BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY:The effect of viewing distance and display peak luminance - HDR AV
 1 video streaming quality dataset - Dounia Hammou\, Univ. of Cambridge
DTSTART:20240613T130000Z
DTEND:20240613T140000Z
UID:TALK217540@talks.cam.ac.uk
CONTACT:Rafal Mantiuk
DESCRIPTION:While it is well recognized that the visibility of distortions
  is affected by the viewing distance and display peak luminance\, very few
  datasets control those conditions\, and also few video quality metrics ca
 n account for them. To address this gap\, we collected a new video quality
  dataset\, HDR-VDC\, which captures the quality degradation of HDR content
  due to AV1 coding artifacts and the resolution reduction. The quality dro
 p was measured at two viewing distances\, corresponding to 60 and 120 pixe
 ls per visual degree\, and two display mean luminance levels\, 51 and 5.6 
 nits. In contrast to the existing datasets that use direct rating protocol
 \, we employ a highly sensitive pairwise comparison protocol with active s
 ampling and comparisons across viewing distances to ensure possibly accura
 te quality measurements. We also provide the first publicly available data
 set that measures the effect of display peak luminance and includes HDR vi
 deos encoded with AV1. Our results indicate that the effect of both viewin
 g distance and display luminance is significant\, and it reduces the visib
 ility of coding and upsampling artifacts on dimmer displays or those seen 
 from a further distance.\n\n[This is a practice talk for the presentation 
 at QoMEX 2024]\n\nZoom: https://cam-ac-uk.zoom.us/j/84760546535?pwd=zYPGgm
 i3fkBmNwaj3DVQfLAzf8nmbl.1
LOCATION:SS03 - William Gates Building
END:VEVENT
END:VCALENDAR