Accuracy Assessment of Hyperspectral Classification of Coral Reef Features

Autor:	H. Holden, E. LeDrew
Rok vydání:	2000
Předmět:	Remote detection geography geography.geographical_feature_category Radiometer Coral bleaching Coral Classification procedure Geography Planning and Development Hyperspectral imaging Coral reef Oceanography Environmental science Ecosystem Water Science and Technology Remote sensing
Zdroj:	Geocarto International. 15:7-14
ISSN:	1752-0762 1010-6049
DOI:	10.1080/10106049908542147
Popis:	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 ac...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e6e197753abc1cc62274d1c61af0bc95 https://doi.org/10.1080/10106049908542147 Zobrazit plný text záznamu