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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 |
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Keywords: | autocorrelation, change detection, MODIS, time-series |
Research Division: | Engineering |
Research Group: | Electrical engineering |
Research Field: | Electrical engineering not elsewhere classified |
Objective Division: | Expanding Knowledge |
Objective Group: | Expanding knowledge |
Objective Field: | Expanding knowledge in engineering |
UTAS Author: | Salmon, BP (Dr Brian Salmon) |
UTAS Author: | Olivier, JC (Professor JC Olivier) |
ID Code: | 79451 |
Year Published: | 2012 |
Web of Science® Times Cited: | 16 |
Deposited By: | Engineering |
Deposited On: | 2012-09-12 |
Last Modified: | 2017-11-06 |
Downloads: | 0 |
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