【作者】 汪荣贵； 张佑生； 高隽； 彭青松；

【Author】 Wang Ronggui Zhang Yousheng Gao Jun Peng Qingsong Faculty of Computer Science and Technology, Hefei University of Technology, Hefei 230009

【机构】 合肥工业大学计算机科学与技术系；

【摘要】 本文研究三维现实场景中直角平顶房屋的屋顶、墙体、阴影在航空摄影时的投影性质,以及它们在航空影象中相应的二维几何特征。文中导出了若干有关的计算公式,使用这些公式可以做到:①算出三维现实场景中的直角在航空影象中的角度;②从航空影象中有关墙体和阴影的二维特征信息算出平行投影中的视角参数以及三维现实场景中房屋高度、日照方向等。更多还原

【Abstract】 In this paper, we have presented the properties of roofs, walls and shadows of the buildings with right angle and plan roofs in the formulation process of aerial images, and then a few related computation formulae are educed. These formulae are useful in the following aspects: ①computing the projected angle in aerial image, which is a right angle in the real 3D scene; ②computing the tilt angle of parallel projection parameter, and the height of building, the direction of illumination, etc.更多还原