Experimental validation of colour rendition specification criteria based on ANSI/IES TM-30-18

Experimental validation of colour rendition specification criteria based on ANSI/IES TM-30-18. Royer, M., Wei, M, Wilkerson, A, & Safranek, S Lighting Research & Technology, 52(3):323–349, May, 2020.

Paper doi abstract bibtex

An experiment was conducted to examine colour rendition specification criteria. Twenty-five participants each evaluated 90 lighting scenes in a room filled with objects. The lighting scenes included nine chromaticity groups, each with 10 systematically-varied colour rendition conditions designed to meet or not meet previously proposed colour preference specification criteria using the ANSI/IES TM-30-18 measures: Fidelity Index ( R f ), Gamut Index ( R g ) and red Local Chroma Shift ( R cs,h1 ). The colour rendition conditions did not meet the criterion for none, one, two or all three of these measures. Participants, who chromatically adapted to each chromaticity group, rated the objects' colour appearance on eight-point scales for saturated–dull, normal–shifted and like-dislike (preference), as well as a binary for acceptable or unacceptable. The findings corroborate past work, but also indicate that colour preference criteria could be adjusted slightly to improve performance, with Tier A having R f ≥ 78, R g ≥ 95 and −1% ≤ R cs,h1 ≤ 15%, Tier B having R f ≥ 74, R g ≥ 92 and −7% ≤ R cs,h1 ≤ 19%, and Tier C having R f ≥ 70, R g ≥ 89 and −12% ≤ R cs,h1 ≤ 23%. A companion regression analysis shows models based on R f , R g and R cs,h1 were superior in predicting colour preference compared to those using other measures of colour rendition.

@article{royer_experimental_2020,
	title = {Experimental validation of colour rendition specification criteria based on {ANSI}/{IES} {TM}-30-18},
	volume = {52},
	issn = {1477-1535, 1477-0938},
	url = {http://journals.sagepub.com/doi/10.1177/1477153519857625},
	doi = {10.1177/1477153519857625},
	abstract = {An experiment was conducted to examine colour rendition specification criteria. Twenty-five participants each evaluated 90 lighting scenes in a room filled with objects. The lighting scenes included nine chromaticity groups, each with 10 systematically-varied colour rendition conditions designed to meet or not meet previously proposed colour preference specification criteria using the ANSI/IES TM-30-18 measures: Fidelity Index ( R
              f
              ), Gamut Index ( R
              g
              ) and red Local Chroma Shift ( R
              cs,h1
              ). The colour rendition conditions did not meet the criterion for none, one, two or all three of these measures. Participants, who chromatically adapted to each chromaticity group, rated the objects' colour appearance on eight-point scales for saturated–dull, normal–shifted and like-dislike (preference), as well as a binary for acceptable or unacceptable. The findings corroborate past work, but also indicate that colour preference criteria could be adjusted slightly to improve performance, with Tier A having R
              f
               ≥ 78, R
              g
               ≥ 95 and −1\% ≤  R
              cs,h1
               ≤ 15\%, Tier B having R
              f
               ≥ 74, R
              g
               ≥ 92 and −7\% ≤  R
              cs,h1
               ≤ 19\%, and Tier C having R
              f
               ≥ 70, R
              g
               ≥ 89 and −12\% ≤  R
              cs,h1
               ≤ 23\%. A companion regression analysis shows models based on R
              f
              , R
              g
              and R
              cs,h1
              were superior in predicting colour preference compared to those using other measures of colour rendition.},
	language = {en},
	number = {3},
	urldate = {2022-01-29},
	journal = {Lighting Research \& Technology},
	author = {Royer, Mp and Wei, M and Wilkerson, A and Safranek, S},
	month = may,
	year = {2020},
	pages = {323--349},
}

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The lighting scenes included nine chromaticity groups, each with 10 systematically-varied colour rendition conditions designed to meet or not meet previously proposed colour preference specification criteria using the ANSI/IES TM-30-18 measures: Fidelity Index ( R f ), Gamut Index ( R g ) and red Local Chroma Shift ( R cs,h1 ). The colour rendition conditions did not meet the criterion for none, one, two or all three of these measures. Participants, who chromatically adapted to each chromaticity group, rated the objects' colour appearance on eight-point scales for saturated–dull, normal–shifted and like-dislike (preference), as well as a binary for acceptable or unacceptable. The findings corroborate past work, but also indicate that colour preference criteria could be adjusted slightly to improve performance, with Tier A having R f ≥ 78, R g ≥ 95 and −1% ≤ R cs,h1 ≤ 15%, Tier B having R f ≥ 74, R g ≥ 92 and −7% ≤ R cs,h1 ≤ 19%, and Tier C having R f ≥ 70, R g ≥ 89 and −12% ≤ R cs,h1 ≤ 23%. 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Twenty-five participants each evaluated 90 lighting scenes in a room filled with objects. The lighting scenes included nine chromaticity groups, each with 10 systematically-varied colour rendition conditions designed to meet or not meet previously proposed colour preference specification criteria using the ANSI/IES TM-30-18 measures: Fidelity Index ( R\n f\n ), Gamut Index ( R\n g\n ) and red Local Chroma Shift ( R\n cs,h1\n ). The colour rendition conditions did not meet the criterion for none, one, two or all three of these measures. Participants, who chromatically adapted to each chromaticity group, rated the objects' colour appearance on eight-point scales for saturated–dull, normal–shifted and like-dislike (preference), as well as a binary for acceptable or unacceptable. 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