Subjective quality of video sequences rendered on LCD with local backlight dimming at different lighting conditions

Claire Mantel*, Jari Korhonen, Jesper M. Pedersen, Søren Bech, Jakob Dahl Andersen, Søren Forchhammer

*Kontaktforfatter

Publikation: Bidrag til bog/antologi/rapport/konference proceedingKonferenceartikel i proceedingForskningpeer review

5 Citationer (Scopus)

Abstract

This paper focuses on the influence of ambient light on the perceived quality of videos displayed on Liquid Crystal Display (LCD) with local backlight dimming. A subjective test assessing the quality of videos with two backlight dimming methods and three lighting conditions, i.e. no light, low light level (5 lux) and higher light level (60 lux) was organized to collect subjective data. Results show that participants prefer the method exploiting local dimming possibilities to the conventional full backlight but that this preference varies depending on the ambient light level. The clear preference for one method at the low light conditions decreases at the high ambient light, confirming that the ambient light significantly attenuates the perception of the leakage defect (light leaking through dark pixels). Results are also highly dependent on the content of the sequence, which can modulate the effect of the ambient light from having an important influence on the quality grades to no influence at all.

OriginalsprogEngelsk
TitelProceedings of SPIE-IS and T Electronic Imaging - Image Quality and System Performance XII
Antal sider8
Vol/bind9396
ForlagSPIE - International Society for Optical Engineering
Publikationsdato8 jan. 2015
Sider1-8
Artikelnummer93960S
ISBN (Trykt)9781628414868
DOI
StatusUdgivet - 8 jan. 2015
BegivenhedImage Quality and System Performance XII - San Francisco, USA
Varighed: 10 feb. 201512 feb. 2015

Konference

KonferenceImage Quality and System Performance XII
Land/OmrådeUSA
BySan Francisco
Periode10/02/201512/02/2015
SponsorThe Society for Imaging Science and Technology (IS and T), The Society of Photo-Optical Instrumentation Engineers (SPIE)
NavnProceedings of SPIE, the International Society for Optical Engineering
Vol/bind9396
ISSN0277-786X

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