1. a The Centre for Remote Sensing and Spatial Information Science, School of Geography, Planning and Architecture , The University of Queensland , Brisbane , QLD 4072 , Australia
2. b Remote Sensing Centre, Natural Resource Sciences , Department of Natural Resources and Water , 80 Meiers Road Indooroopilly, QLD 4068 , Australia
3. c School of Physical Sciences , The University of Queensland , Brisbane , QLD 4072 , Australia