Generating Orthorectified Multi-Perspective 2.5D Maps to Facilitate Web GIS-Based Visualization and Exploitation of Massive 3D City Models

作者:Liang, JM (Liang, Jianming)[ 1,2 ] ; Gong, JH (Gong, Jianhua)[ 1,2 ] ; Liu, J (Liu, Jin)[ 1,3,4 ] ; Zou, YL (Zou, Yuling)[ 2 ] ; Zhang, JM (Zhang, Jinming)[ 1,5 ] ; Sun, J (Sun, Jun)[ 1,2 ] ; Chen, SS (Chen, Shuisen)[ 6 ]

ISPRS INTERNATIONAL JOURNAL OF GEO-INFORMATION

卷: 5  期: 11

文献号: 212

DOI: 10.3390/ijgi5110212

出版年: NOV 2016

摘要

2.5D map is a convenient and efficient approach to exploiting a massive three-dimensional (3D) city model in web GIS. With the rapid development of oblique airborne photogrammetry and photo-based 3D reconstruction, 3D city models are becoming more and more accessible. 3D Geographic Information System (GIS) can support the interactive visualization of massive 3D city models on various platforms and devices. However, the value and accessibility of existing 3D city models can be augmented by integrating them into web-based two-dimensional (2D) GIS applications. In this paper, we present a step-by-step workflow for generating orthorectified oblique images (2.5D maps) from massive 3D city models. The proposed framework can produce 2.5D maps from an arbitrary perspective, defined by the elevation angle and azimuth angle of a virtual orthographic camera. We demonstrate how 2.5D maps can benefit web-based visualization and exploitation of massive 3D city models. We conclude that a 2.5D map is a compact data representation optimized for web data streaming of 3D city models and that geometric analysis of buildings can be effectively conducted on 2.5D maps.

通讯作者地址: Gong, JH (通讯作者)

Chinese Acad Sci, Inst Remote Sensing & Digital Earth, State Key Lab Remote Sensing Sci, Beijing 100101, Peoples R China.

通讯作者地址: Gong, JH (通讯作者)

Zhejiang CAS Applicat Ctr Geoinformat, Jiashan 314100, Zhejiang, Peoples R China.

地址:

[ 1 ] Chinese Acad Sci, Inst Remote Sensing & Digital Earth, State Key Lab Remote Sensing Sci, Beijing 100101, Peoples R China

[ 2 ] Zhejiang CAS Applicat Ctr Geoinformat, Jiashan 314100, Zhejiang, Peoples R China

[ 3 ] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[ 4 ] Natl Marine Data & Informat Serv, Tianjin 300171, Peoples R China

[ 5 ] Informat Engn Univ, Inst Geospatial Informat, Zhengzhou 450052, Peoples R China

[ 6 ] Guangzhou Inst Geog, Guangdong Open Lab Geospatial Informat Technol &, Guangzhou 510070, Guangdong, Peoples R China