TY - GEN
T1 - Subjective quality of video sequences rendered on LCD with local backlight dimming at different lighting conditions
AU - Mantel, Claire
AU - Korhonen, Jari
AU - Pedersen, Jesper Mørkhøj
AU - Bech, Søren
AU - Andersen, Jakob Dahl
AU - Forchhammer, Søren
N1 - Copyright 2015 Society of Photo Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic electronic or print reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
PY - 2015
Y1 - 2015
N2 - 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.
AB - 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.
U2 - 10.1117/12.2083018
DO - 10.1117/12.2083018
M3 - Article in proceedings
VL - 9396
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Proceedings of the SPIE
PB - SPIE - International Society for Optical Engineering
T2 - Image Quality and System Performance XII
Y2 - 8 February 2015 through 12 February 2015
ER -