Case study: Mapping agricultural uses
by combining satellite and aerial imagery analysis
The Challenge
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RMH was tasked by EKNA Services, Inc. to identify agricultural uses for an assessment of ditch irrigation systems throughout the state of Hawaii.
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Several crops are spectrally independent, but positive identification is unclear without considerable ground assessment.
RMH Solution
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We ran semi-automated, object based classifications of multispectral satellite imagery from WorldView-2, acquired in 2011.
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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.
Results
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Final maps of crop types derived from satellite imagery were validated using aerial imagery as virtual groundtruthing
Aerial imagery at 4cm GSD
Object-based classification of satellite imagery
Aerial imagery at 4cm GSD
Object-based classification of satellite imagery
Aerial imagery at 4cm GSD
Object-based classification of satellite imagery