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Browsing by UP Author "Grobler, Trienko Lups"
Now showing items 1-7 of 7
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Grobler, Trienko Lups; Nunhokee, C.D.; Smirnov, Oleg M.; Van Zyl, A.J.; De Bruyn, A.G. (Oxford University Press, 2014-04)This work investigates a particular class of artefacts, or ghost sources, in radio in- terferometric images. Earlier observations with (and simulations of) the Westerbork Synthesis Radio Telescope (WSRT) suggested that ...
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Ackermann, Etienne Rudolph; Grobler, Trienko Lups; Kleynhans, Waldo; Olivier, Jan Corne; Salmon, Brian Paxton; Van Zyl, A.J. (Taylor & Francis, 2012-04)We use Cavalieri’s principle to develop a novel integration technique which we call Cavalieri integration. Cavalieri integrals differ from Riemann integrals in that non-rectangular integration strips are used. In this ...
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Grobler, Trienko Lups; Ackermann, Etienne Rudolph; Van Zyl, A.J.; Olivier, Jan Corne; Kleynhans, Waldo; Salmon, Brian Paxton (Institute of Electrical and Electronics Engineers, 2013-05)In this paper, a first order MODIS time series simulator, which uses a Colored Simple Harmonic Oscillator, is proposed. The simulated data can be used to augment data sets so that data intensive classification and change ...
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Kleynhans, Waldo; Salmon, Brian Paxton; Olivier, Jan Corne; Van den Bergh, Frans; Wessels, K.J. (Konrad); Grobler, Trienko Lups; Steenkamp, Karen C. (Institute of Electrical and Electronics Engineers, 2012)Human settlement expansion is one of the most pervasive forms of land cover change in the Gauteng province of South Africa. A method for detecting new settlement developments in areas that are typically covered by natural ...
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Grobler, Trienko Lups; Ackermann, Etienne Rudolph; Olivier, Jan Corne; Van Zyl, A.J. (Gusti); Kleynhans, Waldo (Institute of Electrical and Electronics Engineers, 2012-06)It is proposed that the time series extracted from moderate resolution imaging spectroradiometer satellite data be modeled as a simple harmonic oscillator with additive colored noise. The colored noise is modeled with ...
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Salmon, Brian Paxton; Kleynhans, Waldo; Van den Bergh, Frans; Olivier, Jan Corne; Marais, W.J.; Grobler, Trienko Lups; Wessels, K.J. (Konrad) (IEEE / Institute of Electrical and Electronics Engineers Incorporated, 2014-08)The extraction of information on land cover classes using unsupervised methods has always been of relevance to the remote sensing community. In this paper, a novel criterion is proposed, which extracts the inherent ...
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Grobler, Trienko Lups; Ackermann, Etienne Rudolph; Van Zyl, A.J.; Olivier, Jan Corne; Kleynhans, Waldo; Salmon, Brian Paxton (Institute of Electrical and Electronics Engineers, 2013-03)Human settlement expansion is one of the most pervasive forms of land cover change in South Africa. The use of Page’s Cumulative Sum Test is proposed as a method to detect new settlement developments in areas that were ...
Now showing items 1-7 of 7