Colour preference varies with lighting application

Abstract

Numerous efforts have been made to investigate how to characterize the effect of light sources on colour preference. This paper describes a psychophysical experiment to compare the colour preference evaluation among three sources for different lighting applications. Three lighting applications – restaurant, retail display, and supermarket – were created in two side-by-side full-scaled rooms. It was found that the colour preference varied with the lighting applications. Although none of the existing single-value measures can predict the preference for all three applications, a single measure is necessary for general consumer use given a careful definition of general lighting. In addition, lighting application specific measures could be useful for lighting professionals and experts. To provide detailed information, a colour distortion icon, with improved test colour samples will be useful.

Evaluating colour preference of lighting with an empty light booth

“…This statement highlights the superiority of the real scene experiments, where the psychophysical studies were conducted under immersive conditions. 14,17,[20][21][22][23][24] Meanwhile, contrary to the real scene experiments which focus on certain targeted cases, the proposed empty-light-booth approach could serve as a universally applicable method for characterizing the colour preference of lighting for general conditions.…”

Light dominates colour preference when correlated colour temperature differs

“…with the aim of comprehensively investigating the measures on different subjective aspects of lighting quality 19 .…”

“…Colour preference has been reported to be impacted by several contextual factors which include the lighting application 19,21 , regional cultural difference [22][23][24] , illuminance level 25,26 and age difference 27 . Such research has contributed to the development of light quality evaluation but has also highlighted new problems.…”

A color graphic informing on the impact of electric lighting and coated glazing in complex architectural scenes

“…A colored surface inside the white circle means a loss of chroma, a surface outside means a gain in chroma. This graphic has proved to be useful to interpret the results of scientific articles …”

“…This graphic has proved to be useful to interpret the results of scientific articles. 9,10,[20][21][22][23][24] More recently, IES proposed, in IES TM-30, 15 a new color fidelity index to replace CIE Ra, as well as a color gamut index and a set of graphical representations including a color vector graphic and a color distortion graphic (see Figure 3(A) and Figure 3(B) respectively). These graphs show, in the a'b' plane of CAM02-UCS, the average color shifts of 99 samples divided into 16 hue bins (22.5 each).…”