Based on the experimental visual data obtained for self-luminous stimuli surrounded by a dark background, a
new colour appearance model (CAM) for unrelated self-luminous stimuli, CAM15u, was developed. The
model can be a valuable tool to improve existing standards for traffic signs, LED billboards, etc. Furthermore,
first experimental results about the assessment of the colour appearance of similar stimuli but surrounded by a
luminous background are presented. This is considered as a first step to a general CAM for self-luminous
stimuli.status: publishe