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1.
《国土资源遥感》2016,(4)
调制传递函数(modulation transfer function,MTF)不仅是监测遥感卫星光学相机在轨运行情况和性能的有效手段,也是对卫星图像进行复原处理的重要参数。利用刀刃法对高分二号(GF-2)卫星全色相机进行MTF在轨测量。在计算MTF的过程中,使用汉明窗对截取后的线扩展函数(line spread function,LSF)曲线进行处理,以抑制截取过程所造成的频谱泄露。此外,还对截取后LSF曲线的两端补0,扩展LSF曲线的长度,以提高傅里叶变换时的采样频率。实验结果表明,使用本文刀刃法计算所得的MTF采样密度比传统方法提高了5倍,使得MTF曲线更为平滑,提高了MTF的数值精度,有利于后续的图像复原处理。基于传统刀刃法和本文刀刃法计算所得的MTF测量结果,采用维纳滤波法分别对GF-2全色图像进行复原处理研究。结果表明,对2种方法得到的MTF测量结果的维纳滤波均可明显提高图像的清晰度和边缘细节信息;但使用本文方法得到的MTF结果可使复原后的图像在对比度、边缘能量和平均梯度等关键指标上均优于使用传统方法得到的MTF结果。 相似文献
2.
地物在成像过程中,由于受到光学成像系统作用、地物周边环境等影响,会使得到的地物影像存在噪声、模糊等各种影像质量下降的问题,这种现象就是图像退化。根据影像退化机制,利用调制传递函数补偿(Modulation Transfer Function Compensation,MTFC)原理复原图像,提高航空面阵成像系统的成像质量,使航空面阵影像更便于判读解译。采用调制传递函数补偿(MTFC)原理进行图像复原。复原图像与原始影像相比在一定程度上边缘更加清晰,更利于判读解译,但在复原过程中也不可避免的添加了噪声。通过复原图像评价指标对比发现,利用航线方向MTF得到的复原图像效果较差,这与成像系统航线方向成像性能偏低有关。 相似文献
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珠海一号高光谱卫星影像部分波段存在着噪声干扰,严重影响了数据的质量与信息利用.本文分析了珠海一号高光谱卫星数据噪声的特点,在矩匹配算法的基础上,使用移动窗格对影像进行分段处理,并采用距离加权计算与去除极端值统计数据的方法提高参考值的准确度,实现了基于影像的相对辐射校正.实验结果表明,与传统矩匹配法和傅里叶滤波法相比,本文方法能有效去除遥感影像中存在的噪声,并能较好保留原影像的辐射特征. 相似文献
6.
受到成像环境、硬件条件等因素的限制，高分辨率卫星遥感影像上普遍存在条带噪声的现象，其严重影响了影像的辐射质量和可用性。本文针对传统条带去除方法存在的适应性差、去噪效率低、依靠先验知识等不足，提出了一种基于深度学习卷积神经网络的条带噪声去除方法。本方法首先利用不同尺度的卷积层进行特征提取，然后对多尺度的特征图进行特征融合得到去噪底图，通过残差学习的方法在底图上预测存在的噪声分量，最后用噪声影像减去条带噪声分量实现噪声的去除。以模拟和真实获取的噪声影像为实验数据，将本文提出的方法与一些经典的去噪方法进行实验结果对比分析，实验结果表明本文提出的基于深度学习的条带噪声去除方法能够在保留影像地物细节的情况下，能以优异的速度达到最高的定量指标和最好的视觉效果，充分证明了本文方法的优越性。 相似文献
7.
调制传递函数（MTF）对影像质量评价具有重要的意义。本文介绍了一种测定卫星像片调制传递函数的方法，详细论述了利用多项式拟合法和比特压缩法来获取刀刃亮度曲线的过程，并进行了实验，实验证明文中介绍的方法是可行的。 相似文献
8.
DMC卫星图像MTF分析及其复原方法研究 总被引：9，自引：1，他引：9
复原退化模糊图像是遥感图像处理的研究重点。对成像系统的调制传递函数(MTF)进行了研究,分析了调制传递函数的基本理论。讨论了一种近似测定成像系统调制传递函数的方法,通过有限采样,曲线拟合,傅立叶变换,规格化的一系列处理得到图像获取、传输过程中的点扩展函数(PSF)。提取完整光滑的调制传递函数曲线,在频域中对图像进行去卷积复原,分析和评价了复原结果。将该方法应用于DMC卫星图像,图像质量得到明显提高,收到较好的复原效果。 相似文献
9.
分辨率是表示摄影成像系统和评价影像质量的重要指标,准确把握成像系统的分辨率在轨变化情况,关系到遥感影像的合理有效利用。本文采用地面铺设辐射状靶标的方法,利用天绘一号卫星获取的靶标影像,对搭载的CCD相机分辨率进行在轨检测,计算了成像系统沿轨和垂轨方向的分辨率,简要分析了检测结果的合理性。 相似文献
10.
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。 相似文献
11.
低空无人机影像在交通规划、城市管理、应急监控等领域正逐渐体现出其独到的优势,而将影像快速、准确地纠正与配准则是其发挥功用的必要前提。以拍摄于道路交叉口上方的无人机悬停视频为研究对象,探讨对其实现影像抖动纠正配准的方法。视频中的连续影像包含大量的近似地物及移动地物,难以直接采用传统的空间域或频率域方法进行配准。由此,提出了一种基于横道线识别的影像配准方法,经由图斑提取、筛选分类、轴线拟合及影像配准等步骤,实现了影像任意帧间的配准。利用无人机悬停拍摄的交叉口视频进行了验证,结果表明,该方法稳健、有效。 相似文献
12.
《The Photogrammetric Record》1978,9(51):437-449
Book review in this Article
THE UNITED KINGDOM FROM SPACE (2). By D. J. C arter and H. J. P. A rnold . Space Frontiers Ltd. Havant, Hampshire , 1977.
SURVEYS FOR DEVELOPMENT. Edited by J. J. N ossin . Elsevier Scientific Publishing Co. Amsterdam, Oxford, New York , 1977.
REMOTE SENSING OF THE TERRESTRIAL ENVIRONMENT. Edited by R. F. P eel , L. F. C urtis and E. C. B arrett . Butterworths, London , 1977.
MAPPING FOR FIELD SCIENTISTS. By W. R itchie , D. A. T ait , M. W ood and R. W right . David and Charles, Newton Abbot, Devon , 1977.
SURVEYING AND PHOTOGRAMMETRY. COMPUTATION FOR CIVIL ENGINEERS. By D. E. M urchison . Newnes–Butterworths, London , 1977.
RESOURCE SENSING FROM SPACE: PROSPECTS FOR DEVELOPING COUNTRIES. Report of the Ad Hoc Committee on Remote Sensing for Development. US National Academy of Sciences, Washington, D.C. , 1977.
MISSION TO EARTH: LANDSAT VIEWS THE WORLD. By N. M. S hort , P. D. L owman , S. C. F reden and W. A. F inch . National Aeronautics and Space Administration, Washington, D.C. , 1976.
REMOTE SENSING IN GEOMORPHOLOGY. By H. T h . V erstappen . Elsevier Scientific Publishing Company, Amsterdam, Oxford, New York , 1977. 相似文献
THE UNITED KINGDOM FROM SPACE (2). By D. J. C arter and H. J. P. A rnold . Space Frontiers Ltd. Havant, Hampshire , 1977.
SURVEYS FOR DEVELOPMENT. Edited by J. J. N ossin . Elsevier Scientific Publishing Co. Amsterdam, Oxford, New York , 1977.
REMOTE SENSING OF THE TERRESTRIAL ENVIRONMENT. Edited by R. F. P eel , L. F. C urtis and E. C. B arrett . Butterworths, London , 1977.
MAPPING FOR FIELD SCIENTISTS. By W. R itchie , D. A. T ait , M. W ood and R. W right . David and Charles, Newton Abbot, Devon , 1977.
SURVEYING AND PHOTOGRAMMETRY. COMPUTATION FOR CIVIL ENGINEERS. By D. E. M urchison . Newnes–Butterworths, London , 1977.
RESOURCE SENSING FROM SPACE: PROSPECTS FOR DEVELOPING COUNTRIES. Report of the Ad Hoc Committee on Remote Sensing for Development. US National Academy of Sciences, Washington, D.C. , 1977.
MISSION TO EARTH: LANDSAT VIEWS THE WORLD. By N. M. S hort , P. D. L owman , S. C. F reden and W. A. F inch . National Aeronautics and Space Administration, Washington, D.C. , 1976.
REMOTE SENSING IN GEOMORPHOLOGY. By H. T h . V erstappen . Elsevier Scientific Publishing Company, Amsterdam, Oxford, New York , 1977. 相似文献
13.
《The Photogrammetric Record》1996,15(87):481-488
Books Reviewed:
S. F. El-Hakim, Videometrics II
J. Denègre, Thematic Mapping From Satellite Imagery, A Guidebook
T. C. Waugh and R. G. Healey, Advances In GIS Research
J. C. Muller, J.-P. Lagrange and R. Weibe GIS and Generalization. Methodology And Practice
P. M. Mather, Terra 2: Understanding the Terrestrial Environment. Remote Sensing Data Systems And Networks
B. Hofmann-Wellenhof, H. Lichtenegger and J. Collins, Global Positioning System: Theory and Practice
D. Shirvanian, European Space Directory 1995
E. Falkner, Aerial Mapping: Methods And Applications
S. O. Mason, Expert System-Based Design of Photogrammetric Networks
S. F. El-Hakim, Videometrics III
D. Green and D. Rix, The Agi Source Book For Geographic Information Systems, 1995 相似文献
S. F. El-Hakim, Videometrics II
J. Denègre, Thematic Mapping From Satellite Imagery, A Guidebook
T. C. Waugh and R. G. Healey, Advances In GIS Research
J. C. Muller, J.-P. Lagrange and R. Weibe GIS and Generalization. Methodology And Practice
P. M. Mather, Terra 2: Understanding the Terrestrial Environment. Remote Sensing Data Systems And Networks
B. Hofmann-Wellenhof, H. Lichtenegger and J. Collins, Global Positioning System: Theory and Practice
D. Shirvanian, European Space Directory 1995
E. Falkner, Aerial Mapping: Methods And Applications
S. O. Mason, Expert System-Based Design of Photogrammetric Networks
S. F. El-Hakim, Videometrics III
D. Green and D. Rix, The Agi Source Book For Geographic Information Systems, 1995 相似文献
14.
15.
《The Photogrammetric Record》1976,8(47):679-682
Book review in this Article
ORDNANCE SURVEY MAPS. A DESCRIPTIVE TEXT. By J. B. H arley . Ordnance Survey, Southampton , 1975.
AERIAL PHOTOGRAPHY IN ANTHROPOLOGICAL FIELD RESEARCH. Edited by E. Z. Vogt. Harvard University Press, Cambridge, Massachusetts , 1974.
THE MAP MARKET IN GREAT BRITAIN. By B. D. D rewitt . O rdnance S urvey P rofessional P aper N o . 28, Ordnance Survey of Great Britain, Southampton , 1975.
PHOTOTRIANGULATION. By S. K. G hosh . D. C. Heath and Co., Lexington, Massachusetts and Farnborough, Hampshire , 1975. 相似文献
ORDNANCE SURVEY MAPS. A DESCRIPTIVE TEXT. By J. B. H arley . Ordnance Survey, Southampton , 1975.
AERIAL PHOTOGRAPHY IN ANTHROPOLOGICAL FIELD RESEARCH. Edited by E. Z. Vogt. Harvard University Press, Cambridge, Massachusetts , 1974.
THE MAP MARKET IN GREAT BRITAIN. By B. D. D rewitt . O rdnance S urvey P rofessional P aper N o . 28, Ordnance Survey of Great Britain, Southampton , 1975.
PHOTOTRIANGULATION. By S. K. G hosh . D. C. Heath and Co., Lexington, Massachusetts and Farnborough, Hampshire , 1975. 相似文献
16.
《The Photogrammetric Record》1995,15(85):145-156
I. J. Dowman, Systems For Data Processing, Analysis And Representation, p. 145
A. M. Morgado, Spatial Information From Digital Photogrammetry And Computer Vision, p. 147
P. R. T. Newby, Mapping And Geographic Information Systems, p. 148
D. A. Tait, Facing The Chance And The Challenge, p.154
P. J. Curran, Eco Rio '94, p.155 相似文献
A. M. Morgado, Spatial Information From Digital Photogrammetry And Computer Vision, p. 147
P. R. T. Newby, Mapping And Geographic Information Systems, p. 148
D. A. Tait, Facing The Chance And The Challenge, p.154
P. J. Curran, Eco Rio '94, p.155 相似文献
17.
《The Photogrammetric Record》1996,15(88):625-634
Books reviewed:
K. B. Atkinson, Close Range Photogrammetry And Machine Vision
R. A. Earnshaw and D. Watson, Animation And Scientific Visualization—Tools And Applications
R. A. Earnshaw, M. A. Gigante and H. Jones, Virtual Reality Systems
S. Macdonald, Mapping The World
P. Fisher, Innovations in GIS 2
A. Gruen, O. Kuebler and P. Agouris, Automatic Extraction of Man-Made Objects From Aerial and Space Images
H. Campbell and I. Masser, GIS and Organisations
S. C. Guptill and J. L. Morrison, Elements of Spatial Data Quality
D. Shirvanian, European Space Directory, 1996
D. R. Green, D.Rix and C. Corbin, The Agi Source Book for Geographic Information Systems, 1996
K. C. Graf, Realistic Landscape Rendering Using Remote Sensing Images, Digital Terrain Models and 3D Objects 相似文献
K. B. Atkinson, Close Range Photogrammetry And Machine Vision
R. A. Earnshaw and D. Watson, Animation And Scientific Visualization—Tools And Applications
R. A. Earnshaw, M. A. Gigante and H. Jones, Virtual Reality Systems
S. Macdonald, Mapping The World
P. Fisher, Innovations in GIS 2
A. Gruen, O. Kuebler and P. Agouris, Automatic Extraction of Man-Made Objects From Aerial and Space Images
H. Campbell and I. Masser, GIS and Organisations
S. C. Guptill and J. L. Morrison, Elements of Spatial Data Quality
D. Shirvanian, European Space Directory, 1996
D. R. Green, D.Rix and C. Corbin, The Agi Source Book for Geographic Information Systems, 1996
K. C. Graf, Realistic Landscape Rendering Using Remote Sensing Images, Digital Terrain Models and 3D Objects 相似文献
18.
《The Photogrammetric Record》1981,10(57):384-392
Book review in this Article
TERRAIN ANALYSIS AND CLASSIFICATION USING AERIAL PHOTOGRAPHS: a geomorphological approach. By R. A. and F. J. van Z uidam . International Institute for Aerial Survey and Earth Sciences (ITC), Enschede, Netherlands , 1978–9.
COMPLETE INDEX TO PHOTOGRAMMETRIC ENGINEERING AND REMOTE SENSING. Volumes I-XLV: 1934–1979. American Society of Photogrammetry, Falls Church, Virginia , 1980.
FUNDAMENTALS OF SURVEYING. By M. O. S chmidt and W. H. R ayner . Second Edition. Van Nostrand Company, New York , 1978.
REPORT OF SECOND EXPERT CONSULTATION ON A WORLD INDEX OF SPACE IMAGERY. Prepared by J. A. H oward and A. van D ijk . Food and Agriculture Organisation of the United Nations, Rome , 1980.
PROGRESS IN CONTEMPORARY CARTOGRAPHY, VOLUME I: THE COMPUTER IN CONTEMPORARY CARTOGRAPHY. Edited by D. R. F raser T aylor . John Wiley and Sons, Lid. New York , 1980.
GEOLOGICAL AND TOPOGRAPHIC MAPPING FROM AERIAL PHOTOGRAPHS. By K. S. D ueholm and numerous other authors. Meddelelse 10, Instituttet for Landmåling og Fotogrammetri, Danmarks Tekniski Højskole , 1979.
PHOTOGRAMMETRY. By F. H. M offitt and E. M. M ikhail . Third edition. Harper and Row, New York , 1980.
ADVANCED PHYSICAL GEODESY. By H. M oritz . Herbert Wichmann Verlag. Karlsruhe and Abacus Press, Tunbridge Wells , 1980.
PAPERS WRITTEN IN HONOR OF THE 70TH BIRTHDAY OF PROFESSOR LUIGI SOLAINI. Ricerche di Geodesia, Topografia e Fotogrammetria, No. 1. Cooperativa Libraria Universitaria del Politecnico on behalf of Institute di Topografia, Fotogrammetria e Geofisica, Politecnico de Milano , 1979.
INTERNATIONAL JOURNAL OF REMOTE SENSING, Volume 1, Number 1, January-March, 1980. Quarterly. Taylor & Francis Ltd. London. 相似文献
TERRAIN ANALYSIS AND CLASSIFICATION USING AERIAL PHOTOGRAPHS: a geomorphological approach. By R. A. and F. J. van Z uidam . International Institute for Aerial Survey and Earth Sciences (ITC), Enschede, Netherlands , 1978–9.
COMPLETE INDEX TO PHOTOGRAMMETRIC ENGINEERING AND REMOTE SENSING. Volumes I-XLV: 1934–1979. American Society of Photogrammetry, Falls Church, Virginia , 1980.
FUNDAMENTALS OF SURVEYING. By M. O. S chmidt and W. H. R ayner . Second Edition. Van Nostrand Company, New York , 1978.
REPORT OF SECOND EXPERT CONSULTATION ON A WORLD INDEX OF SPACE IMAGERY. Prepared by J. A. H oward and A. van D ijk . Food and Agriculture Organisation of the United Nations, Rome , 1980.
PROGRESS IN CONTEMPORARY CARTOGRAPHY, VOLUME I: THE COMPUTER IN CONTEMPORARY CARTOGRAPHY. Edited by D. R. F raser T aylor . John Wiley and Sons, Lid. New York , 1980.
GEOLOGICAL AND TOPOGRAPHIC MAPPING FROM AERIAL PHOTOGRAPHS. By K. S. D ueholm and numerous other authors. Meddelelse 10, Instituttet for Landmåling og Fotogrammetri, Danmarks Tekniski Højskole , 1979.
PHOTOGRAMMETRY. By F. H. M offitt and E. M. M ikhail . Third edition. Harper and Row, New York , 1980.
ADVANCED PHYSICAL GEODESY. By H. M oritz . Herbert Wichmann Verlag. Karlsruhe and Abacus Press, Tunbridge Wells , 1980.
PAPERS WRITTEN IN HONOR OF THE 70TH BIRTHDAY OF PROFESSOR LUIGI SOLAINI. Ricerche di Geodesia, Topografia e Fotogrammetria, No. 1. Cooperativa Libraria Universitaria del Politecnico on behalf of Institute di Topografia, Fotogrammetria e Geofisica, Politecnico de Milano , 1979.
INTERNATIONAL JOURNAL OF REMOTE SENSING, Volume 1, Number 1, January-March, 1980. Quarterly. Taylor & Francis Ltd. London. 相似文献
19.
中国大陆岩石GPS平台Geo TransGIS的设计与实现 总被引：2，自引：0，他引：2
在中国大陆岩石圈地理信息系统研究过程中，提出了一种工具型二维地理信息系统和二三维地理信息系统地功能模块的设计思路，探讨了了面向对象方法，面向对象数据模型，面向对象数据库、无缝集成、开放式数据库互联技术在理信息系统研制中的运用；并用实例证明了此设计方法的可行性和实用性。 相似文献
20.
道路信息在多个应用领域中发挥着基础性的作用。光学遥感影像能够以较高的空间分辨率对目标地物进行精细化解译,可大幅增强地物目标的提取能力。充分利用光学遥感影像丰富的几何纹理信息,进行道路的精确提取,已成为当前遥感学界研究的热点与前沿问题。鉴于此,本文依据近年来大量相关文献,对现有的理论与方法进行了归类与总结,通过分析不同方法采用的道路特征组合,将道路提取方法划分为模板匹配、知识驱动、面向对象和深度学习4类方法,简要介绍了道路提取普适性的评价指标并对部分方法进行了分析与评价;最后对现有光学遥感影像道路提取的发展提出了建议和展望。 相似文献