Case study: Mapping agricultural uses
by combining satellite and aerial imagery analysis
RMH was tasked by EKNA Services, Inc. to identify agricultural uses for an assessment of ditch irrigation systems throughout the state of Hawaii.
Several crops are spectrally independent, but positive identification is unclear without considerable ground assessment.
We ran semi-automated, object based classifications of multispectral satellite imagery from WorldView-2, acquired in 2011.
We conducted aerial surveys in 2014 to produce natural color ortho-mosaics at 4cm GSD, then used visual interpretation to identify crops and land use.
Final maps of crop types derived from satellite imagery were validated using aerial imagery as virtual groundtruthing