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Land cover change detection using autocorrelation analysis on MODIS time-series data: detection of new human settlements in the Gauteng Province of South Africa

Citation

Kleynhans, W and Salmon, BP and Olivier, JC and van den Bergh, F and Wessels, KJ and Grobler, TL and Steenkamp, KC, Land cover change detection using autocorrelation analysis on MODIS time-series data: detection of new human settlements in the Gauteng Province of South Africa, IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 5, (3) pp. 777 - 783. ISSN 1939-1404 (2012) [Refereed Article]

Copyright Statement

Copyright 2012 IEEE

DOI: doi:10.1109/JSTARS.2012.2187177

Abstract

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 vegetation using 500 m MODIS time-series satellite data is proposed. The method is a per pixel change alarm that uses the temporal autocorrelation to infer a change index which yields a change or no-change decision after thresholding. Simulated change data was generated and used to determine a threshold during an off-line optimization phase. After optimization the method was evaluated on examples of known land cover change in the study area and experimental results indicate a 92% change detection accuracy with a 15% false alarm rate. The method shows good performance when compared to a traditional NDVI differencing method that achieved a 75% change detection accuracy with a 24% false alarm rate for the same study area.

Item Details

Item Type:Refereed Article
Keywords:autocorrelation, change detection, MODIS, time-series
Research Division:Engineering
Research Group:Electrical and Electronic Engineering
Research Field:Electrical and Electronic Engineering not elsewhere classified
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in Engineering
Author:Salmon, BP (Dr Brian Salmon)
Author:Olivier, JC (Professor JC Olivier)
ID Code:79451
Year Published:2012
Web of Science® Times Cited:9
Deposited By:Engineering
Deposited On:2012-09-12
Last Modified:2017-11-06
Downloads:0

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