Human settlement expansion is one of the most pervasive forms of land-cover change in South Africa. The use of Page’s cumulative sum (CUSUM) test is proposed as a method to detect new settlement developments in areas that were previously covered by natural vegetation using 500-m Moderate Resolution Imaging Spectroradiometer time-series satellite data. The method is a sequential per-pixel change alarm algorithm that can take into account positive detection delay, probability of detection, and false-alarm probability to construct a threshold. Simulated change data were generated to determine a threshold during a preliminary offline optimization phase. After optimization, the method was evaluated on examples of known land-cover change in the Gauteng and Limpopo provinces of South Africa. The experimental results indicated that CUSUM performs better than band differencing in the before-mentioned study areas.
Reference:
Grobler, T.L., Ackermann, E.R., Van Zyl, A.J. et al. 2012. Using Page’s cumulative sum test on MODIS time series to detect land-cover changes. IEEE Geoscience and Remote Sensing Letters, vol. 10, no. 2, pp. 332-336. 10.1109/LGRS.2012.2205556
Grobler, T., Ackermann, E., Van Zyl, A., Olivier, J., Kleynhans, W., & Salmon, B. P. (2012). Using Page’s cumulative sum test on MODIS time series to detect land-cover changes. http://hdl.handle.net/10204/9198
Grobler, TL, ER Ackermann, AJ Van Zyl, JC Olivier, Waldo Kleynhans, and Brian P Salmon "Using Page’s cumulative sum test on MODIS time series to detect land-cover changes." (2012) http://hdl.handle.net/10204/9198
Grobler T, Ackermann E, Van Zyl A, Olivier J, Kleynhans W, Salmon BP. Using Page’s cumulative sum test on MODIS time series to detect land-cover changes. 2012; http://hdl.handle.net/10204/9198.
Copyright: 2012 IEEE. Due to copyright restrictions, the attached PDF file contains the post-print version of the article. For access to the full text item, please consult the publisher's website.
ResearchSpace
