Author:Dudeni, N; Debba, PraveshDate:Aug 2009Deterministic and stochastic measures of spectral similarity are essential for determining both the geometric characteristics of spectra and variability, respectively. Deterministic measures such as Spectral Angle Mapper (SAM) are useful in ...Read more
Author:Debba, PraveshDate:Jul 2009This presentation to the SASA Eastern Cape Chapter at Rhodes University studies the variability within a species class and the variability between the species classes of seven spectrally similar tree species and presents ways in which the ...Read more
Author:Cho, Moses A; Mathieu, Renaud SA; Debba, PraveshDate:Aug 2009Differences in within-species phenology and structure driven by factors including topography, edaphic properties, and climatic variables across the landscape present important challenges to species differentiation with remote sensing. The ...Read more
Author:Debba, Pravesh; Cho, Moses A; Mathieu, Renaud SADate:Aug 2009This paper uses simulated annealing and focus on the spectral angle mapper (SAM), to demonstrate how the separability of two mean spectra from different species can be increased by choosing the bands that maximize the metric. It is known that ...Read more
Author:Malherbe, Johan; Engelbrecht, FA; Landman, WADate:Mar 2014Synoptic weather data and rainfall records are used to support previous suggestions that the decadal-scale cycle in certain climate records may be attributed to the modulation in tidal forcing related to the 18.6 year lunar nodal cycle. The ...Read more
Author:Beraki, Asmerom F; Landman, WADate:Sep 2013The interannual and decadal variability of the Southern Annual Mode (SAM) was examined in the ECHAM 4.5-MOM3-SA ocean-atmosphere coupled general circulation model (OAGCM). The analysis placed emphasis on the behavior of the SAM when its ...Read more
Author:Dudeni, N; Debba, Pravesh; Cho, Moses A; Mathieu, Renaud SADate:Aug 2009In vegetation spectroscopy, compositional information of leaves contained at band level or across the electromagnetic spectrum (EMS) and parts thereof, plays a huge rule in the analysis of spectra and their relations to the reflectance patterns ...Read more