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Chromablur: rendering chromatic eye aberration improves accommodation and realism

Published: 20 November 2017 Publication History

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.

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  • (2024)Chromatic cues for the sign of defocus in the peripheral retinaBiomedical Optics Express10.1364/BOE.53726815:9(5098)Online publication date: 8-Aug-2024
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  1. Chromablur: rendering chromatic eye aberration improves accommodation and realism

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          cover image ACM Transactions on Graphics
          ACM Transactions on Graphics  Volume 36, Issue 6
          December 2017
          973 pages
          ISSN:0730-0301
          EISSN:1557-7368
          DOI:10.1145/3130800
          Issue’s Table of Contents
          Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than the author(s) must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected].

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          Publication History

          Published: 20 November 2017
          Published in TOG Volume 36, Issue 6

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          Author Tags

          1. accommodation
          2. chromatic aberration
          3. head-mounted displays
          4. vergence-accommodation conflict

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          • (2024)Impact of focus cue presentation on perceived realism of 3-D scene structure: Implications for scene perception and for display technologyJournal of Vision10.1167/jov.24.2.1324:2(13)Online publication date: 27-Feb-2024
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