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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 37, Iss. 23 — Dec. 1, 2012
  • pp: 4997–4999

De-entangling colorfulness and fidelity for a complete statistical description of color quality

Jesús M. Quintero, Charles E. Hunt, and Josep Carreras  »View Author Affiliations


Optics Letters, Vol. 37, Issue 23, pp. 4997-4999 (2012)
http://dx.doi.org/10.1364/OL.37.004997


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Abstract

In this Letter, the main attributes known to affect color quality are treated statistically over a set of 118 spectra representing the current mainstream lighting technology. The color rendering index (CRI) is used to assess color fidelity while colorfulness is used to complement CRI-Ra, supported by the growing evidence that assessment of light spectra cannot overlook color preference inputs. Colorfulness is evaluated by our optimal color (Oc) index, through a code that computes the (MacAdam) theoretical maximum volumetric gamut of objects under a given illuminant for all the spectra in our database. Pearson correlation coefficients for CRI-Ra, the (Y. Ohno’s) color quality scale (CQS) and Oc show a high correlation (0.950) between CRI-Ra and CQS-Qa, while Oc shows the lowest correlation (0.577) with CRI-Ra, meaning that Oc represents the best complement to CRI-Ra and Qa for an in-depth study of color quality.

© 2012 Optical Society of America

OCIS Codes
(230.3670) Optical devices : Light-emitting diodes
(330.1710) Vision, color, and visual optics : Color, measurement
(330.1730) Vision, color, and visual optics : Colorimetry
(330.5020) Vision, color, and visual optics : Perception psychology

ToC Category:
Vision, Color, and Visual Optics

History
Original Manuscript: September 10, 2012
Revised Manuscript: October 29, 2012
Manuscript Accepted: October 30, 2012
Published: November 30, 2012

Virtual Issues
Vol. 8, Iss. 1 Virtual Journal for Biomedical Optics

Citation
Jesús M. Quintero, Charles E. Hunt, and Josep Carreras, "De-entangling colorfulness and fidelity for a complete statistical description of color quality," Opt. Lett. 37, 4997-4999 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-23-4997


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