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《Journal of Engineering Graphics》 2005-01
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Projection Properties of Building’s 3D Geometric Features in an Aerial Image

WANG Rong-gui, ZHANG You-sheng, GAO Jun, PENG Qing-song (School of Computer Science and Technology, Hefei University of Technology, Hefei 230009, China)  
This paper represents projection properties of roofs, walls and shadows of the buildings with right angle and flat roofs in 3D scene in the projection process of aerial images and educes some related computation formulae of two-dimensional geometric properties. These newly presented formulae are useful in the following aspects: ① to compute the projected angle for a right angle in 3D scene in an aerial image; ② to compute the view parameters of parallel projection in 3D scene such as tilt angle, height of building and direction of illumination, etc, from the two dimensional parameter information related to walls and shadows of buildings.
【Fund】: 国家自然科学基金资助项目(60175011;60375011);; 安徽省自然科学基金资助项目(03042207);; 安徽省优秀青年科技基金资助项目(04042044)
【CateGory Index】: TP391.41
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