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Assessing post apartheid settlement growth patterns using remote sensing and GIWS: A case study of Cape Town metropolitan area

Author: Pillay, DL ; Sebake, MD Date: Nov 2008 The significant land-use change in South African metropolitan areas, due to urbanization, created challenges of spatial development planning, infrastructure and service provision. This paper outlines the change detection analysis method applied ... Read more
Impacts of HIV/AIDS mortality on food security and natural resource utilisation in rural South Africa

Author: Mambo, J Date: Mar 2012 AIDS mortality, its linkages as a determinant and consequence of food security and its impact on natural resource utilisation by mainly rural populations, has not been well researched, especially their effects on rural livelihoods. Determining ... Read more
Implementation and testing of WELD and automatic spectral rule-based classifications for Landsat ETM+ in South Africa

Author: Wessels, Konrad J ; Salmon, BP ; Van den Bergh, F ; Steenkamp, Karen C ; Kleynhans, W ; Swanepoel, D ; Kleyn, L ; Roy, DP ; Kovalskyy, V Date: Apr 2013 The Web-enabled Landsat Data (WELD) system was successfully installed in South Africa (SA) and used for pre-processing large amounts of Landsat ETM+ data to composited seasonal mosaics. In pursuit of automated land cover mapping, the overall ... Read more
Influence of composite period and date of observation on phenological metrics extracted from MODIS data

Author: Wessels, Konrad J ; Bachoo, AK ; Archibald, S Date: May 2009 Deriving date-specific phenometrics from different multi-day MODIS composite data can potentially yield very different results. The objectives of this study were therefore to quantify the differences between (i) using 8-day vs. 16-day MODIS ... Read more
A multi-tier higher order Conditional Random Field for land cover classification of multi-temporal multi-spectral Landsat imagery

Author: Salmon, BP ; Kleynhans, W ; Olivier, JC ; Schwegmann, CP ; Olding, WC Date: Jul 2015 In this paper the authors present a 2-tier higher order Conditional Random Field which is used for land cover classification. The Conditional Random Field is based on probabilistic messages being passed along a graph to compute efficiently ... Read more
Using an active contour method to detect bilge dumps from SAR imagery

Author: Mdakane, Lizwe W ; Kleynhans, Waldo ; Schwegmann, Colin P Date: Jul 2016 An automatic approach to detect bilge dumping in synthetic aperture radar (SAR) images over Southern African oceans is proposed. The approach uses a threshold-based algorithm and a region-based active contour model (ACM) algorithm to achieve ... Read more
Using SensorML to describe scientific workflows in distributed web service environments

Author: Van Zyl, TL ; Vahed, Anwar ; Mcferren, GA ; Shabangu, P ; Cwele, B Date: Jul 2009 Scientific Workflows provides a technology that facilitates researchers by allowing them to capture in a machine processable manner the method relating to some research. This increases both provenance and repeatability of the research and ... Read more
Using SensorML to describe scientific workflows in distributed web service environments

Author: Van Zyl, TL ; Vahed, Anwar ; Mcferren, GA ; Shabangu, P ; Cwele, B Date: Jul 2009 Scientific Workflows provides a technology that facilitates researchers by allowing them to capture in a machine processable manner the method relating to some research. This increases both provenance and repeatability of the research and ... Read more

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Browsing by Subject "Remote Sensing"

Browsing by Subject "Remote Sensing"

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