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| Titel: |
Marine habitat mapping using data from the Geoscan airborne multi-spectral scanner |
| Auteur: |
Ong, Cindy Hick, Peter Burt, Jim Wyllie, Alex |
| Verschenen in: |
Geocarto international |
| Paginering: | Jaargang 13 (1998) nr. 2 pagina's 27-34 |
| Jaar: |
1998-06 |
| Inhoud: |
The Geoscan Airborne Multi-spectral Scanner was used to provide high-spatial resolution maps (± 10 m) of seven major benthic marine habitat types, for an area approximately 100 x 20 km, of the coastal waters off Perth, Western Australia. Innovative techniques were applied to the image to remove sun-glint, wave-facet and across-track illumination effects. The image was spatially rectified to a SPOT panchromatic image. A combination of spectral data and digital bathymetry were used to auto-classify the major benthic habitats within panels (512 x 512 pixels) of the total image. Analysis of more than 100 ground-truthing sites indicated that this classification technique achieved a degree of accuracy of greater than 70% for the relatively shallow inshore habitats (<5 m depth) and more than 60% for the deeper offshore habitats (> 20 m). The accuracy of the classification ranged between 92 % for coarse sand and 62 % for subtidal reef. The approach used in this study suggests that airborne scanners, such as Geoscan, can provide marine managers with an efficient and cost-effective method for obtaining digital habitat maps over large areas of coastal waters. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 147 van 250 gevonden artikelen
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