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

id ddss2004_ra-325
authors Rodrigues, D.S., L.C.L. Souza, and J.F.G. Mendes
year 2004
title Enhancing 3DSkyView Extension Performance
source Van Leeuwen, J.P. and H.J.P. Timmermans (eds.) Recent Advances in Design & Decision Support Systems in Architecture and Urban Planning, Dordrecht: Kluwer Academic Publishers, ISBN: 1-4020-24088, p. 325-340
summary This paper presents a second version of the 3DSkyView extension. The purpose of that extension was to implement a calculation algorithm for assessment and visualization of sky view factors (SVF) by means of tools available in a Geographical Information System (GIS). The sky view factor is a thermal and geometric parameter pointed out in the specialized literature as one of the main causes of urban heat islands. A 3D-GIS is a powerful tool for reaching the goal of this research because it allows the storage, treatment and analysis of tri-dimensional urban data, in addition to a high level of flexibility for incorporating calculation algorithms. The objective in the 3DSkyView extension is to optimize the determination of that factor, not only reducing its demanding calculation and graphical representation time, but also generating a simplified tool for replacing expensive photographic equipment usually applied on this matter. Enhancing functions of ArcView GIS 3.2, the first version of that extension showed a very good performance allowing the automatic delineation and determination of SVF. That performance was although limited to a single observer point. The simulation of SVF for several view points in urban canyons was only possible by applying the extension as many times as the number of observers considered. Therefore, this second version was now developed in order to allow simultaneous determination of SVF for many view points. In addition, the 3DSkyView new interface is more flexible, in a way that the user may choose the kind of output wanted (graphical and/or tabular). With this new feature it is then easier to create a continuous SVF map for an entire area.
keywords Sky View Factor, Urban Geometry, GIS Extension, Urban Heat Island
series DDSS
full text file.pdf (1,268,721 bytes)
references Content-type: text/plain
details citation check to select
100%; open Bärring, L., J.O. Mattsson, and S. Lindqvist (1985) Find in CUMINCAD Canyon geometry, street temperatures and urban heat island in Malmö, Sweden , Journal of Climatology, (5), p. 433-444
100%; open Chapman, L., J.E Thornes, and A.V. Bradley (2001) Find in CUMINCAD Rapid determination of canyon geometry parameters for use in surface radiation budgets , Theoretical and Applied Climatology. 69, p. 81-89. Available in: http://www.cert.bham.ac.uk/research/urgent/canyongeometry.pdf
100%; open Chapman, Lee (2000) Find in CUMINCAD Improved one dimensional energy balance modeling utilizing sky-view factors determined from digital imagery , Proceedings of the 10th SIRWEC Conference, Davos, Switzerland. Available in: http://www.sirwec.org/conferences/davos2000.html
100%; open Johnson, G.T. and I.D.Watson (1984) Find in CUMINCAD The determination of view-factors in urban canyons , Journal of Climate and Applied Meteorology, (23), p.329-335
100%; open Oke, T.R. (1981) Find in CUMINCAD Canyon geometry and the nocturnal urban heat island: comparison of scale model and field observations , Journal of Climatology, 1(1-4), p.237-254
100%; open Oke, T.R. (1988) Find in CUMINCAD Street design and urban canopy layer climate , Energy and Buildings, 11(13), p.103-113
100%; open Ratti, C.F. and P. Richens (1999) Find in CUMINCAD Urban texture analysis with image processing techniques , Proceedings of the CAADFutures 99, Atlanta, USA, Kluwer Academic Publishers
100%; open Souza, L.C.L, D. S. Rodrigues, and J.F.G. Mendes (2003) Find in CUMINCAD A 3D-GIS extension for sky view factors assessment in urban environment , Proceedings of the 8th International Conference on Computers in Urban Planning and Urban Management – CUPUM 2003, Sendai, Japan, p. 27-29
100%; open Souza, L.C.L. (1996) Find in CUMINCAD The influence of urban geometry on air temperatures at the pedestrian level , PhD Dissertation. University of São Paulo, São Carlos. 125 p (in Portuguese)
100%; open Steyn, D.G. (1980) Find in CUMINCAD The calculation of view factors from fisheye-lens photographs , Atmosphere-Ocean, 18(3), p.254-258

last changed 2004/07/03 20:13
HOMELOGIN (you are user _anon_272959 from group guest) Works Powered by SciX Open Publishing Services 1.002