Performance of the 14 skin-colored patches in accurately estimating human skin color

Choi, Hayan; Choi, Kee‐Hyun; Suk, Hyeon‐Jeong

doi:10.2352/issn.2470-1173.2017.17.coimg-424

Cited by 5 publications

(2 citation statements)

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“…In addition to the economic advantages of creating our own reference charts, additional advantages can be obtained from a tailored design of the reference. As it has already been mentioned in the introduction, reference colours can be chosen to closely match the ones of the sensors used, further improving the precision in the estimation of the real colour from the images [17,18]. The number and organization of the colour patches can also be modified.…”

Section: Discussionmentioning

confidence: 99%

“…The second one is that allows the selection of colour, number, and disposition of references in the colour chart, optimizing the references for the calibration of the images. It has been demonstrated, in other applications, that a colour chart specifically tailored to the colours to be measured can yield a better performance than a generalpurpose one [17,18].…”

Section: Introductionmentioning

confidence: 99%

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Design and validation of tailored colour reference charts for monitoring cultural heritage degradation

et al. 2021

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Colour changes of cultural heritage objects can be related with degradation of materials, thus a proper colour monitoring system can be used to detect conservation problems. With this purpose, a monitoring methodology for cultural heritage preventive conservation based on tailored colour reference charts and image analysis is proposed.Reference colour charts have been designed and tested for use in museums. Charts containing 64 colour patches have been printed using high-stability inks on 4 different substrates: Acid-free paper SkyLight, Acid-free paper covered with a propylene film, FOREX® and GlassPack. The stability has been studied by accelerated ageing in an UV chamber, and the harmlessness of the materials by Oddy Test. The final selection of material, laminated paper, is a balance between the colour change upon ageing and the performance in the Oddy Test. Using this material and the proposed design, colour change of copper and silver coupons has been assessed using images that are adjusted and calibrated by an adaptive calibration framework employing a given set of reference colours which homogenises the visual information in the supplied images. Thus, regardless of the camera of origin, any processed picture will deliver reliable information of the state of the colour in the metal surfaces at the moment it was taken.Results demonstrate the adequacy of the approach and the design for colour calibration, so these charts can be used to monitor colour change of sensitive materials –metal coupons– using photographs. As colour change of reference metals is a consequence of corrosion by environmental factors this may be used as a measure of air quality in museum environments. This methodology can be used to design a low-cost preventive conservation tool, where colour change of metal coupons –or other reference materials– can be followed through image analysis of pictures taken periodically by conservators or visitors, introducing citizen science in the conservation strategy.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Design and validation of tailored colour reference charts for monitoring cultural heritage degradation

et al. 2021

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Towards Racially Unbiased Skin Tone Estimation via Scene Disambiguation

Feng

Bolkart

Tesch

et al. 2022

Lecture Notes in Computer Science

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Melanometry for objective evaluation of skin pigmentation in pulse oximetry studies

Vasudevan,

Vogt,

Weininger

et al. 2024

Commun Med

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Pulse oximetry enables real-time, noninvasive monitoring of arterial blood oxygen levels. However, results can vary with skin color, thus detecting disparities during clinical validation studies requires an accurate measure of skin pigmentation. Recent clinical studies have used subjective methods such as self-reported color, race/ethnicity to categorize skin. Melanometers based on optical reflectance may offer a more effective, objective approach to assess pigmentation. Here, we review melanometry approaches and assess evidence supporting their use as clinical research tools. We compare performance data, including repeatability, robustness to confounders, and compare devices to each other, to subjective methods, and high-quality references. Finally, we propose best practices for evaluating melanometers and discuss alternate optical approaches that may improve accuracy. Whilst evidence indicates that melanometers can provide superior performance to subjective approaches, we encourage additional research and standardization efforts, as these are needed to ensure consistent and reliable results in clinical studies.

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Performance of the 14 skin-colored patches in accurately estimating human skin color

Cited by 5 publications

References 0 publications

Design and validation of tailored colour reference charts for monitoring cultural heritage degradation

Design and validation of tailored colour reference charts for monitoring cultural heritage degradation

Towards Racially Unbiased Skin Tone Estimation via Scene Disambiguation

Melanometry for objective evaluation of skin pigmentation in pulse oximetry studies

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