| 城市大比例尺真正射影像阴影与遮挡问题的研究 |
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| 引用本文： | 谢文寒,周国清.城市大比例尺真正射影像阴影与遮挡问题的研究[J].测绘学报,2010,39(1):52-58. |
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| 作者姓名： | 谢文寒 周国清 |
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| 作者单位： | 中国测绘科学研究院,北京,100039;Old Dominion University,Norfolk 23508,USA |
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| 基金项目： | 美国国家科学基金(0131893);;国家人事部留学人员科技活动择优资助项目(2008) |
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| 摘 要： | 为解决城市大比例尺正射影像生成的问题,从真正射影像的关键技术入手,着重研究其中的阴影与遮挡问题并提出相应解决方法。将这些方法应用在美国丹佛城区的真正射影像生成的项目中,取得了令人满意的效果。
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| 关 键 词： | 真正射影像 大比例尺正射影像 城市建筑模型 阴影分析 遮挡检测 |
Occlusion and Shadow Detection of Large-scale True Orthophoto in Urban Area |
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| XIE Wenhan,ZHOU Guoqing.Occlusion and Shadow Detection of Large-scale True Orthophoto in Urban Area[J].Acta Geodaetica et Cartographica Sinica,2010,39(1):52-58. |
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| Authors: | XIE Wenhan ZHOU Guoqing |
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| Institution: | XIE Wenhan1,ZHOU Guoqing21. Chinese Academy of Surveying , Mapping,Beijing 100039,China,2. Old Dominion University,Norfolk 23508,USA |
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| Abstract: | When the traditional orthorectification methods are applied for urban large-scale orthophoto generation,many problems exist. For example,their true positions of most objects in urban area are distorted from the orthophoto. This distortion shows that buildings lean over a street. Recent years,some researchers addressed the concept of true orthophoto. This paper mainly discusses the problem of buildings' shadow and occlusion in urban area,addresses DBM-based occlusion and shadow detection for true orthophoto ... |
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| Keywords: | true orthophoto large-scale orthophoto digital building model shadow analysis occlusion detection |
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