CumInCAD is a Cumulative Index about publications in Computer Aided Architectural Design
supported by the sibling associations ACADIA, CAADRIA, eCAADe, SIGraDi, ASCAAD and CAAD futures

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_id 077a
authors Boucard, D., Huot, S., Colin, Ch., Hégron, G. and Siret, D.
year 2002
title An Image-based and Knowledge-based System for Efficient Architectural and Urban Modeling
source Thresholds - Design, Research, Education and Practice, in the Space Between the Physical and the Virtual [Proceedings of the 2002 Annual Conference of the Association for Computer Aided Design In Architecture / ISBN 1-880250-11-X] Pomona (California) 24-27 October 2002, pp. 229-238
summary In this paper, we present two user-centered systems aiming at making easier the modeling ofarchitectural and urban scenes by using two different but complementary approaches. The first oneMArINa, an image-based modeler, allows the user to reconstruct urban scenes from one or moregraphical documents. This method focuses more on reconstructing models and is more dedicated tothe production of 3D sketches. The second modeler, MArCo is a knowledge-based modelercontaining the know-from and know-how on classical architecture. It allows the user to modelclassical architectural scenes verifying automatically all the domain rules. Finally, we show howMArINa and MArCo can cooperate providing the user a tool combining efficiently their respectivecapabilities.
series ACADIA
email Didier.Boucard@emn.fr
last changed 2003/11/21 14:16

_id 8e9c
authors Sosnov, A., Macé, P. and Hégron, G.
year 2002
title Semi-metric formal 3D reconstruction from perspective sketches
source Proceedings of International Conference on Computational Science (ICCS), pp. 285-294, Amsterdam, The Netherlands
summary We present a new approach for accurate and fast reconstruction of 3D models from hand-drawn perspective sketches and imposed geometric constraints. A distinctive feature of the approach is the decomposition of the reconstruction process into the stages of correction of the 2D sketch and elevation of the 3D model. All 3D constraints that describe the spatial structure of the model are strictly satisfied, while preferences that describe the model projection are treated in relaxed manner. The constraints are subdivided into the projective, affine and metric ones and expressed in algebraic form by using the Grassmann-Cayley algebra. The constraints are resolved one by another following the order of their types by using the local propagation methods. The preferences allow to apply linear approximations and to systematically use formal methods.
series other
last changed 2003/04/23 13:50

_id 2006_650
id 2006_650
authors Tourre, Vincent; Jean-Yves Martin and Gérard Hégron
year 2006
title Expression of luminous ambience intention in CAAD
source Communicating Space(s) [24th eCAADe Conference Proceedings / ISBN 0-9541183-5-9] Volos (Greece) 6-9 September 2006, pp. 650-655
summary This paper presents a research in progress dedicated to the development of a Computer Aided Architectural Design (CAAD) tool, which integrates design by ambience intention concept. A digital design by ambience intention framework is proposed, allowing intention expression of daylighting ambience through scene lighting properties. Lighting descriptors are introduced to represent theses properties, and combined to produce a lighting constraint set. These constraints are intended to be used in an inverse lighting model to compute geometrical raw solutions.
keywords Design by intention; Daylighting ambiance; Intention expression; CAAD tools; Inverse rendering
series eCAADe
email vincent.tourre@cerma.archi.fr
last changed 2006/08/16 16:54

_id ddss2008-14
id ddss2008-14
authors Zekri, Elyes; Gérard Hégron and Alain Legendre
year 2008
title Environmental Classification of Urban PedestrianWalkways
source H.J.P. Timmermans, B. de Vries (eds.) 2008, Design & Decision Support Systems in Architecture and Urban Planning, ISBN 978-90-6814-173-3, University of Technology Eindhoven, published on CD
summary This work is developed in the framework of urban design where we try to understand, to characterize then to qualify the environmental quality of urban open spaces along pedestrian walkways. So, we propose an analysis and a classification method applied to pedestrian walkways, taking into account their environmental characteristics. Analysis method is based on Discrete Wavelet Transform (DWT) in which we exploit the detailed version of the signal representing the evolution of a physical factor of environment along the walkway. This method leads to a segmentation of the signal. Then, a classification technique called Agglomerative Hierarchical Clustering (AHC) is performed to identify classes of walkways in terms of environmental features.
keywords Pedestrian walkways, physical factors of environment, wavelet, classification
series DDSS
last changed 2008/09/01 15:06

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