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ChromaBlur : rendering chromatic eye aberration improves accommodation and realism.

Cholewiak, Steven A. and Love, Gordon D. and Srinivasan, Pratul P. and Ng, Ren and Banks, Martin S. (2017) 'ChromaBlur : rendering chromatic eye aberration improves accommodation and realism.', ACM transactions on graphics., 36 (6). p. 210.

Abstract

Computer-graphics engineers and vision scientists want to generate images that reproduce realistic depth-dependent blur. Current rendering algorithms take into account scene geometry, aperture size, and focal distance, and they produce photorealistic imagery as with a high-quality camera. But to create immersive experiences, rendering algorithms should aim instead for perceptual realism. In so doing, they should take into account the significant optical aberrations of the human eye. We developed a method that, by incorporating some of those aberrations, yields displayed images that produce retinal images much closer to the ones that occur in natural viewing. In particular, we create displayed images taking the eye's chromatic aberration into account. This produces different chromatic effects in the retinal image for objects farther or nearer than current focus. We call the method ChromaBlur. We conducted two experiments that illustrate the benefits of ChromaBlur. One showed that accommodation (eye focusing) is driven quite effectively when ChromaBlur is used and that accommodation is not driven at all when conventional methods are used. The second showed that perceived depth and realism are greater with imagery created by ChromaBlur than in imagery created conventionally. ChromaBlur can be coupled with focus-adjustable lenses and gaze tracking to reproduce the natural relationship between accommodation and blur in HMDs and other immersive devices. It may thereby minimize the adverse effects of vergence-accommodation conflicts.

Item Type:Article
Full text:(AM) Accepted Manuscript
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Status:Peer-reviewed
Publisher Web site:https://doi.org/10.1145/3130800.3130815
Publisher statement:© ACM, 2017. This is the author's version of the work. It is posted here by permission of ACM for your personal use. Not for redistribution. The definitive version was published in ACM transactions on graphics, 36, 6 (210) http://doi.acm.org/10.1145/3130800.3130815
Date accepted:17 September 2017
Date deposited:15 September 2017
Date of first online publication:20 November 2017
Date first made open access:20 November 2017

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