The automatic height extraction of buildings from shadow region

Jiang Min; Lai Shunnan; Li Sheng

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The automatic height extraction of buildings from shadow region

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摘要

Height extraction for buildings is a fundamental step of 3D scene reconstruction in many virtual reality applications.In this paper,we propose an automatic method to extract the height of buildings in high resolution satellite imagery based on the length of shadow.Taking into account the limitation of traditional algorithms,we make use of the boundary information of a building to facilitate detecting and matching the shadow regions with higher accuracy.Then,we introduce a shadow-cast model to correct the shadow location in our system.The experimental result shows that when extracting the height of buildings from complex urban regions,our method has better accuracy.

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《计算机辅助绘图设计与制造（英文版）》 |2016年第1期|7-14|共8页
作者
Jiang Min; Lai Shunnan; Li Sheng;
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作者单位

Peking University Shenzhen Graduate School, Shenzhen 518055, China;

Beijing Engineering Technology Research Center of Virtual Simulation and Visualization, Peking University, Beijing 100871, China;

School of EECS, Peking University, Beijing 100871, China;

School of EECS, Peking University, Beijing 100871, China;

Beijing Engineering Technology Research Center of Virtual Simulation and Visualization, Peking University, Beijing 100871, China;

Peking University Information Technology Institute(Tianjin Binhai), Tianjin 300452, China;

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The automatic height extraction of buildings from shadow region

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