Recommended methods for conducting human factors experiments on the subjective evaluation of colour rendition

Royer, Michael P.; Houser, Kevin W.; Durmus, Dorukalp; Esposito, Tony; Mao, Wei

doi:10.1177/14771535211019864

Cited by 12 publications

(16 citation statements)

References 227 publications

(406 reference statements)

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“…According to Royer et al (2021), the study made a detailed workflow for exploring the experimental environment and experimental process of color, which also provides a reference for our future research. Future research will address these issues [44].…”

Section: Discussionmentioning

confidence: 99%

Older Adults’ Response to Color Visibility in Indoor Residential Environment Using Eye-Tracking Technology

Wang

Cho

2022

Sensors

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Older adults spend relatively more time in indoor residential environments than young people. As their visual and cognitive abilities decline, they experience a high risk of accidents in indoor environments; thus, understanding their gaze behavior while considering cognitive capacity is essential in preventing potential accidents and planning for aging-friendly environments. The purpose of this study was to examine whether the use of color in living environments affects the visual attention of older adults. The following two experiments were conducted using eye-tracking technology: Experiment 1: Older adults’ gaze behaviors were measured while viewing four images consisting of nine sets of door–door frames with different color combinations of safety colors, black and white; and Experiment 2: Based on results from Experiment 1, images of simulated living environments were created, and older adults’ gaze behaviors were measured while viewing eight images in which two door colors were applied to verify spatial color visibility. Their cognitive state represented by the Mini-Mental State Examination (MMSE) was then compared with their gaze behavior. The results show that: (a) participants paid more attention to doors with color combinations including red (red–black and white–red) and remained longer on the red–black combination; (b) older adults looked at red–black doors faster than white doors in the same position; (c) the dwell time on a red–black door was longer than on that of the corresponding position of a white door; and (d) based on participants’ MMSE values, the gaze behaviors of the group with low cognition were less focused and observable than those of the group with normal cognition. The results of this study are significant in that they reveal that indoor color can improve the visibility of elements that can impact safety in the living environments of older adults and enhance their quality of life.

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Section: Discussionmentioning

confidence: 99%

Older Adults’ Response to Color Visibility in Indoor Residential Environment Using Eye-Tracking Technology

Wang

Cho

2022

Sensors

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“…To improve accuracy and precision of research studies, absolute spectral power distributions of light sources with radiometric quantities and Duv should be provided alongside CCT. 72 In visual experiments, researchers should also document the environmental conditions (i.e., surface reflectance of background and surrounding, luminance distributions), chromatic adaptation duration, and interobserver differences.…”

Section: Discussionmentioning

confidence: 99%

Correlated color temperature: Use and limitations

Durmus

2021

Lighting Research & Technology

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Correlated color temperature (CCT) is a one-dimensional metric that aims to quantify the perceived visual quality of nominal white light sources. It is often used as a proxy for the color quality of light sources due to its ease of use. However, CCT lacks the accuracy in communicating color information for research purposes. Two light sources with identical CCTs can appear perceptually different, and these differences are not estimated by CCT due to the loss of information caused by reducing spectral power distribution of light sources into a one-dimensional metric. Using supplemental metrics in addition to CCT, providing the absolute spectral power distribution of light sources in graphical and tabular form, and documenting and accounting for potential confounding factors, such as chromatic adaptation, can increase the validity of research results, improve the repeatability of studies, and help address replication concerns.

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“…This paper contributes to the ongoing research on the perception of the visual qualities of lighting and related areas (e.g. [27,49,57]). In addition, it responds to the need in the lighting and real estate industries for an established terminology to describe perceived light qualities.…”

Section: -1-3-measuring Perceived Light Qualitiesmentioning

confidence: 96%

“…For example, a method to evaluate perceived outdoor lighting quality (POLQ) was developed [43], while other approaches combine subjective ratings of lighting with performance tasks and physical lighting properties in offices [3,[44][45][46][47][48]. Others present methodological recommendations for evaluating subjective perceptions of different light qualities, such as perceived colour rendition [49]. The common feature of all these methods and tools is that they measure the hedonic that is the subjective, experience of lighting.…”

Section: -1-3-measuring Perceived Light Qualitiesmentioning

confidence: 99%

“…Another explanation may be that there are additional colour characteristics of the light sources that influence the perception more considerably. Other studies, such as Royer et al [49], emphasize that the span of colour rendition characteristics is important to consider in the experimental design when performing research on subjective evaluations of colour rendition. It also states that by focusing only on CIE Ra, other characteristics affecting the colour rendition might be missed.…”

Section: -1-1-influence Of the Properties Of Light Sources On Perceiv...mentioning

confidence: 99%

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User-Centric Measures of the Perceived Light Qualities of Lighting Products

Hiller

Boork²,

Enger³

et al. 2023

Emerg Sci J

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Nowadays, lighting planning is predominantly determined by the need to meet physically measurable requirements that are often based on current lighting standards. However, meeting the minimum technical requirements of the standards is no guarantee for a visually appealing light environment. Instead, requirements based on perceived light qualities also need to be included to achieve better user comfort. Taking perception-based qualities into consideration when creating a light environment is, for many, not an easy task. In addition, a common terminology for perceived light qualities is currently lacking, both in industry and in research. The aim of this paper is, therefore, to explore how perceived light qualities of white light sources can be described when employing user-centric measures. The focus was on the qualities of light colour and diffuse and distinct light since these qualities have a great impact on the visual impression of light. The perception was assessed by applying analytical sensory analysis to lighting products, a method found to be promising in previous work. The methodology is based on analytical measurement by the human senses, which is particularly valuable when developing a general terminology. Since sensory analysis is still quite new to the topic of lighting, the applicability of using the methodology to assess lighting in a real context was also investigated. The results of the studies showed that the perception of light qualities can be described using further concepts in addition to those currently used. For light colour, the concepts of reddish, bluish, yellowish, and greenish light colours proved suitable for providing a richer description of the quality. The concepts of diffuse and distinct light satisfactorily captured variations in light contrast produced by shadows, reflections, and sparkles. In addition, the studies revealed that analytical sensory analysis was applicable for assessing the perception of lighting in a real-world context. The latter means that knowledge gained in the laboratory can be translated into real environments. The user-centric measures investigated in this paper have contributed to the terminology related to perceived light qualities. These can complement the physical measures in lighting planning to promote light environments that are not only energy efficient and meet technical requirements, but also cater for increased user comfort. Doi: 10.28991/ESJ-2023-07-02-022 Full Text: PDF

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Recommended methods for conducting human factors experiments on the subjective evaluation of colour rendition

Cited by 12 publications

References 227 publications

Older Adults’ Response to Color Visibility in Indoor Residential Environment Using Eye-Tracking Technology

Older Adults’ Response to Color Visibility in Indoor Residential Environment Using Eye-Tracking Technology

Correlated color temperature: Use and limitations

User-Centric Measures of the Perceived Light Qualities of Lighting Products

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