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Title: Spatial Brightness Perception of Trichromatic Stimuli

Abstract

An experiment was conducted to examine the effect of tuning optical radiation on brightness perception for younger (18-25 years of age) and older (50 years of age or older) observers. Participants made forced-choice evaluations of the brightness of a full factorial of stimulus pairs selected from two groups of four metameric stimuli. The large-field stimuli were created by systematically varying either the red or the blue primary of an RGB LED mixture. The results indicate that light stimuli of equal illuminance and chromaticity do not appear equally bright to either younger or older subjects. The rank-order of brightness is not predicted by any current model of human vision or theory of brightness perception including Scotopic to Photopic or Cirtopic to Photopic ratio theory, prime color theory, correlated color temperature, V(λ)-based photometry, color quality metrics, linear brightness models, or color appearance models. Age may affect brightness perception when short-wavelength primaries are used, especially those with a peak wavelength shorter than 450 nm. The results suggest further development of metrics to predict brightness perception is warranted, and that including age as a variable in predictive models may be valuable.

Authors:
;
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1130733
Report Number(s):
PNNL-SA-91455
BT0400000
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Journal Name:
LEUKOS - The Journal of the Illuminating Engineering Society of North America, 9(2):89-108
Additional Journal Information:
Journal Name: LEUKOS - The Journal of the Illuminating Engineering Society of North America, 9(2):89-108
Country of Publication:
United States
Language:
English
Subject:
Brightness perception; trichromacy; s/p ratio; spectral tuning

Citation Formats

Royer, Michael P., and Houser, Kevin W. Spatial Brightness Perception of Trichromatic Stimuli. United States: N. p., 2012. Web.
Royer, Michael P., & Houser, Kevin W. Spatial Brightness Perception of Trichromatic Stimuli. United States.
Royer, Michael P., and Houser, Kevin W. Fri . "Spatial Brightness Perception of Trichromatic Stimuli". United States.
@article{osti_1130733,
title = {Spatial Brightness Perception of Trichromatic Stimuli},
author = {Royer, Michael P. and Houser, Kevin W.},
abstractNote = {An experiment was conducted to examine the effect of tuning optical radiation on brightness perception for younger (18-25 years of age) and older (50 years of age or older) observers. Participants made forced-choice evaluations of the brightness of a full factorial of stimulus pairs selected from two groups of four metameric stimuli. The large-field stimuli were created by systematically varying either the red or the blue primary of an RGB LED mixture. The results indicate that light stimuli of equal illuminance and chromaticity do not appear equally bright to either younger or older subjects. The rank-order of brightness is not predicted by any current model of human vision or theory of brightness perception including Scotopic to Photopic or Cirtopic to Photopic ratio theory, prime color theory, correlated color temperature, V(λ)-based photometry, color quality metrics, linear brightness models, or color appearance models. Age may affect brightness perception when short-wavelength primaries are used, especially those with a peak wavelength shorter than 450 nm. The results suggest further development of metrics to predict brightness perception is warranted, and that including age as a variable in predictive models may be valuable.},
doi = {},
journal = {LEUKOS - The Journal of the Illuminating Engineering Society of North America, 9(2):89-108},
number = ,
volume = ,
place = {United States},
year = {2012},
month = {11}
}