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Description:
Title:
Processing Photomosaic Imagery of Coral Reefs Using Structure-from-Motion Standard Operating Procedures
Author(s):
Suka, Rhonda
Asbury, Mollie
Gray, Andrew Elisha
Winston, Morgan
Oliver, Thomas (Thomas Andrew)
Couch, Courtney S.
United States. National Marine Fisheries Service,
Pacific Islands Fisheries Science Center (U.S.)
United States, National Oceanic and Atmospheric Administration,
Coral Reef Conservation Program (U.S.)
Corporate Name:
United States. National Marine Fisheries Service,
Pacific Islands Fisheries Science Center (U.S.)
United States, National Oceanic and Atmospheric Administration,
Coral Reef Conservation Program (U.S.)
Dates of Publication:
2019
Abstract:
This document provides detailed procedures for collecting and processing imagery using Structure-from-Motion techniques developed by Ecosystem Sciences Division (ESD) in collaboration with Scripps Institution of Oceanography and the University of Hawaii at Hilo. These procedures are designed to efficiently generate coral demographic and benthic community metrics across the broad spatial scale of the Pacific Rapid Assessment and Monitoring Program. This pipeline consists of four key steps: (1) Image collection by SCUBA divers, (2) Data management, post-processing, and QC, (3) Generating 3-D models and 2-D orthophotos in Agisoft Metashape, and (4) Extracting demographic data in ArcMap. This SOP is the result of comprehensive testing of different camera systems, collection techniques, and software. While the following procedures are designed to meet ESD needs, we primarily use commercially available cameras and software, making these methods adaptable based on programmatic capacity and needs.
Keywords:
Coral reef animals
Images, Photographic
Monitoring
Three-dimensional imaging
Place Keywords:
North Pacific Ocean
United States
Local Corporate Name:
NMFS (National Marine Fisheries Service)
PIFSC (Pacific Islands Fisheries Science Center)
CoRIS (Coral Reef Information System)
JIMAR (Joint Institute for Marine and Atmospheric Research)
Type of Resource:
Technical Memorandum
Genre:
NOAA technical memorandum NMFS PIFSC ; 93
Note:
This document provides detailed procedures for collecting and processing imagery using Structure-from-Motion techniques developed by Ecosystem Sciences Division (ESD) in collaboration with Scripps Institution of Oceanography and the University of Hawaii at Hilo. These procedures are designed to efficiently generate coral demographic and benthic community metrics across the broad spatial scale of the Pacific Rapid Assessment and Monitoring Program. This pipeline consists of four key steps: (1) Image collection by SCUBA divers, (2) Data management, post-processing, and QC, (3) Generating 3-D models and 2-D orthophotos in Agisoft Metashape, and (4) Extracting demographic data in ArcMap. This SOP is the result of comprehensive testing of different camera systems, collection techniques, and software. While the following procedures are designed to meet ESD needs, we primarily use commercially available cameras and software, making these methods adaptable based on programmatic capacity and needs.
URL:
DOI:
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