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Mapping of coral bottoms from different high resolution satellite images
Uppsala University, Disciplinary Domain of Science and Technology, Mathematics and Computer Science, Centre for Image Analysis. Uppsala University, Disciplinary Domain of Science and Technology, Mathematics and Computer Science, Department of Information Technology, Computerized Image Analysis.
Uppsala University, Disciplinary Domain of Science and Technology, Mathematics and Computer Science, Centre for Image Analysis. Uppsala University, Disciplinary Domain of Science and Technology, Mathematics and Computer Science, Department of Information Technology, Computerized Image Analysis.
2002 (English)In: Proc. 29th International Symposium on Remote Sensing of Environment, 2002, 4- p.Conference paper, Published paper (Refereed)
Abstract [en]

Recent dramatic bleaching events on coral reefs have enhanced the need for global environmental monitoring. This paper investigates the value of present high spatial resolution satellites to detect coral bleaching using a change detection technique. We compared an IRS LISS-III image taken during the 1998 bleaching event in Belize to images taken before the bleaching event. The sensitivity of the sensors was investigated and a simulation was made to estimate the effect of sub-pixel changes. A manual interpretation of coral bleaching, based on differences between the images, was performed and the outcome were compared to field observations. The spectral characteristics of the pixels corresponding to the field observations and the manually interpreted bleachings have been analysed and compared to pixels from unaffected areas.

Place, publisher, year, edition, pages
2002. 4- p.
National Category
Computer Vision and Robotics (Autonomous Systems)
Identifiers
URN: urn:nbn:se:uu:diva-42715OAI: oai:DiVA.org:uu-42715DiVA: diva2:70617
Conference
ISRSE 2002, April 8–12, Buenos Aires, Argentina
Available from: 2005-08-25 Created: 2005-08-25 Last updated: 2016-06-07

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Lindell, Tommy

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