A rigorous definition of axial lines: ridges on isovist fields

Details A rigorous definition of axial lines: ridges on isovist fields A rigorous definition of axial lines: ridges on isovist fields

2003-11-12

arxiv.org/abs/cs/0311012v1

Computer Science

Computer Vision and Pattern Recognition

18 pages, 5 figures

Scientific paper

We suggest that 'axial lines' defined by (Hillier and Hanson, 1984) as lines of uninterrupted movement within urban streetscapes or buildings, appear as ridges in isovist fields (Benedikt, 1979). These are formed from the maximum diametric lengths of the individual isovists, sometimes called viewsheds, that make up these fields (Batty and Rana, 2004). We present an image processing technique for the identification of lines from ridges, discuss current strengths and weaknesses of the method, and show how it can be implemented easily and effectively.

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