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Details van artikel 2 van 250 gevonden artikelen
| Titel: |
Accuracy Assessment of Hyperspectral Classification of Coral Reef Features |
| Auteur: |
Holden, H. LeDrew, E. |
| Verschenen in: |
Geocarto international |
| Paginering: | Jaargang 15 (2000) nr. 2 pagina's 7-14 |
| Jaar: |
2000-06 |
| Inhoud: |
Increased observations of large-scale coral bleaching events have raised awareness of the vulnerability of coral reef ecosystems to the synergistic effects of natural and anthropogenic environmental changes. Such increased awareness has lead to subjective reporting of observed changes, but there has been a significant lack of objective monitoring of coral reef ecosystems on a repetitive basis. One limiting factor to remote detection and subsequent evaluation of the condition of coral reefs has been the lack of a quantitative means of identifying optically similar features such as healthy coral and macroalgae. Therefore, a field program was designed to collect reflectance data with a hand held hyperspectral radiometer to test the hypothesis that there is a difference in spectral reflectance characteristics of various coral reef features. A classification procedure is devised based on first derivative, second derivative, and magnitude of reflectance and an error analysis performed to investigate accuracy of identification. The overall accuracy is 80.1%, and an investigation of the errors of omission and commission indicates that the majority of the errors are a result of difficulty characterizing bleached coral correctly. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 2 van 250 gevonden artikelen
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