On the aperture problem of binocular 3D motion perception

Lages, M. and Heron, S. (2019) On the aperture problem of binocular 3D motion perception. Vision, 3(4), 64. (doi: 10.3390/vision3040064) (PMID:31752372)

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Like many predators, humans have forward-facing eyes that are set a short distance apart so that an extensive region of the visual field is seen from two different points of view. The human visual system can establish a three-dimensional (3D) percept from the projection of images into the left and right eye. How the visual system integrates local motion and binocular depth in order to accomplish 3D motion perception is still under investigation. Here, we propose a geometric-statistical model that combines noisy velocity constraints with a spherical motion prior to solve the aperture problem in 3D. In two psychophysical experiments, it is shown that instantiations of this model can explain how human observers disambiguate 3D line motion direction behind a circular aperture. We discuss the implications of our results for the processing of motion and dynamic depth in the visual system.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Lages, Dr Martin
Creator Roles:
Lages, M.Conceptualization, Methodology, Software, Validation, Formal analysis, Investigation, Resources, Data curation, Writing – original draft, Writing – review and editing, Visualization, Supervision, Project administration, Funding acquisition
Authors: Lages, M., and Heron, S.
College/School:College of Science and Engineering > School of Psychology
Journal Name:Vision
ISSN (Online):2411-5150
Copyright Holders:Copyright © 2019 The Authors
First Published:First published in Vision 3(4):64
Publisher Policy:Reproduced under a Creative Commons License

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
164536Perceived 3D trajectory of line motionMartin LagesLeverhulme Trust (LEVERHUL)F/00179/BGPsychology
172258Tquan TMartin LagesEuropean Commission (EC)Lages, Dr MartinPsychology
1900502008-12 Doctoral Training GrantMary Beth KneafseyEngineering and Physical Sciences Research Council (EPSRC)EP/P50418X/1Research and Innovation Services