Skip to main content

Right-Angle Rooftop Polygon Extraction in Regularised Urban Areas: Cutting the Corners

Buy Article:

$48.00 plus tax (Refund Policy)



Rapid urban development is achieved in some areas by the application of industrialized construction techniques. This approach creates extensive ‘‘regularised’’ urban areas, which are governed by a small set of building models. This paper describes a scheme for building rooftop extraction from aerial and high resolution satellite imagery that makes use of the characteristics of regularised urban areas. As the scheme is based on a bottom-up approach, emphasis is put on reducing the number of low-level features that should be considered during the polygon rooftop extraction. This is achieved with a set of geometric rules, which are defined based on the geometry of the building model. Experiments with real-world imagery show that this basis provides efficient filtering of the right-angle corners, thus improving the overall extraction performance.

Keywords: Hough transform; building extraction; corner detection; cross-ratio invariance; right-angle graph

Document Type: Research Article


Affiliations: ( ) Technion—Israel Institute of Technology, Haifa, Email:

Publication date: December 1, 2004


Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more