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Modeling Urban Structures Using Graph-Based Spatial Patterns

Summary: Modeling Urban Structures Using
Graph-Based Spatial Patterns
Emel Dogrus¨oz and Selim Aksoy
Department of Computer Engineering
Bilkent University
Bilkent, 06800, Ankara, Turkey
Abstract--We introduce a new method for modeling the spatial
arrangements of geospatial objects. As opposed to the existing
approaches that are based on classifying images using pixel level
methods, we propose to use objects as textural primitives and
exploit their spatial patterns. First, the primitives are detected us-
ing spectral and morphological processing. Then, these primitives
form the nodes of a graph where the neighborhood information is
obtained through Voronoi tessellation of the image scene. Next,
this graph is clustered by thresholding its minimum spanning
tree. Finally, the resulting clusters are classified as regular or
irregular by examining the distributions of the angles between
neighboring nodes. Experiments using Ikonos images show that
the application of the proposed model where buildings are used as


Source: Aksoy, Selim - Department of Computer Engineering, Bilkent University


Collections: Computer Technologies and Information Sciences