ChromaBlur : rendering chromatic eye aberration improves accommodation and realism
| Autor: | Gordon D. Love, Ren Ng, Steven A. Cholewiak, Martin S. Banks, Pratul P. Srinivasan |
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| Rok vydání: | 2017 |
| Předmět: |
Computer science
Aperture media_common.quotation_subject ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION 02 engineering and technology 050105 experimental psychology law.invention Rendering (computer graphics) chemistry.chemical_compound law Perception Computer graphics (images) Chromatic aberration 0202 electrical engineering electronic engineering information engineering medicine Focal length 0501 psychology and cognitive sciences Computer vision Chromatic scale media_common ComputingMethodologies_COMPUTERGRAPHICS business.industry 05 social sciences 020207 software engineering Retinal Computer Graphics and Computer-Aided Design Gaze Lens (optics) medicine.anatomical_structure chemistry Human eye Artificial intelligence business Accommodation |
| Zdroj: | ACM transactions on graphics, 2017, Vol.36(6), pp.210 [Peer Reviewed Journal] |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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