BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Talks.cam//talks.cam.ac.uk//
X-WR-CALNAME:Talks.cam
BEGIN:VEVENT
SUMMARY:[SIGGRAPH Asia 2025] Supra-threshold Contrast Perception in Augmen
 ted Reality (Dongyeon) - Dongyeon Kim\, University of Cambridge
DTSTART:20251210T150000Z
DTEND:20251210T153000Z
UID:TALK241864@talks.cam.ac.uk
CONTACT:Yancheng Cai
DESCRIPTION:When an image is seen on an optical see-through augmented real
 ity (AR) display\, the light from the display is mixed with the background
  light from the environment. This can severely limit the available contras
 t in AR\, which is often orders of magnitude below that of traditional dis
 plays. Yet\, the presented images appear sharper and show more details tha
 n the reduction in physical contrast would indicate. In this work\, we hyp
 othesize two effects that are likely responsible for the enhanced perceive
 d contrast in AR: background discounting\, which allows observers focused 
 on the display plane to partially discount the light from the environment\
 ; and supra-threshold contrast perception\, which explains the differences
  in contrast perception across luminance levels. In a series of controlled
  experiments on an AR high-dynamic-range multi-focal haploscope testbed\, 
 we found no statistical evidence supporting the effect of background disco
 unting on contrast perception. Instead\, the increase of visibility in AR 
 is better explained with models of supra-threshold contrast perception. Ou
 r findings can be generalized to incorporate an image input\, and this mod
 el serves to design better algorithms and hardware for display systems aff
 ected by additive light\, such as AR.
LOCATION:GS15\, William Gates Building. Zoom: https://cam-ac-uk.zoom.us/j/
 83825823889?pwd=g1Xm2GJrkpadvhgVJY25uHGlbJFl21.1&amp\;jst=2
END:VEVENT
END:VCALENDAR