| 从船侧倾斜拍摄图像中提取海冰密集度的方法 |
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| 引用本文： | 卢鹏,李志军,哈斯·克里斯蒂安. 从船侧倾斜拍摄图像中提取海冰密集度的方法[J]. 大连海事大学学报(自然科学版), 2009, 35(2) |
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| 作者姓名： | 卢鹏 李志军 哈斯·克里斯蒂安 |
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| 作者单位： | 卢鹏,李志军(大连理工大学,海岸和近海工程国家重点实验室,辽宁,大连,116024);哈斯·克里斯蒂安(艾伯塔大学,地球和空间科学系,艾伯塔,埃德蒙顿,T6G2E3) |
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| 基金项目： | 国家自然科学基金青年基金资助项目，国家科技支撑计划项目 |
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| 摘 要： | 为消除提取海冰密集度时因摄影镜头倾斜造成图像变形可能引起的误差,基于摄影测量学原理,对倾斜拍摄引起的图像变形进行修正,建立从倾斜拍摄的图像中提取海冰密集度的精确方法和相应的简化算法.以2006年德国南极威德尔海冬季考察中获取的图像为例,讨论了现场观测时的系统标定方法和不同算法的计算结果.对比分析验证了图像变形修正的必要性,说明简化算法能够同时保证海冰密集度计算的精度和效率.
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| 关 键 词： | 海冰 密集度 提取 摄影测量 图像分析 |
A method to obtain sea ice concentration from oblique images on shipboard |
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| LU Peng,LI Zhi-jun,HASS Christian. A method to obtain sea ice concentration from oblique images on shipboard[J]. Journal of Dalian Maritime University, 2009, 35(2) |
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| Authors: | LU Peng LI Zhi-jun HASS Christian |
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| Affiliation: | LU Peng1,LI Zhi-jun1,HASS Christian2(1.State Key Laboratory of Coastal , Offshore Engineering,Dalian University of Technology,Dalian 116024,China,2.Department of Earth , Atmospheric Sciences,University of Alberta,Edmonton T6G2E3,Canada) |
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| Abstract: | To avoid the considerable errors of sea ice concentration from oblique images caused by camera lens inclination,the image distortion induced by oblique photography was quantitatively estimated based on photogrammetry theory,and an accurate method to obtain sea ice concentration from oblique images was developed as well as a corresponding simplified method.Thereafter,oblique sea ice images during German winter Weddell Sea research expedition in 2006 were presented as examples to discuss the system calibratio... |
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| Keywords: | sea ice concentration extraction photogrammetry image analysis |
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