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id sigradi2007_af07
authors Culagovski, Rodrigo
year 2007
title Three dimensional isovist analysis method [Método de Análisis Tridimensional con isovistas]
source SIGraDi 2007 - [Proceedings of the 11th Iberoamerican Congress of Digital Graphics] México D.F. - México 23-25 October 2007, pp. 174-176
summary This paper presents a three dimensional method of isovist analysis implemented in the MaxScript programming language. The script accepts as its input a standard three dimensional model of the buildings and terrain being analyzed, upon which a N×N grid is projected. Each square of this grid is assigned a height value, thereby producing a simplified surface description which is amenable to mathematical analysis. A three dimensional isovist is then generated for each grid square, by placing an observation point 1.5 meters above its center and finding the intersection of a series of rays from this point to the input model. The distance from the observation point to the intersection is summed over for all the angles studied giving a compound isovist measurement for the grid square under consideration.
keywords Isovist; viewshed; analysis; model; volumetric; visibility
series SIGRADI
email rodrigo@culagovski.net
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100%; open Davis, L. And Benedikt, M. (1979) Find in CUMINCAD Computational models of space: Isovists and isovist fields, , Computer Graphics Image Processing. 11(1), pp. 49-72

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