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ISPRS Int. J. Geo-Inf. 2016, 5(8), 128; doi:10.3390/ijgi5080128

An Integrated Simplification Approach for 3D Buildings with Sloped and Flat Roofs

Department of Geography, National University of Singapore, Singapore 117570
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Academic Editors: Martin Behnisch, Gotthard Meinel and Wolfgang Kainz
Received: 23 April 2016 / Revised: 21 June 2016 / Accepted: 11 July 2016 / Published: 23 July 2016
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Abstract

Simplification of three-dimensional (3D) buildings is critical to improve the efficiency of visualizing urban environments while ensuring realistic urban scenes. Moreover, it underpins the construction of multi-scale 3D city models (3DCMs) which could be applied to study various urban issues. In this paper, we design a generic yet effective approach for simplifying 3D buildings. Instead of relying on both semantic information and geometric information, our approach is based solely on geometric information as many 3D buildings still do not include semantic information. In addition, it provides an integrated means to treat 3D buildings with either sloped or flat roofs. The two case studies, one exploring simplification of individual 3D buildings at varying levels of complexity while the other, investigating the multi-scale simplification of a cityscape, show the effectiveness of our approach. View Full-Text
Keywords: simplification; overall appearance; global features; representative edges simplification; overall appearance; global features; representative edges
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Xie, J.; Feng, C.-C. An Integrated Simplification Approach for 3D Buildings with Sloped and Flat Roofs. ISPRS Int. J. Geo-Inf. 2016, 5, 128.

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