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Browsing by Author "Van Wyk, BJ"

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Note on difference spectra for fast extraction of global image information.

Author: Van Wyk, BJ ; Van Wyk, MA ; Van Den Bergh, F Date: Jun 2007 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 to as pattern ... Read more
Optimal control of transmission power management in wireless backbone mesh networks

Author: Olwal, TO ; Djouani, K ; Van Wyk, BJ ; Hamam, Y ; Siarry, P Date: Jan 2011 This chapter proposes a scalable singularly perturbed weakly-coupled TPM which is supported at the LL of the network protocol stack. Firstly, the WMN is divided into sets of unified channel graphs (UCGs). A UCG consists of multiple radios, ... Read more
Potential fire detection based on Kalman-driven change detection

Author: Van Den Bergh, F ; Udahemuka, G ; Van Wyk, BJ Date: Jul 2009 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 temperatures of the spatial ... Read more
Range based power control for multi-radio multi-channel wireless mesh networks

Author: Olwal, TO ; Van Wyk, BJ ; Djouani, K ; Hamam, Y ; Siarry, P ; Ntlatlapa, Ntsibane S Date: Aug 2009 Multi-Radio Multi-Channel (MRMC) systems are key to power control problems in Wireless Mesh Networks (WMNs). In this paper, researchers present a range based dynamic power control for MRMC WMNs. First, WMN is represented as a set of disjoint ... Read more
Robust fitting of diurnal brightness temperature cycle

Author: Udahemuka, G ; Van Den Bergh, F ; Van Wyk, BJ ; Van Wyk, MA Date: Nov 2007 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 would provide information ... Read more
Scalable power selection method for wireless mesh networks

Author: Olwal, TO ; Van Wyk, BJ ; Hamam, Y ; Ntlatlapa, Ntsibane S Date: 2009 This paper addresses the problem of a scalable dynamic power control (SDPC) for wireless mesh networks (WMNs) based on IEEE 802.11 standards. An SDPC model that accounts for architectural complexities witnessed in multiple radios and hops ... Read more
Transmission probability-based dynamic power control for multi-radio mesh networks

Author: Olwal, TO ; Ntlatlapa, Ntsibane S ; Hamam, Y ; Aron, F ; Van Wyk, BJ ; Johnson, DL Date: Sep 2008 This paper presents an analytical model for the selection of the transmission power based on the bi-directional medium access information. Most of dynamic transmission power control algorithms are based on the single directional channel and ... Read more

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Browsing by Author "Van Wyk, BJ"

Browsing by Author "Van Wyk, BJ"

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All of ResearchSpace

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