Road classification systems are the basis for defining function and, in turn, the design criteria for the world’s street networks. The traditional classification systems have been based on the mobility and access functions of roads for motor vehicle traffic. Other road users and road uses have been largely ignored in this important step of the road design process. This article describes alterna...

This article addresses the problem of street extraction in high resolution images from a topologically correct graph of the network. The extraction algorithm makes use of specific active contours (snakes) combined with a multiresolution analysis (MRA). The use of the MRA for computing the snake’s energy enables to increase the convergence of the algorithm by minimizing the problem of noise (veh...

Quality, Safety and Informatics Research Group, Clinical and Population Sciences and Education Division, University of Dundee, Mackenzie Building, Dundee DD2 4BF, UK, Academic Unit of General Practice & Primary Care, University of Glasgow, 1 Horselethill Road, Glasgow G12 9LX, UK, RCGP Scotland, 25 Queen Street, Edinburgh EH2 1JX, UK and Primary Care Research Unit, Department of General Practic...

Department of Psychology, Stellenbosch University, Private Bag X1, Matieland 7602, Cape Town, South Africa Personal Social Services Research Unit, London School of Economics and Political Science, Houghton Street, London WC2A 2AE, UK LSE Health, London School of Economics and Political Science, Houghton Street, London WC2A 2AE, UK Peterborough Child Development Centre, City Care Centre, Thorpe ...

Address: 1Department of Pharmacology, University of Washington, 1959 NE Pacific Street, Seattle, WA 98195, USA, 2Department of Pathology, University of Washington, 1959 NE Pacific Street, Seattle, WA 98195, USA, 3Department of Physiology & Biophysics, University of Washington, 1959 NE Pacific Street, Seattle, WA 98195, USA and 4Department of Pathology and Laboratory Medicine, University of Nort...

1Department of Medicine, University of Western Ontario, 339 Windermere Road, London, ON, Canada N6A 5A5 2Division of Endocrinology and Metabolism, St. Joseph’s Hospital, 268 Grosvenor Street, London, ON, Canada N6A 4V2 3Department of Epidemiology and Biostatistics, McMaster University, 1280 Main Street West, Hamilton, ON, Canada L8S 4K1 4Department of Medicine, McMaster University, 1280 Main St...