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Remote Sens. 2019, 11(3), 236; https://doi.org/10.3390/rs11030236

3D Viewpoint Management and Navigation in Urban Planning: Application to the Exploratory Phase

1
Geomatics Unit, Liège University (ULiege), Quartier Agora, Allée du Six-Août, 19, 4000 Liège, Belgium
2
Department of Geomatics Sciences, Laval University, Pavillon Louis-Jacques-Casault 1055, Avenue du Séminaire, Bureau 1315, Québec, QC G1V 5C8, Canada
*
Author to whom correspondence should be addressed.
Received: 23 November 2018 / Revised: 17 January 2019 / Accepted: 22 January 2019 / Published: 23 January 2019
(This article belongs to the Special Issue Remote Sensing-Based Urban Planning Indicators)
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Abstract

3D geovisualization is essential in urban planning as it assists the analysis of geospatial data and decision making in the design and development of land use and built environment. However, we noted that 3D geospatial models are commonly visualized arbitrarily as current 3D viewers often lack of design instructions to assist end users. This is especially the case for the occlusion management in most 3D environments where the high density and diversity of 3D data to be displayed require efficient visualization techniques for extracting all the geoinformation. In this paper, we propose a theoretical and operational solution to manage occlusion by automatically computing best viewpoints. Based on user’s parameters, a viewpoint management algorithm initially calculates optimal camera settings for visualizing a set of 3D objects of interest through parallel projections. Precomputed points of view are then integrated into a flythrough creation algorithm for producing an automatic navigation within the 3D geospatial model. The algorithm’s usability is illustrated within the scope of a fictive exploratory phase for the public transport services access in the European quarter of Brussels. Eventually, the proposed algorithms may also assist additional urban planning phases in achieving their purposes. View Full-Text
Keywords: 3D geovisualization; visualization pipeline; 3D geospatial data; virtual 3D city model; viewpoint; occlusion; camera; urban planning; planning activities; urban indicators 3D geovisualization; visualization pipeline; 3D geospatial data; virtual 3D city model; viewpoint; occlusion; camera; urban planning; planning activities; urban indicators
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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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Neuville, R.; Pouliot, J.; Poux, F.; Billen, R. 3D Viewpoint Management and Navigation in Urban Planning: Application to the Exploratory Phase. Remote Sens. 2019, 11, 236.

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