PhotoQuads of Benthic Coral Reef Environments
DataSet Contact: Matthew Dunlap
Description: Benthic images of coral reefs are taken using a Canon Powershot 1200 SD. Each image is taken from an altitude of 1 meter above the seafloor, using a monopod. Photos are taken in natural lighting, without the use of a strobe. Images are collected every 0.5 meter along two separate transect lines at each site, for a total of 30 images per site.
Each image is divided into ten sectors and a single random X,Y coordinate is generated for each sector. The benthic component at each coordinate is classified using a code file.
purpose: The purpose of the photoquads is to provide estimates of percent cover for each benthic component.
Example imagery
Individual data sets are password protected to prevent unauthorized download. Please email the chair to request access permissions.
Cameras: Canon Powershot 1200 SD
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•Digital
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•Non-stereo
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•Color
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•Lighting: Ambient
Data Acquisition: 15,000 images per year
Data Archive: 53,000 images
Platform Details
how to cite: Dunlap, M.J. (2013). Coral Reef Photoquads from the Main Hawaiian Islands. NOAA Pacific Islands Fisheries Science Center, Coral Reef Ecosystem Division, Honolulu, HI
Disclaimer: This web site is provided to disseminate information related to the NOAA Fisheries Strategic Initiative on Automated Image Analysis. This is not an official NOAA website and the views expressed do not necessarily reflect any official position of NOAA, the Department of Commerce, or the government of the United States.
