Title :
A monitoring method of coral bleaching and recovery by using hyperspectral sensor
Author :
Kakuta, Satomi ; Ariyasu, Emiko ; Asada, Norihiro ; Takeda, Takahiro ; Matsunaga, Tsuneo ; Yamano, Hiroya
Author_Institution :
Asia Air Survey Co., Ltd., Japan
Abstract :
Coral bleaching can lead to death of corals and has been increasing in worldwide in recent years. We proposed a method to classify extents of alive and dead corals by using space-bone hyperspectral sensor to monitor the events. The method was composed of two different approaches- Bottom Index and first derivative analysis of reflectance. In this study, examinations for improvement of classification accuracy and understanding a limitation of water depth which the classification can be applied for. After the result, feasibility of the method was evaluated with simulation data of HISUI, space-bone hyperspectral sensor. As a result, it was shown that the developed method was capable to be applied to HISUI data.
Keywords :
hyperspectral imaging; oceanographic techniques; oceanography; HISUI data application; HISUI simulation data; alive coral classification extent method; bottom index; classification accuracy improvement examinations; coral bleaching monitoring method; coral death; coral recovery monitoring method; dead coral classification extent method; event monitoring; first derivative reflectance analysis; hyperspectral sensor; method feasibility; space-bone hyperspectral sensor; water depth limitation; Accuracy; Attenuation; Hyperspectral sensors; Indexes; Reflectivity; Spatial resolution; Bottom Index; CASI; HISUI; classification; first derivative;
Conference_Titel :
Geoscience and Remote Sensing Symposium (IGARSS), 2013 IEEE International
Conference_Location :
Melbourne, VIC
Print_ISBN :
978-1-4799-1114-1
DOI :
10.1109/IGARSS.2013.6723096
