title: Predicting the brightness of unrelated self-luminous stimuli.
abstract: In a magnitude estimation experiment, twenty observers rated the brightness of several unrelated, self-luminous stimuli surrounded by a dark background. The performance of a number of existing vision models, color appearance models and models based on the concept of equivalent luminance in predicting brightness has been investigated. Due to a severe underestimation of the Helmholtz-Kohlrausch effect, none of the models performed acceptable. Increasing the weight of the colorfulness contribution to the brightness attribute in the CAM97u model results in a very good correlation between the model predictions and the visually perceived brightness. Finally the experimental results and the brightness prediction from the modified model CAM97u,m are verified through a matching experiment and a validation magnitude estimation experiment.
authors: Martijn
authors: M
authors: Withouck
authors: Kevin A G
authors: KA
authors: Smet
authors: Wouter R
authors: WR
authors: Ryckaert
authors: Geert
authors: G
authors: Deconinck
authors: Peter
authors: P
authors: Hanselaer