Preview

PDF 2Mb

We present a method for online detection of land cover change based on remotely sensed time series. Change is detected by monitoring deviations between observations and forecasts made using the time series historical data and similar time series in the geographical region. This method and several others were applied to MODIS 8-day surface reflectance data for problems of detecting settlement expansion in Limpopo Province, South Africa, and detecting deforestation in New South Wales, Australia. The proposed method had significantly shorter median detection delay (DD) for equivalent rates of false alarms compared with the other evaluated methods. We obtained a median DD of seven samples for settlement detection and 14 samples for deforestation detection corresponding to 56 days and 112 days, respectively. This is compared with a median DD of 224 and 544 days for the best other methods evaluated. We suggest that the proposed method is an excellent candidate for land cover change detection where rapid detection is essential.

Item Type:	Refereed Article
Keywords:	remote sensing, change detection
Research Division:	Engineering
Research Group:	Electrical engineering
Research Field:	Electrical circuits and systems
Objective Division:	Environmental Policy, Climate Change and Natural Hazards
Objective Group:	Environmental policy, legislation and standards
Objective Field:	Environmental policy, legislation and standards not elsewhere classified
UTAS Author:	Olding, WC (Mr Willem Olding)
UTAS Author:	Olivier, JC (Professor JC Olivier)
UTAS Author:	Salmon, BP (Dr Brian Salmon)
ID Code:	133069
Year Published:	2019
Deposited By:	Engineering
Deposited On:	2019-06-06
Last Modified:	2020-01-14
Downloads:	7 View Download Statistics