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A Note on the Depth-from-Defocus Mechanism of Jumping Spiders

Jumping spiders are capable of estimating the distance to their prey relying only on the information from one of their main eyes. Recently, it has been shown that jumping spiders perform this estimation based on image defocus cues. In order to gain insight into the mechanisms involved in this blur-t...

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Detalles Bibliográficos
Autores principales: Nolte, Aleke, Hennes, Daniel, Izzo, Dario, Blum, Christian, Hafner, Verena V., Gheysens, Tom
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6477618/
https://www.ncbi.nlm.nih.gov/pubmed/31105166
http://dx.doi.org/10.3390/biomimetics2010003
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author Nolte, Aleke
Hennes, Daniel
Izzo, Dario
Blum, Christian
Hafner, Verena V.
Gheysens, Tom
author_facet Nolte, Aleke
Hennes, Daniel
Izzo, Dario
Blum, Christian
Hafner, Verena V.
Gheysens, Tom
author_sort Nolte, Aleke
collection PubMed
description Jumping spiders are capable of estimating the distance to their prey relying only on the information from one of their main eyes. Recently, it has been shown that jumping spiders perform this estimation based on image defocus cues. In order to gain insight into the mechanisms involved in this blur-to-distance mapping as performed by the spider and to judge whether inspirations can be drawn from spider vision for depth-from-defocus computer vision algorithms, we constructed a three-dimensional (3D) model of the anterior median eye of the Metaphidippus aeneolus, a well studied species of jumping spider. We were able to study images of the environment as the spider would see them and to measure the performances of a well known depth-from-defocus algorithm on this dataset. We found that the algorithm performs best when using images that are averaged over the considerable thickness of the spider’s receptor layers, thus pointing towards a possible functional role of the receptor thickness for the spider’s depth estimation capabilities.
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spelling pubmed-64776182019-05-16 A Note on the Depth-from-Defocus Mechanism of Jumping Spiders Nolte, Aleke Hennes, Daniel Izzo, Dario Blum, Christian Hafner, Verena V. Gheysens, Tom Biomimetics (Basel) Article Jumping spiders are capable of estimating the distance to their prey relying only on the information from one of their main eyes. Recently, it has been shown that jumping spiders perform this estimation based on image defocus cues. In order to gain insight into the mechanisms involved in this blur-to-distance mapping as performed by the spider and to judge whether inspirations can be drawn from spider vision for depth-from-defocus computer vision algorithms, we constructed a three-dimensional (3D) model of the anterior median eye of the Metaphidippus aeneolus, a well studied species of jumping spider. We were able to study images of the environment as the spider would see them and to measure the performances of a well known depth-from-defocus algorithm on this dataset. We found that the algorithm performs best when using images that are averaged over the considerable thickness of the spider’s receptor layers, thus pointing towards a possible functional role of the receptor thickness for the spider’s depth estimation capabilities. MDPI 2017-03-14 /pmc/articles/PMC6477618/ /pubmed/31105166 http://dx.doi.org/10.3390/biomimetics2010003 Text en © 2017 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Nolte, Aleke
Hennes, Daniel
Izzo, Dario
Blum, Christian
Hafner, Verena V.
Gheysens, Tom
A Note on the Depth-from-Defocus Mechanism of Jumping Spiders
title A Note on the Depth-from-Defocus Mechanism of Jumping Spiders
title_full A Note on the Depth-from-Defocus Mechanism of Jumping Spiders
title_fullStr A Note on the Depth-from-Defocus Mechanism of Jumping Spiders
title_full_unstemmed A Note on the Depth-from-Defocus Mechanism of Jumping Spiders
title_short A Note on the Depth-from-Defocus Mechanism of Jumping Spiders
title_sort note on the depth-from-defocus mechanism of jumping spiders
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6477618/
https://www.ncbi.nlm.nih.gov/pubmed/31105166
http://dx.doi.org/10.3390/biomimetics2010003
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