OSA's Digital Library

Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 25 — Dec. 6, 2010
  • pp: 26229–26244

Memory colours and colour quality evaluation of conventional and solid-state lamps

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


Optics Express, Vol. 18, Issue 25, pp. 26229-26244 (2010)
http://dx.doi.org/10.1364/OE.18.026229


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Abstract

A colour quality metric based on memory colours is presented. The basic idea is simple. The colour quality of a test source is evaluated as the degree of similarity between the colour appearance of a set of familiar objects and their memory colours. The closer the match, the better the colour quality. This similarity was quantified using a set of similarity distributions obtained by Smet et al. in a previous study. The metric was validated by calculating the Pearson and Spearman correlation coefficients between the metric predictions and the visual appreciation results obtained in a validation experiment conducted by the authors as well those obtained in two independent studies. The metric was found to correlate well with the visual appreciation of the lighting quality of the sources used in the three experiments. Its performance was also compared with that of the CIE colour rendering index and the NIST colour quality scale. For all three experiments, the metric was found to be significantly better at predicting the correct visual rank order of the light sources (p < 0.1).

© 2010 OSA

OCIS Codes
(330.5020) Vision, color, and visual optics : Perception psychology
(330.5510) Vision, color, and visual optics : Psychophysics
(330.1715) Vision, color, and visual optics : Color, rendering and metamerism

ToC Category:
Vision, Color, and Visual Optics

History
Original Manuscript: September 2, 2010
Revised Manuscript: October 21, 2010
Manuscript Accepted: November 26, 2010
Published: December 1, 2010

Citation
Kevin A. G. Smet, Wouter R. Ryckaert, Michael R. Pointer, Geert Deconinck, and Peter Hanselaer, "Memory colours and colour quality evaluation of conventional and solid-state lamps," Opt. Express 18, 26229-26244 (2010)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-18-25-26229


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