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Browsing by Author "Van Den Bergh, F"

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  • Hauptfleisch, AC; Van Den Bergh, F; Bachoo, AK; Engelbrecht, AP (2006-11)
    The Anti-parallel edge Centerline Extractor (ACE) algorithm is designed to extract road networks from high resolution satellite images. The primary mechanism used by the algorithm to detect the presence of roads is a filter ...
  • Van Den Bergh, F; Holloway, Jennifer P; Pienaar, M; Koen, Renée; Elphinstone, CD; Woodborne, S (2008-06)
    The application of a methodology that proposes the use of spectral methods to inform the development of statistical forecasting models for cholera case data is explored in this paper. The seasonal behaviour of the target ...
  • Bachoo, A; Van Den Bergh, F; Gazendam, AD (ee Publishers, 2008-11)
    A single tile from the gridded MODIS products, spanning a region of interest of approximately 10° by 10°, is stored as an image containing close to six million pixels, with data in multiple spectral bands for each pixel. ...
  • Toudjeu, IT; Van Wyk, BJ; Van Wyk, MA; Van Den Bergh, F (Springer-Verlag Berlin Heidelberg, 2008-06)
    Traditionally, granulometries are obtained using a series of openings or closings with convex structuring elements of increasing size. Granulometries constitute a useful tool for texture and image analysis since they are ...
  • Van Wyk, BJ; Van Wyk, MA; Van Den Bergh, F (South African Institute of Electrical engineers, 2007-06)
    The concept of an Image Difference Spectrum, a novel tool for the extraction of global image information, is introduced. It is shown that Image Difference Spectra are fast alternatives to granulometric curves, also referred ...
  • Van Den Bergh, F; Udahemuka, G; Van Wyk, BJ (IEEE, 2009-07)
    A new active fire event detection algorithm for data collected with the Spinning Enhanced Visible and Infrared Imager (SEVIRI) sensor, based on the extended Kalman filter, is introduced. Instead of using the observed ...
  • Cooper, Antony K; Greben, JM; Van Den Bergh, F; Gledhill, Irvy MA; Cannoo, BR; Steyn, WJVDM; De Villiers, R (South African Conference on Computational and Applied Mechanics SACAM08, 2008-03)
    A variety of armour units are used to protect breakwaters, piers and other harbour infrastructure, serving both to absorb the impact of violent seas and to reduce overtopping. A common type of armour unit is the dolos. ...
  • Udahemuka, G; Van Den Bergh, F; Van Wyk, BJ; Van Wyk, MA (18th Annual Symposium of the Pattern Recognition Association of South Africa (PRASA), 2007-11)
    Land surface temperatures (LSTs) can be approximated from brightness temperatures observed from satellites. Estimation errors between observed brightness temperatures and a brightness temperature model of a given pixel ...