Data from: Integrating 3D models with morphometric measurements to improve volumetric estimates in marine mammals
1. Studies of body condition are key to understanding the health, bioenergetics, and ecological roles of marine mammals. Due to challenges in studying marine mammals at sea, body condition is often approximated using metrics representing the size of the dorsal surface visible from aerial imagery, bu...
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ftzenodo:oai:zenodo.org:6808432 2023-05-15T16:35:59+02:00 Data from: Integrating 3D models with morphometric measurements to improve volumetric estimates in marine mammals Hirtle, Nathan Stepanuk, Julia Heywood, Eleanor Christiansen, Fredrik Thorne, Lesley 2022-08-11 https://zenodo.org/record/6808432 https://doi.org/10.5061/dryad.kh189328g unknown https://zenodo.org/communities/dryad https://zenodo.org/record/6808432 https://doi.org/10.5061/dryad.kh189328g oai:zenodo.org:6808432 info:eu-repo/semantics/openAccess https://creativecommons.org/publicdomain/zero/1.0/legalcode Blender body condition humpback whale UAV body shape photogrammetry info:eu-repo/semantics/other dataset 2022 ftzenodo https://doi.org/10.5061/dryad.kh189328g 2023-03-10T19:01:14Z 1. Studies of body condition are key to understanding the health, bioenergetics, and ecological roles of marine mammals. Due to challenges in studying marine mammals at sea, body condition is often approximated using metrics representing the size of the dorsal surface visible from aerial imagery, but quantifying variability in body volume would enable a more holistic understanding of bioenergetics. Further, the number and location of measurements needed to accurately quantify body condition has received little attention. Three-dimensional (3D) models provide a promising tool for representing morphology and providing holistic estimates of marine mammal body condition when combined with field-based morphometric measurements. 2. We use humpback whales (Megaptera novaeangliae) to demonstrate the utility of 3D models for estimating body condition in marine mammals. We integrate morphometric measurements taken from Unoccupied Aerial Vehicles (UAVs) with scalable 3D models to generate estimates of humpback whale body volume. We assess which and how many morphometric measurements are required to accurately estimate body volume and compare the error between volume estimates derived from 3D models and previously developed models representing volume as a series of ellipses. Using UAV measurements, we assess the contribution of each morphometric measurement to volumetric estimates, and quantify the error produced by all combinations and numbers of morphometric measurements (131,072 combinations). 3. Error in volume estimates from 3D models generated with as few as five width measurements was <5% compared to the full models and was lower than the error produced when using five width measurements with the elliptical approach. We suggest that by conserving the external morphology of marine mammals, 3D models allow body volume and body condition to be estimated accurately with few measurements. 4. We provide code and guidelines for creating 3D models using the open-source software Blender and for assessing which measurements ... Dataset Humpback Whale Megaptera novaeangliae Zenodo |
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Open Polar |
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Zenodo |
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ftzenodo |
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unknown |
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Blender body condition humpback whale UAV body shape photogrammetry |
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Blender body condition humpback whale UAV body shape photogrammetry Hirtle, Nathan Stepanuk, Julia Heywood, Eleanor Christiansen, Fredrik Thorne, Lesley Data from: Integrating 3D models with morphometric measurements to improve volumetric estimates in marine mammals |
topic_facet |
Blender body condition humpback whale UAV body shape photogrammetry |
description |
1. Studies of body condition are key to understanding the health, bioenergetics, and ecological roles of marine mammals. Due to challenges in studying marine mammals at sea, body condition is often approximated using metrics representing the size of the dorsal surface visible from aerial imagery, but quantifying variability in body volume would enable a more holistic understanding of bioenergetics. Further, the number and location of measurements needed to accurately quantify body condition has received little attention. Three-dimensional (3D) models provide a promising tool for representing morphology and providing holistic estimates of marine mammal body condition when combined with field-based morphometric measurements. 2. We use humpback whales (Megaptera novaeangliae) to demonstrate the utility of 3D models for estimating body condition in marine mammals. We integrate morphometric measurements taken from Unoccupied Aerial Vehicles (UAVs) with scalable 3D models to generate estimates of humpback whale body volume. We assess which and how many morphometric measurements are required to accurately estimate body volume and compare the error between volume estimates derived from 3D models and previously developed models representing volume as a series of ellipses. Using UAV measurements, we assess the contribution of each morphometric measurement to volumetric estimates, and quantify the error produced by all combinations and numbers of morphometric measurements (131,072 combinations). 3. Error in volume estimates from 3D models generated with as few as five width measurements was <5% compared to the full models and was lower than the error produced when using five width measurements with the elliptical approach. We suggest that by conserving the external morphology of marine mammals, 3D models allow body volume and body condition to be estimated accurately with few measurements. 4. We provide code and guidelines for creating 3D models using the open-source software Blender and for assessing which measurements ... |
format |
Dataset |
author |
Hirtle, Nathan Stepanuk, Julia Heywood, Eleanor Christiansen, Fredrik Thorne, Lesley |
author_facet |
Hirtle, Nathan Stepanuk, Julia Heywood, Eleanor Christiansen, Fredrik Thorne, Lesley |
author_sort |
Hirtle, Nathan |
title |
Data from: Integrating 3D models with morphometric measurements to improve volumetric estimates in marine mammals |
title_short |
Data from: Integrating 3D models with morphometric measurements to improve volumetric estimates in marine mammals |
title_full |
Data from: Integrating 3D models with morphometric measurements to improve volumetric estimates in marine mammals |
title_fullStr |
Data from: Integrating 3D models with morphometric measurements to improve volumetric estimates in marine mammals |
title_full_unstemmed |
Data from: Integrating 3D models with morphometric measurements to improve volumetric estimates in marine mammals |
title_sort |
data from: integrating 3d models with morphometric measurements to improve volumetric estimates in marine mammals |
publishDate |
2022 |
url |
https://zenodo.org/record/6808432 https://doi.org/10.5061/dryad.kh189328g |
genre |
Humpback Whale Megaptera novaeangliae |
genre_facet |
Humpback Whale Megaptera novaeangliae |
op_relation |
https://zenodo.org/communities/dryad https://zenodo.org/record/6808432 https://doi.org/10.5061/dryad.kh189328g oai:zenodo.org:6808432 |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/publicdomain/zero/1.0/legalcode |
op_doi |
https://doi.org/10.5061/dryad.kh189328g |
_version_ |
1766026303270551552 |