Example-Driven Procedural Urban Roads

Synthesizing and exploring large‐scale realistic urban road networks is beneficial to 3D content creation, traffic animation and urban planning. In this paper, we present an interactive tool that allows untrained users to design roads with complex realistic details and styles. Roads are generated by...

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Bibliographic Details
Published in:Computer graphics forum Vol. 35; no. 6; pp. 5 - 17
Main Authors: Nishida, G., Garcia-Dorado, I., Aliaga, D. G.
Format: Journal Article
Language:English
Published: Oxford Blackwell Publishing Ltd 01.09.2016
Subjects:
3-D graphics
Analysis
Animation
Computer graphics
example-based modeling
Graphs
I.3.5 [Computer Graphics]: Computational Geometry and Object Modelling-I.3.6 [Computer Graphics]: Methodology and Techniques
Preserves
procedural modeling
Roads
Roads & highways
street modeling
Studies
Terrain
Traffic engineering
Traffic flow
Urban areas
Urban planning
Visualization
ISSN:0167-7055, 1467-8659
Online Access:Get full text
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Summary:Synthesizing and exploring large‐scale realistic urban road networks is beneficial to 3D content creation, traffic animation and urban planning. In this paper, we present an interactive tool that allows untrained users to design roads with complex realistic details and styles. Roads are generated by growing a geometric graph. During a sketching phase, the user specifies the target area and the examples. During a growing phase, two types of growth are effectively applied to generate roads in the target area; example‐based growth uses patches extracted from the source example to generate roads that preserve some interesting structures in the example road networks; procedural‐based growth uses the statistical information of the source example while effectively adapting the roads to the underlying terrain and the already generated roads. User‐specified warping, blending and interpolation operations are used at will to produce new road network designs that are inspired by the examples. Finally, our method computes city blocks, individual parcels and plausible building and tree geometries. We have used our approach to create road networks covering up to 200 km2 and containing over 3500 km of roads. Synthesizing and exploring large‐scale realistic urban road networks is beneficial to 3D content creation, traffic animation and urban planning. In this paper, we present an interactive tool that allows untrained users to design roads with complex realistic details and styles. Roads are generated by growing a geometric graph. During a sketching phase, the user specifies the target area and the examples. During a growing phase, two types of growth are effectively applied to generate roads in the target area; example‐based growth uses patches extracted from the source example to generate roads that preserve some interesting structures in the example road networks; procedural‐based growth uses the statistical information of the source example while effectively adapting the roads to the underlying terrain and the already generated roads.
Bibliography:ArticleID:CGF12728
NSF - No. 1250232, 0964302, 1302172
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ISSN:0167-7055
1467-8659
DOI:10.1111/cgf.12728