High Brightness HDR Projection Using Dynamic Freeform Lensing

Handle URI:
http://hdl.handle.net/10754/621396
Title:
High Brightness HDR Projection Using Dynamic Freeform Lensing
Authors:
Damberg, Gerwin; Gregson, James; Heidrich, Wolfgang ( 0000-0002-4227-8508 )
Abstract:
Cinema projectors need to compete with home theater displays in terms of image quality. High frame rate and spatial resolution as well as stereoscopic 3D are common features today, but even the most advanced cinema projectors lack in-scene contrast and, more important, high peak luminance, both of which are essential perceptual attributes of images appearing realistic. At the same time, HDR image statistics suggest that the average image intensity in a controlled ambient viewing environment such as the cinema can be as low as 1% for cinematic HDR content and not often higher than 18%, middle gray in photography. Traditional projection systems form images and colors by blocking the source light from a lamp, therefore attenuating between 99% and 82% of light, on average. This inefficient use of light poses significant challenges for achieving higher peak brightness levels. In this work, we propose a new projector architecture built around commercially available components, in which light can be steered to form images. The gain in system efficiency significantly reduces the total cost of ownership of a projector (fewer components and lower operating cost), and at the same time increases peak luminance and improves black level beyond what is practically achievable with incumbent projector technologies. At the heart of this computational display technology is a new projector hardware design using phase modulation in combination with a new optimization algorithm that is capable of on-the-fly computation of freeform lens surfaces. © 2016 ACM.
KAUST Department:
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division; Computer Science Program; Visual Computing Center (VCC)
Citation:
Damberg G, Gregson J, Heidrich W (2016) High Brightness HDR Projection Using Dynamic Freeform Lensing. ACM Transactions on Graphics 35: 1–11. Available: http://dx.doi.org/10.1145/2857051.
Publisher:
Association for Computing Machinery (ACM)
Issue Date:
3-May-2016
DOI:
10.1145/2857051
Type:
Article
ISSN:
0730-0301
Appears in Collections:
Articles; Computer Science Program; Visual Computing Center (VCC); Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorDamberg, Gerwinen
dc.contributor.authorGregson, Jamesen
dc.contributor.authorHeidrich, Wolfgangen
dc.date.accessioned2016-11-03T08:28:20Z-
dc.date.available2016-11-03T08:28:20Z-
dc.date.issued2016-05-03en
dc.identifier.citationDamberg G, Gregson J, Heidrich W (2016) High Brightness HDR Projection Using Dynamic Freeform Lensing. ACM Transactions on Graphics 35: 1–11. Available: http://dx.doi.org/10.1145/2857051.en
dc.identifier.issn0730-0301en
dc.identifier.doi10.1145/2857051en
dc.identifier.urihttp://hdl.handle.net/10754/621396-
dc.description.abstractCinema projectors need to compete with home theater displays in terms of image quality. High frame rate and spatial resolution as well as stereoscopic 3D are common features today, but even the most advanced cinema projectors lack in-scene contrast and, more important, high peak luminance, both of which are essential perceptual attributes of images appearing realistic. At the same time, HDR image statistics suggest that the average image intensity in a controlled ambient viewing environment such as the cinema can be as low as 1% for cinematic HDR content and not often higher than 18%, middle gray in photography. Traditional projection systems form images and colors by blocking the source light from a lamp, therefore attenuating between 99% and 82% of light, on average. This inefficient use of light poses significant challenges for achieving higher peak brightness levels. In this work, we propose a new projector architecture built around commercially available components, in which light can be steered to form images. The gain in system efficiency significantly reduces the total cost of ownership of a projector (fewer components and lower operating cost), and at the same time increases peak luminance and improves black level beyond what is practically achievable with incumbent projector technologies. At the heart of this computational display technology is a new projector hardware design using phase modulation in combination with a new optimization algorithm that is capable of on-the-fly computation of freeform lens surfaces. © 2016 ACM.en
dc.publisherAssociation for Computing Machinery (ACM)en
dc.subjectHigh brightnessen
dc.subjectHigh peak luminanceen
dc.subjectImage statisticsen
dc.subjectLaser projectoren
dc.subjectVisual perceptionen
dc.titleHigh Brightness HDR Projection Using Dynamic Freeform Lensingen
dc.typeArticleen
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Divisionen
dc.contributor.departmentComputer Science Programen
dc.contributor.departmentVisual Computing Center (VCC)en
dc.contributor.institutionUniversity of British Columbia, Vancouver, Canadaen
kaust.authorHeidrich, Wolfgangen
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