[en] The motion of an observer in a given space produces a particular perception called motion perception. This has been defined by Gibson as the gradual changes in the rate of displacements of contour lines in the visual field of the observer. This paper describes a new approach intended for analysing the motion perspective in order to quantify the morphology of urban open spaces along routes. It is based on spherical projections, which provide the shape of the sky boundary around the observer. The projections are studied through their skeletons, which are continuous sets of curves obtained by a progressive thinning down of the shapes around their main saliencies. The proposed method uses these skeletons to follow the variations in the shape of the sky boundary between the successive views. Measures of these variations have been developed and applied in a range of simplified theoretical examples and a real field example in order to show that they succeeded in capturing significant variations in spherical projections.
Research Center/Unit :
LEPUR
Disciplines :
Architecture
Author, co-author :
Sarradin, François
Siret, Daniel
Couprie, Michel
Teller, Jacques ; Université de Liège - ULiège > Département Argenco : Secteur TLU+C > Urbanisme et aménagement du territoire
Language :
English
Title :
Comparing sky shape skeletons for the analysis of the visual dynamics along routes
Batty M, 2001, "Exploring isovist fields: space and shape in architectural and urban morphology" Environment and Planning B. Planning and Design 28 123-150
Benedikt M L, 1979, "To take hold of space: isovists and isovist fields" Environment and Planning B 6 47-65
Blum H, 1967, "A transformation for extracting new descriptors of shape", in Proceedings of Models for the Perception of Speech and Visual Form (MIT Press, Cambridge, MA) pp 362-380
Bosselmann P, 1998 Representation of Places: Reality and Realism in City Design (University of California Press, Berkeley, CA)
Carvalho R, Batty M, 2005, "Encoding geometric information in road networks extracted from binary images" Environment and Planning B: Planning and Design 32 pp 179-190
Choi S W, Seidel H P, 2001, "Hyperbolic Hausdorff distance for medial axis transform" Graphical Models 63 369-384
Couprie M, Zrour R, 2005, "Discrete bisector function and Euclidean skeleton", in Proceedings of Discrete Geometry for Computer Imagery (Springer, Berlin) 216-227
Cullen G, 1961 The Concise Townscape (Architectural Press, London)
Dubuisson M P, Jain A K, 1994, "A modified Hausdorff distance for object matching", in Proceedings of the 12th International Conference on Pattern Recognition pp 566-568
Durand F, Drettakis G, Puech C, 1996, "The 3D visibility complex: a new approach to the problems of accurate visibility", in Proceedings of the 7th Eurographics Workshop on Rendering (Rendering Techniques '96) pp 245-257
Durand F, Drettakis G, Puech C, 1997, "The visibility skeleton: a powerful and efficient multipurpose global visibility tool", in Proceedings of SIGGRAPH'97 pp 89-100
Fisher-Gewirtzman D, Wagner I, 2003, "A 3D visual method for comparative evaluation of dense built-up environments" Environment and Planning B: Planning and Design 30 575-587
Fisher-Gewirtzman D, Shach D, Wagner I A, Burt M, 2005, "View-oriented three-dimensional visual analysis models for the urban environment" Urban Design International 10 23-37
Gibson J J, 1950 The Perception of the Visual World (Houghton Mifflin, Boston, MA)
Klein P, Tirthapura S, Sharvit D, Kimia B, 2000, "A tree-edit distance for comparing simple, closed shapes", in Proceedings of the Symposium on Discrete Algorithm (SODA '00) pp 696-704
Koenderink J J, van Doorn A J, 1976, "The singularities of the visual mapping" BioCyber 24 51-59
Leymarie F, Boichis N, Airault S, Jamet O, 2005, "Semi-automatic road tracking" Proceedings of the Remote Sensing for Geography, Geology, Land Planning and Cultural Heritage Conference SPIE 2960, pp 84-95
Lynch K, Appleyard D, Myer J R, 1966 The View from the Road (MIT Press, Cambridge, MA)
Peponis J, Wineman J, Raschid M, Kim S H, Bafna S, 1997, "On the description of shape and spatial configuration inside buildings: convex partitions and their local properties" Environment and Planning B: Planning and Design 24 761-781
Pocchiola M, Vegter G, 1996, "The visibility complex" International Journal on Computational Geometry and Applications 6 279-308
Ratti C, Richens P, 2004, "Raster analysis of urban form" Environment and Planning B: Planning and Design 31 297-309
Rote G, 1991, "Computing the minimum Hausdorff distance between two point sets on a line under translation" Information Processing Letters 38 123-127
Rucklidge W, 1996 Efficient Visual Recognition Using the Hausdorff Distance (Springer, Berlin)
Sarradin F, Siret D, Teller J, 2003, "Visual urban space assessment from sky shape analysis", in Proceedings of EnviroInfo 2003 pp 231-238
Siddiqi K, Bouix S, Tannebaum A, Zucker S W, 2002, "Hamilton-Jacobi skeletons" International Journal of Computer Vision 48 215-231
Tek H, Kimia B B, 1999, "Perceptual organization via symmetry map and symmetry transforms", in Proceedings of the IEEE Conference on Computer Vision (ICCV'99) 2 2470-2477
Teller J, 2003, "A spherical metric for the field-oriented analysis of complex urban open spaces" Environment and Planning B Planning and Design 30 339-356
Teller J, Azar S, 2001, "Townscope Il: a computer system to support solar access decision making" Solar Energy Journal 70 187-200
Thiel E, 1994 Les Distances de Chanfrein en Analyse d'Images: Fondements et Applications PhD thesis, Université Joseph Fourier (Grenoble I), France
Thiel P, 1961, "A sequence experience notation for architectural and urban spaces" The Town Planning Review 32 33-52
Turner A, 2003, "Analysing the visual dynamics of spatial morphology" Environment and Planning B: Planning and Design 30 657-676
Turner A, Doxa M, O'Sullivan D, Penn A, 2001, "From isovists to visibility graphs: a methodology for the analysis of architectural space" Environment and Planning B: Planning and Design 28 103-121
