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Stereoscopic 3-D content appears relatively veridical when viewed from an oblique angle

Lookup NU author(s): Paul Hands, Dr Tom Smulders, Professor Jenny Read

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Abstract

Geometrically, stereoscopic 3-D (S3D) content should appear distorted unless viewed from the position for which the content was produced. Almost all commercial and laboratory S3D content is generated assuming that it will be presented on a screen frontoparallel to the viewer. However, in cinema and the home, S3D content is regularly viewed from oblique angles, and yet shapes are not usually perceived to be distorted. It is not yet known whether this is simply because viewers are insensitive to incorrect viewing angles or because viewers automatically compensate for oblique viewing, as they do for 2-D content. Here, we investigate this using a canonical-form paradigm. We show that S3D content can indeed appear warped when viewed from oblique angles, and that this effect is more pronounced than for 2-D content. We hypothesized that motion cues in the content would aid in the correct perception of S3D content, making it appear more natural even when viewed obliquely, but we find little support for this idea. However, the perceptual distortions are still small, and viewers do compensate to some extent for oblique viewing. We conclude that, at least as regards object distortion, oblique viewing is unlikely to be substantially more of a problem for S3D content than it already is for 2-D.


Publication metadata

Author(s): Hands P, Smulders TV, Read JCA

Publication type: Article

Publication status: Published

Journal: Journal of Vision

Year: 2015

Volume: 15

Issue: 5

Online publication date: 17/04/2015

Acceptance date: 14/05/2014

ISSN (electronic): 1534-7362

Publisher: Association for Research in Vision and Ophthalmology

URL: http://dx.doi.org/10.1167/15.5.6

DOI: 10.1167/15.5.6


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