Evaluation of whiteness indices

S. Ma; Minchen Wei; J. Liang; B. Wang; M.R. Pointer; M.R. Luo

Evaluation of whiteness indices

S. Ma, Minchen Wei, J. Liang, B. Wang, M.R. Pointer, M.R. Luo

The Hong Kong Polytechnic University

Research output: Chapter in book / Conference proceeding › Conference article published in proceeding or book › Academic research › peer-review

Abstract

White objects with FWAs have been manufactured for many decades to interact with conventional illuminants such as daylight and incandescent light. With the wide application of LED featuring tuneable spectral power distribution (spd), more research is preferred to investigate whiteness perception under different LED lighting conditions. With this in mind, an experiment was conducted. In this study, 50 textile and paper samples were assessed using 4 rating scales in a psyholphysical experiment. The results showed that SPD can strongly affect the performance of CIE and Uchida whiteness metrics. In order to extend the lighting conditions to different CCTs, these metrics were modified to adopt different white points using CAT02 chromatic adaptation to transofrm the other illuminants to D65. The new metrics outperformed the original model greatly.

Original language	English
Title of host publication	[Missing Source Name from PIRA]
Publisher	CIE International Commission on Illumination
Pages	112-117
Number of pages	6
ISBN (Print)	9783902842657
Publication status	Published - Mar 2016
Event	CIE Lighting Quality and Energy Efficiency Conference - Duration: 1 Mar 2016 → …

Conference

Conference	CIE Lighting Quality and Energy Efficiency Conference
Period	1/03/16 → …

Keywords

Whiteness perception
Whiteness formulae
LED
CCT

Cite this

@inproceedings{67f69afa5a024e64a6b0587237216388,

title = "Evaluation of whiteness indices",

abstract = "White objects with FWAs have been manufactured for many decades to interact with conventional illuminants such as daylight and incandescent light. With the wide application of LED featuring tuneable spectral power distribution (spd), more research is preferred to investigate whiteness perception under different LED lighting conditions. With this in mind, an experiment was conducted. In this study, 50 textile and paper samples were assessed using 4 rating scales in a psyholphysical experiment. The results showed that SPD can strongly affect the performance of CIE and Uchida whiteness metrics. In order to extend the lighting conditions to different CCTs, these metrics were modified to adopt different white points using CAT02 chromatic adaptation to transofrm the other illuminants to D65. The new metrics outperformed the original model greatly.",

keywords = "Whiteness perception, Whiteness formulae, LED, CCT",

author = "S. Ma and Minchen Wei and J. Liang and B. Wang and M.R. Pointer and M.R. Luo",

year = "2016",

month = mar,

language = "English",

isbn = "9783902842657",

pages = "112--117",

booktitle = "[Missing Source Name from PIRA]",

publisher = "CIE International Commission on Illumination",

note = "CIE Lighting Quality and Energy Efficiency Conference ; Conference date: 01-03-2016",

}

TY - GEN

T1 - Evaluation of whiteness indices

AU - Ma, S.

AU - Wei, Minchen

AU - Liang, J.

AU - Wang, B.

AU - Pointer, M.R.

AU - Luo, M.R.

PY - 2016/3

Y1 - 2016/3

N2 - White objects with FWAs have been manufactured for many decades to interact with conventional illuminants such as daylight and incandescent light. With the wide application of LED featuring tuneable spectral power distribution (spd), more research is preferred to investigate whiteness perception under different LED lighting conditions. With this in mind, an experiment was conducted. In this study, 50 textile and paper samples were assessed using 4 rating scales in a psyholphysical experiment. The results showed that SPD can strongly affect the performance of CIE and Uchida whiteness metrics. In order to extend the lighting conditions to different CCTs, these metrics were modified to adopt different white points using CAT02 chromatic adaptation to transofrm the other illuminants to D65. The new metrics outperformed the original model greatly.

AB - White objects with FWAs have been manufactured for many decades to interact with conventional illuminants such as daylight and incandescent light. With the wide application of LED featuring tuneable spectral power distribution (spd), more research is preferred to investigate whiteness perception under different LED lighting conditions. With this in mind, an experiment was conducted. In this study, 50 textile and paper samples were assessed using 4 rating scales in a psyholphysical experiment. The results showed that SPD can strongly affect the performance of CIE and Uchida whiteness metrics. In order to extend the lighting conditions to different CCTs, these metrics were modified to adopt different white points using CAT02 chromatic adaptation to transofrm the other illuminants to D65. The new metrics outperformed the original model greatly.

KW - Whiteness perception

KW - Whiteness formulae

KW - LED

KW - CCT

M3 - Conference article published in proceeding or book

SN - 9783902842657

SP - 112

EP - 117

BT - [Missing Source Name from PIRA]

PB - CIE International Commission on Illumination

T2 - CIE Lighting Quality and Energy Efficiency Conference

Y2 - 1 March 2016

ER -

Evaluation of whiteness indices

Abstract

Conference

Keywords

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