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Benthic cover map of Heron Reef derived from a high-spatial-resolution multi-spectral satellite image using object based image analysis

The University of Queensland
Associate Professor Chris Roelfsema (Aggregated by) Associate Professor Chris Roelfsema (Aggregated by) Professor Stuart Phinn (Aggregated by) Professor Stuart Phinn (Aggregated by) Roelfsema, Christiaan (Aggregated by)
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ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=info:doi10.1594/PANGAEA.789968&rft.title=Benthic cover map of Heron Reef derived from a high-spatial-resolution multi-spectral satellite image using object based image analysis&rft.identifier=10.1594/PANGAEA.789968&rft.publisher=The University of Queensland&rft.description=Providing accurate maps of coral reefs where the spatial scale and labels of the mapped features correspond to map units appropriate for examining biological and geomorphic structures and processes is a major challenge for remote sensing. The objective of this work is to assess the accuracy and relevance of the process used to derive geomorphic zone and benthic community zone maps for three western Pacific coral reefs produced from multi-scale, object-based image analysis (OBIA) of high-spatial-resolution multi-spectral images, guided by field survey data. Three Quickbird-2 multi-spectral data sets from reefs in Australia, Palau and Fiji and georeferenced field photographs were used in a multi-scale segmentation and object-based image classification to map geomorphic zones and benthic community zones. A per-pixel approach was also tested for mapping benthic community zones. Validation of the maps and comparison to past approaches indicated the multi-scale OBIA process enabled field data, operator field experience and a conceptual hierarchical model of the coral reef environment to be linked to provide output maps at geomorphic zone and benthic community scales on coral reefs. The OBIA mapping accuracies were comparable with previously published work using other methods; however, the classes mapped were matched to a predetermined set of features on the reef.&rft.creator=Associate Professor Chris Roelfsema&rft.creator=Associate Professor Chris Roelfsema&rft.creator=Professor Stuart Phinn&rft.creator=Professor Stuart Phinn&rft.creator=Roelfsema, Christiaan&rft.date=2012&rft.coverage=152.022454,-23.405524 151.891235,-23.405524 151.891235,-23.482180 152.022454,-23.482180 152.022454,-23.405524&rft_rights=2012, University of Queensland&rft_rights= http://creativecommons.org/licenses/by/3.0/deed.en_US&rft_subject=eng&rft_subject=Benthic community zone&rft_subject=Geomorphic zone&rft_subject=Heron Reef&rft_subject=PHYSICAL GEOGRAPHY AND ENVIRONMENTAL GEOSCIENCE&rft_subject=EARTH SCIENCES&rft.type=dataset&rft.language=English Access the data
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s.phinn@uq.edu.au

Full description

Providing accurate maps of coral reefs where the spatial scale and labels of the mapped features correspond to map units appropriate for examining biological and geomorphic structures and processes is a major challenge for remote sensing. The objective of this work is to assess the accuracy and relevance of the process used to derive geomorphic zone and benthic community zone maps for three western Pacific coral reefs produced from multi-scale, object-based image analysis (OBIA) of high-spatial-resolution multi-spectral images, guided by field survey data. Three Quickbird-2 multi-spectral data sets from reefs in Australia, Palau and Fiji and georeferenced field photographs were used in a multi-scale segmentation and object-based image classification to map geomorphic zones and benthic community zones. A per-pixel approach was also tested for mapping benthic community zones. Validation of the maps and comparison to past approaches indicated the multi-scale OBIA process enabled field data, operator field experience and a conceptual hierarchical model of the coral reef environment to be linked to provide output maps at geomorphic zone and benthic community scales on coral reefs. The OBIA mapping accuracies were comparable with previously published work using other methods; however, the classes mapped were matched to a predetermined set of features on the reef.

Issued: 2012

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152.02245,-23.40552 151.89124,-23.40552 151.89124,-23.48218 152.02245,-23.48218 152.02245,-23.40552

151.9568445,-23.443852

Subjects
Benthic community zone | Earth Sciences | Geomorphic zone | Heron Reef | Physical Geography and Environmental Geoscience | eng |

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Other Information
Multiscale, object-based image analysis for mapping geomorphic and ecological zones on coral reefs

local : UQ:266039

Phinn, Stuart R., Roelfsema, Chris M. and Mumby, Peter J. (2012). Multiscale, object-based image analysis for mapping geomorphic and ecological zones on coral reefs. International Journal of Remote Sensing, 33 (12), 3768-3797. doi: 10.1080/01431161.2011.633122

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local : UQ:289097

School of Geography, Planning and Environmental Management Publications

local : UQ:161208

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