的采样和重构效率，甚至还能够获得超分辨的图像。运动模糊主要是由成像系统与目标物之间的相对运动造成的。运动模糊图像复原是图像复原技术中十分重要的一个分支，在人们生产和生活的各个领域都有着广泛的应用价值。本文以经典热光源关联成像理论为基本框架，分析了轴向运动目标对强度关联成像质量的影响，并且探讨了成像去运动模糊的方法；以及强度关联成像成像视场大小问题的研究。为强度关联成像技术的实用化奠定了一定的基础。 第1章，简单介绍了强度关联成像的基本理论，以及关联成像技术主要的图像重构方法。而后简述了关联成像技术的发展和应用情况。最后介绍了目前运动目标关联成像的研究情况以及相应的去运动模糊方法。 第2章，针对轴向运动目标关联成像的情形，理论和实验验证了目标轴向运动对成像分辨率带来的影响。同时提出了一种基于散斑尺寸校正的去运动模糊方法。对于速度未知的匀速运动物体，还可以将其与速度检索方法相结合。 第3章，基于赝热光关联成像的理论框架之下，对关于成像物体成像视场大小的研究。并对其进行理论、数值仿真模拟、实验验证等方面的探究。 第4章，对本文所做的研究工作的总结，并对下一步研究工作进行了提议和展望。
英文摘要	Correlated imaging, also called ghost imaging(GI), is a new-style imaging technology which is developed rapidly during the recent decades. According to the theory of correlated imaging, the non-local imaging is realized, as a result, the image of object is achieved in the optical path without scanning the object. In recent years, it’s been shown that when target sparsity is explored, sampling and reconstruction efficiency of ghost imaging can be improved using compressed sensing(CS) techniques, even super-resolution image can be obtained. Motion blur is caused by the relative motion between the imaging system and the target. The motion blurred image restoration is an important branch in the field of image restoration technology, and has widespread application value in people’s production and life domains. Taking the classical thermal light ghost imaging theory as the framework, this thesis analyzes the influence of the axial moving target to the image quality of ghost imaging, and discusses the motion deblurring method. In addition, research on the size of the object’s field of view has also been done. These theoretical and experimental results lay the foundation for ghost imaging to be used in practical remote sensing application. In chapter 1, we introduce the basic theory and mainly reconstruction method of ghost imaging in brief. Then we recount the development and applications of ghost imaging technique. At last, we simply introduce the latest research situation of ghost imaging for a moving target and some revelant deblurring methods. In chapter 2, based on the axial moving target ghost imaging, we have theoretically and experimentally proved that the axial relative motion between the target and the source of GI system will lead to the degradation of transverse resolution. And we also proposed a motion deblurring method based on speckle-resizing. If the speed of the target is unknown and constant, we can combine the above deblurring method with speed retrieval. In chapter 3, based on the framework of the pseudo-thermal light ghost imaging theory, research on the size of the object’s field of view has also been done. Some relevant work has been done via theory, simulation and experiment. In chapter 4, first we summarize the main research work in this paper and then put forward the relevant advices and outlooks for further research.
语种	中文
内容类型	学位论文
源URL	[http://ir.siom.ac.cn/handle/181231/16894]
专题	上海光学精密机械研究所_学位论文
推荐引用方式 GB/T 7714	李晓慧. 轴向运动目标激光关联成像理论与实验研究[D]. 中国科学院上海光学精密机械研究所. 2015.

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