| 基于近景单影像的房檐改正计算方法 |
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| 引用本文： | 张剑清, 王强. 基于近景单影像的房檐改正计算方法[J]. 武汉大学学报 ( 信息科学版), 2007, 32(12): 1091-1094. |
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| 作者姓名： | 张剑清 王强 |
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| 作者单位： | 1 武汉大学遥感信息工程学院,武汉市珞喻路129号,4300792 武汉大学测绘遥感信息工程国家重点实验室,武汉市珞喻路129号,4300793 湖南城市学院城市建设系,益阳市朝阳路4号,413000 |
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| 摘 要： | 介绍了利用地面获取的单幅房屋近景影像计算房檐改正值的方法。该方法使用数码相机倾斜影像和房屋外观的几何约束条件,根据交比不变与透视旋转原理,确立了灭点、物方直线段与影像投影直线段之间的关系,并由此计算房檐宽度。实验结果表明,该方法能够满足实际需求。
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| 关 键 词： | 房檐改正 灭点 交比不变 透视旋转 |
| 文章编号： | 1671-8860（2007）12-1091-04 |
| 收稿时间： | 2007-09-18 |
| 修稿时间： | 2007-09-18 |
Computation Method of Eave Correction Based on Single Close Range Image |
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| ZHANG Jianqing, WANG Qiang. Computation Method of Eave Correction Based on Single Close Range Image[J]. Geomatics and Information Science of Wuhan University, 2007, 32(12): 1091-1094. |
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| Authors: | ZHANG Jianqing WANG Qiang |
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| Affiliation: | 1 School of Remote Sensing and Information Engineering,Wuhan University,129 Luoyu Road,Wuhan 430079,China1 State Key Laboratory of Information Engineering in Surveying,Mapping and Remote Sensing,129 Luoyu Road,Wuhan 430079,China3 City Construction Academy,Hunan City University,4 Chaoyang Road,Yiyang 413000,China |
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| Abstract: | A method for computing the value of eave correction by using the single close range image of a building is introduced. In the method the digital lean image and the conditions of geometry and restriction of the framework appearance of building are used. According the cross ratio invariability and perspective reversion, the relation among the vanishing points, the spatial beelines and their projections in image is determined, and the width of the eave can be calculated. Experimental results show that it meets the requirements. |
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| Keywords: | eave correction vanishing point cross ratio invariability perspective reversion |
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