Using Page%26apos;s Cumulative Sum Test on MODIS Time Series to Detect Land-Cover Changes

作者：Grobler T L^*; Ackermann E R; van Zyl A J; Olivier J C; Kleynhans W; Salmon B P

来源：IEEE Geoscience and Remote Sensing Letters, 2013, 10(2): 332-336.

DOI：10.1109/LGRS.2012.2205556

• Cumulative sum
• hypertemporal and sequential change detection
• Moderate Resolution Imaging Spectroradiometer (MODIS)

Human settlement expansion is one of the most pervasive forms of land-cover change in South Africa. The use of Page%26apos;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.

• 出版日期2013-3