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3D Fine-scale Terrain Variables from Underwater Photogrammetry: A New Approach to Benthic Microhabitat Modeling in a Circalittoral Rocky Shelf

Identificadores del recurso

2072-4292

http://hdl.handle.net/10508/15470

10.3390/rs12152466

Origin

(Repositorio Institucional Digital del e-IEO)

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Title:: 3D Fine-scale Terrain Variables from Underwater Photogrammetry: A New Approach to Benthic Microhabitat Modeling in a Circalittoral Rocky Shelf
Tema:: circalittoral rocky shelf; underwater 3D photogrammetry; structure-from-motion; Avilés Canyon System; benthic habitat modeling; deep-learning; YOLO; Annotation of underwater images
Description:: The relationship between 3D terrain complexity and fine-scale localization and distribution of species is poorly understood. Here we present a very fine-scale 3D reconstruction model of three zones of circalittoral rocky shelf in the Bay of Biscay. Detailed terrain variables are extracted from 3D models using a structure-from-motion (SfM) approach applied to ROTV images. Significant terrain variables that explain species location were selected using general additive models (GAMs) and micro-distribution of the species were predicted. Two models combining BPI, curvature and rugosity can explain 55% and 77% of the Ophiuroidea and Crinoidea distribution, respectively. The third model contributes to explaining the terrain variables that induce the localization of Dendrophyllia cornigera. GAM univariate models detect the terrain variables for each structural species in this third zone (Artemisina transiens, D. cornigera and Phakellia ventilabrum). To avoid the time-consuming task of manual annotation of presence, a deep-learning algorithm (YOLO v4) is proposed. This approach achieves very high reliability and low uncertainty in automatic object detection, identification and location. These new advances applied to underwater imagery (SfM and deep-learning) can resolve the very-high resolution information needed for predictive microhabitat modeling in a very complex zone.; 1
Idioma:: English
Autor/Productor:: Prado, E. (Elena); Rodríguez Basalo, Augusto; Cobo, Adolfo; Ríos, P. (Pilar); Sánchez, F. (Francisco)
Publisher:: MDPI AG; Centro Oceanográfico de Santander
Rights:: Atribución 3.0 España; http://creativecommons.org/licenses/by/3.0/es/; openAccess
Date:: 2021-11-11T20:56:43Z; 2020
Tipo de recurso:: article

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