Systematic Changes in Gamut Size Affect Color Preference

Past work has suggested that light source color rendition can be better characterized using measures of color fidelity (for example, IES R f , Color Quality Scale (CQS) Q f ) and relative gamut (for example, IES R g , CQS Q g ) together, rather than using only a single measure of color fidelity. Sou...

Full description

Saved in:
Bibliographic Details
Published in:Leukos 2017-01, Vol.13 (1), p.23-32
Main Authors: Wei, Minchen, Houser, Kevin W.
Format: Article
Language:English
Subjects:
Accuracy
Assessments
color preference
color quality
color rendition
Color temperature
gamut shape
LED lighting
Light sources
Saturation (color)
Stimuli
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Past work has suggested that light source color rendition can be better characterized using measures of color fidelity (for example, IES R f , Color Quality Scale (CQS) Q f ) and relative gamut (for example, IES R g , CQS Q g ) together, rather than using only a single measure of color fidelity. Sources with larger gamut generally enhance object chroma, which past work has found to be preferred. Few studies, however, have investigated whether excessively large gamut may lower color preference due to oversaturation. A pilot study was conducted to investigate whether an upper limit of gamut should be set to avoid oversaturation. Six nearly metameric stimuli with a correlated color temperature (CCT) near 2950 K were created using a spectrally tunable luminaire. The stimuli had a similar Q f near 50 and a range of Q g from 97 to 140. Eighteen participants between 21 and 35 years made color preference assessments of chromatic objects in a viewing booth. A forced choice protocol was employed, where participants evaluated pairs in a sequential mode. Participants preferred the appearance of object colors under stimuli having a Q g between 116 and 134 to those under the stimuli having a Q g of 97, 106, or 140, illustrating that some increase in saturation was preferred and also suggesting that oversaturation may reduce preference. The colors red, green, and orange most strongly influenced participants' assessments, indicating that gamut shape, in addition to gamut area, is an important component of predicting color preference.
ISSN:1550-2724
1550-2716
DOI:10.1080/15502724.2016.1192402