Stone, T., Mangan, M. orcid.org/0000-0002-0293-8874, Wystrach, A. et al. (1 more author) (2018) Rotation invariant visual processing for spatial memory in insects. Interface Focus, 8 (4). 20180010. ISSN 2042-8898
Abstract
Visual memory is crucial to navigation in many animals, including insects. Here, we focus on the problem of visual homing, that is, using comparison of the view at a current location with a view stored at the home location to control movement towards home by a novel shortcut. Insects show several visual specializations that appear advantageous for this task, including almost panoramic field of view and ultraviolet light sensitivity, which enhances the salience of the skyline. We discuss several proposals for subsequent processing of the image to obtain the required motion information, focusing on how each might deal with the problem of yaw rotation of the current view relative to the home view. Possible solutions include tagging of views with information from the celestial compass system, using multiple views pointing towards home, or rotation invariant encoding of the view. We illustrate briefly how a well-known shape description method from computer vision, Zernike moments, could provide a compact and rotation invariant representation of sky shapes to enhance visual homing. We discuss the biological plausibility of this solution, and also a fourth strategy, based on observed behaviour of insects, that involves transfer of information from visual memory matching to the compass system.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2018 The Author(s). This is an author produced version of a paper subsequently published in Interface Focus. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | visual homing; insect navigation; skyline; frequency encoding; rotational invariance; Zernike moments |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Computer Science (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 25 Jul 2018 12:12 |
Last Modified: | 27 Jan 2020 14:11 |
Published Version: | https://doi.org/10.1098/rsfs.2018.0010 |
Status: | Published |
Publisher: | Royal Society, The |
Refereed: | Yes |
Identification Number: | 10.1098/rsfs.2018.0010 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:133447 |