id 
2006_132 
authors 
Guéna, François and LouisPaul Untersteller 
year 
2006 
title 
Towards a Sketching Tool for Architects: 3D Reconstruction of Polyhedron 
source 
Communicating Space(s) [24th eCAADe Conference Proceedings / ISBN 0954118359] Volos (Greece) 69 September 2006, pp. 132135 
summary 
This paper presents a tool for assisting 3D modeling from perspective projections. The proposed system uses a projective geometry engine capable of rebuilding a 3D model from a set of lines and geometric constraints. A dialogue interface assists the user in expressing geometric constraints. The system finds out the relevant geometrical components in the sketch and automatically posts the constraints. The system is limited to rebuilding polyhedrons. If we can deduce, from a perspective sketch of a polyhedron, the planar constraints of the faces and the parallelism constraints of the edges that meet in the same vanishing points, the geometric engine will be able to build a 3D model of the polyhedron. 
keywords 
sketching; 3D reconstruction; projective geometry 
series 
eCAADe 
email 
fguena@parislavillette.archi.fr 
full text 
file.pdf (256,079 bytes) 
references 
Contenttype: text/plain

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last changed 
2006/08/16 16:54 
