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Open AccessArticle

On the Aperture Problem of Binocular 3D Motion Perception

by Martin Lages 1,2,* and Suzanne Heron 1
1
School of Psychology, University of Glasgow, Glasgow G12 8QB, UK
2
Psychological Institute, University of Tübingen, D-72076 Tübingen, Germany
*
Author to whom correspondence should be addressed.
Vision 2019, 3(4), 64; https://doi.org/10.3390/vision3040064
Received: 23 August 2019 / Revised: 8 November 2019 / Accepted: 15 November 2019 / Published: 19 November 2019
(This article belongs to the Special Issue Selected Papers from the Scottish Vision Group Meeting 2019)
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. View Full-Text
Keywords: velocity; disparity; local motion; Bayesian inference velocity; disparity; local motion; Bayesian inference
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MDPI and ACS Style

Lages, M.; Heron, S. On the Aperture Problem of Binocular 3D Motion Perception. Vision 2019, 3, 64.

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  • Externally hosted supplementary file 1
    Link: http://osf.io/2j6sq
    Description: OSF Project: Binocular 3D Motion Perception
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