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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 13 — Jun. 30, 2014
  • pp: 16298–16309

Predicting the brightness of unrelated self-luminous stimuli

Martijn Withouck, Kevin A.G. Smet, Wouter R. Ryckaert, Geert Deconinck, and Peter Hanselaer  »View Author Affiliations

Optics Express, Vol. 22, Issue 13, pp. 16298-16309 (2014)

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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.

© 2014 Optical Society of America

OCIS Codes
(330.1690) Vision, color, and visual optics : Color
(330.5020) Vision, color, and visual optics : Perception psychology
(330.5510) Vision, color, and visual optics : Psychophysics

ToC Category:
Vision, Color, and Visual Optics

Original Manuscript: February 18, 2014
Manuscript Accepted: May 5, 2014
Published: June 24, 2014

Virtual Issues
Vol. 9, Iss. 8 Virtual Journal for Biomedical Optics

Martijn Withouck, Kevin A.G. Smet, Wouter R. Ryckaert, Geert Deconinck, and Peter Hanselaer, "Predicting the brightness of unrelated self-luminous stimuli," Opt. Express 22, 16298-16309 (2014)

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