Improving visual quality of view transitions in automultiscopic displays

Du, Song-Pei, Didyk, Piotr, Durand, Frédo, Hu, Shi-Min ORCID: https://orcid.org/0000-0001-7507-6542 and Matusik, Wojciech 2014. Improving visual quality of view transitions in automultiscopic displays. ACM Transactions on Graphics 33 (6) , 192. 10.1145/2661229.2661248

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Abstract

Automultiscopic screens present different images depending on the viewing direction. This enables glasses-free 3D and provides motion parallax effect. However, due to the limited angular resolution of such displays, they suffer from hot-spotting, i. e., image quality is highly affected by the viewing position. In this paper, we analyze light fields produced by lenticular and parallax-barrier displays, and show that, unlike in real world, the light fields produced by such screens have a repetitive structure. This induces visual artifacts in the form of view discontinuities, depth reversals, and excessive disparities when viewing position is not optimal. Although the problem has been always considered as inherent to the technology, we demonstrate that light fields reproduced on automultiscopic displays have enough degrees of freedom to improve the visual quality. We propose a new technique that modifies light fields using global and local shears followed by stitching to improve their continuity when displayed on a screen. We show that this enhances visual quality significantly, which is demonstrated in a series of user experiments with an automultiscopic display as well as lenticular prints.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Computer Science & Informatics
Subjects:	Q Science > QA Mathematics > QA75 Electronic computers. Computer science
Publisher:	Association for Computing Machinery
ISSN:	0730-0301
Date of First Compliant Deposit:	6 September 2016
Date of Acceptance:	9 August 2014
Last Modified:	06 Nov 2023 18:20
URI:	https://orca.cardiff.ac.uk/id/eprint/94259

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