A review of colour rendering indices and their application to commercial light sources

@article{Guo2004ARO,
  title={A review of colour rendering indices and their application to commercial light sources},
  author={Xin Guo and K Houser},
  journal={Lighting Research \& Technology},
  year={2004},
  volume={36},
  pages={183 - 197}
}
  • Xin Guo, K. Houser
  • Published 1 September 2004
  • Environmental Science
  • Lighting Research & Technology
,!The CIE colour rendering index (Ra) is the most widely used measure for quantifying and comparing the colour rendering performance of light sources. Despite its prominence Ra is not without limitations, including its reliance on reference standards and the inability to compare the Ra of sources with different correlated colour temperatures. Other colour rendering measures have been proposed including several based on colour preference, others based on absolute scales, and some that are… 

Figures and Tables from this paper

Visual colour rendering based on colour difference evaluations

The colour rendering index was introduced at a time when a second generation of fluorescent lamps was being brought onto the market. Today a new generation of light sources based on LED technology is

Measuring Colour Rendering – A New Approach II

Following a summary of the status of the current CIE Colour-Rendering Index, this report presents a method of measuring a coloured sample giving numbers which correlate highly with the appearance of

Characterising user preference for white LED light sources with CIE colour rendering index combined with a relative gamut area index

The CIE general colour rendering index (Ra) is still the only widely used and accepted colour fidelity index for characterising white light sources. However, user preference for light sources is not

Approaches to color rendering measurement

TLDR
The International Commission on Illumination (CIE) is in the process of developing and recommending a new metric of color rendition, based on measures of the gamut area of rendered object colors.

Assessing the variability of colour‐rendering indices using a random test‐colour method

This paper addresses the way in which the random selection of different sets of samples influences the values of two colour-rendering indices analogous to the ones proposed by the International

New Metric on Light Source Colour Quality : Colour Harmony Rendering Index Ferenc SzabÓ

This study describes the development of a new metric intended to improve the description of light source colour quality. Previously, the author has developed several colour harmony formulae to

Perceived lighting quality of LED sources for the presentation of fruit and vegetables

TLDR
A new approach to quantifying the visual color quality of light sources is presented and the color rendering of fruit and vegetables in terms of attractiveness, naturalness and suitability is investigated.

TOWARD COLOUR RENDERING METHOD OF WINDOW GLASS

TLDR
The findings indicated that the Lynes method is reliable to predict which glazing have the biggest impact on all aspects of colour but only in 6500K.

Assessing the colour quality of LED sources: Naturalness, attractiveness, colourfulness and colour difference

The CIE General Colour Rendering Index is currently the criterion used to describe and measure the colour-rendering properties of light sources. But over the past years, there has been increasing

Unique hue correction applied to the color rendering of LED light sources.

TLDR
A color rendering index that solves the problem of underestimation of this type of light source is needed to provide a score of subjective assessments made by real observers related to color fidelity, and results show discrepancies between the hue composition calculated theoretically using a color appearance model and hue composition evaluated byreal observers.
...

References

SHOWING 1-10 OF 37 REFERENCES

Colour samples and colour rendering of light sources

In the CIE method for specifying colour rendering properties of light sources, a rating is evaluated according to the average colour shift for eight colour samples. It is shown here that if a group

A combined colour preference - colour rendering index

A combined colour rendering-colour preference index for complexion colours is proposed, having its maximum for a source, whose spectral distribution is equal to that of the reference source, but for

In search of an improved method for assessing the colour rendering properties of light sources

The original experimental work of CIE to establish a method for assessing the colour rendering properties of light sources has been analysed. The spectral power distribution of the Standard Warm

Colour rendering capacity and luminous efficiency of a spectrum

TLDR
A measure for type B properties, the colour rendering capacity (CRC), which measures a spectrum’s potential for revealing a large number of different colours, is discussed, which is more effective as a carrier of visual information.

Colour rendering properties of light sources: New colour space for evaluation

A new colour space NC-IIIC, which is synthesized by nonlinear transformations of the tristimulus values X, Y and Z with nonlinear R-G and Y-B opponent colour response functions k 1 and k 2, is

Color-rendering capacity of illumination.

  • H. Xu
  • Physics
    Journal of the Optical Society of America
  • 1983
A new measure called color-rendering capacity is developed, by applying some of the concepts used in communication engineering, to describe another aspect of the color-rendering properties of

Absolute Color Rendering

TLDR
A method of doing this on an absolute basis is presented, followed by the reasons why this serves no useful purpose.

Color-Rendering Capability of Commercial Lamps

TLDR
Chromatic adaptation approximates object-color constancy adequately closely as long as both initial and final illuminants have color-rendering capability approximately as good as that of a daylightlike illuminant.

Color rendering: A calculation that estimates colorimetric shifts

Lights vary in their ability to render object spectral reflectances into color contrasts. When a light L1 is replaced by another L2, even if L2 matches L1 in chromaticity, systematic color shifts may

Lightness and chroma of computer simulated surfaces lit by lamps of different spectra

By calculating the lightness and chroma of computer simulated surfaces lit by different lamps, this study shows that the average CIE 1976 chroma C* uv of surfaces lit by light of different spectral