Skin Color Measurements in Terms of CIELAB Color Space Values

Weatherall, I. L.; Coombs, Bernard D.

doi:10.1111/1523-1747.ep12616156

Cited by 303 publications

(237 citation statements)

References 11 publications

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“…An SNR study revealed that the chrominance a provides the best discrimination of erythematous skin versus normal skin. These results confirm those obtained by Fullerton et al [9] and Weatherall et al [10]; they recommend the use of the Lab color space, which takes into account the non linearity of color perception by the human eye.…”

Section: Colorimetric Studysupporting

confidence: 91%

Segmentation of Erythema from Skin Photographs for Assisted Diagnosis in Allergology

Roullot

Autegarden

Devriendt

et al. 2005

Pattern Recognition and Image Analysis

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Abstract. More than 2 people out of 10 suffer from allergies, which can take various forms, from eczema to anaphylactic reactions with possible lethal consequences. Diagnosis is achieved through so-called prick-tests or IDR (intradermo-reaction): the injection of a small quantity of substances suspected to cause the allergic manifestation induces an erythema, the size of which is a useful indicator for the diagnosis. The manual surface measurement is timeconsuming and inaccurate. This article presents a method for the semi-automatic measurement of the erythema from a photograph of the skin, taken in such conditions that lighting problems are minimized. The method is based on region growing and takes advantage of the most significant color spaces; the Lab space appears to be the best suited. It was tested on nearly 100 images, taken by various operators, on patients with various skin pigmentations; it gave promising results and proved to be robust.

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Section: Colorimetric Studysupporting

confidence: 91%

Segmentation of Erythema from Skin Photographs for Assisted Diagnosis in Allergology

Roullot

Autegarden

Devriendt

et al. 2005

Pattern Recognition and Image Analysis

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“…The most commonly used color model is the Commission International d'Eclairage (CIE) L*a*b* system established in 1976 [23], which has been typically employed in genetic studies of pigmentation information collected via spectrophotometers [24][25][26]. In the CIELab color model, any color can be represented by three variables: L*, the lightness-darkness axis; a*, the red-green axis; and b*, the blue-yellow axis, which can be plotted in three-dimensional space [27]. Another color model is the HSB (or HSV) model, which consists of hue, saturation, and brightness dimensions.…”

Section: Pigmentation Phenotypes: Quantification and Normalization Mamentioning

confidence: 99%

Colorful DNA polymorphisms in humans

Liu

Wen

Kayser

2013

Seminars in Cell & Developmental Biology

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a b s t r a c tIn this review article we summarize current knowledge on how variation on the DNA level influences human pigmentation including color variation of iris, hair, and skin. We review recent progress in the field of human pigmentation genetics by focusing on the genes and DNA polymorphisms discovered to be involved in determining human pigmentation traits, their association with diseases particularly skin cancers, and their power to predict human eye, hair, and skin colors with potential utilization in forensic investigations.

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“…Then, using a spectrophotometer (CM-2600D, Konica Minolta, Japan), an experienced lab technician measured eight selected parts of the face for each subject: center of the forehead, right cheekbone, right cheek, under the chin, left cheek, left cheek bone, philtrum, and under the lips. Each measurement was taken three times consecutively, and an average was calculated (Weatherall and Coombs 1992;Piérard 1998;Ahn et al 2002;Latreille et al 2007). …”

Section: Measurement Of Facial Tone L*a*b* Valuesmentioning

confidence: 99%

Facial Lab* values and preferred base makeup products among native Korean women: a clinical study

Jung¹,

Jo²,

Kwon³

et al. 2017

biomed dermatol

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Background: Bare face L*a*b* values are needed to serve as a standard reference point for the development of base makeup products for Korean women. Methods: A total of 543 Korean women ranging in age from their 20s to 50s underwent spectrophotometer skin analysis under constant temperature (22 ± 2%) and humidity (50 ± 5%) conditions. Eight parts of each subject's face (center of the forehead, right cheekbone, right cheek, under the chin, left cheek, left cheekbone, philtrum, and under the lips) were measured, and average values were calculated. Subjects were then asked to complete questionnaires regarding their use and preferences for base makeup products. Results: Skin tone was classified into three categories (dark, normal, bright) based on L* values. Compared with the contrast value, the dark group L* was 60.66 and the normal group L* was 63.87 (with a difference of 3.21), and the bright group L* was 66.66 (with a difference of 2.79 from the normal group). According to the survey responses regarding preferences and use of base makeup products, the most common answer for all respondents regardless of age was that their skin tone was average or slightly darker than that of their peers. Preferred base makeup products usually were found to be of slightly brighter color than actual skin tone. As in previous studies, the most frequently used base makeup product regardless of age was BB cream. Conclusions: Given that the average L* standard deviation between groups was 3, a difference of one step in skin tone may be considered to be equivalent to this L* value difference. The survey results suggest that target colors for base makeup product development should be brighter than bare face tones.

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Skin Color Measurements in Terms of CIELAB Color Space Values

Cited by 303 publications

References 11 publications

Segmentation of Erythema from Skin Photographs for Assisted Diagnosis in Allergology

Segmentation of Erythema from Skin Photographs for Assisted Diagnosis in Allergology

Colorful DNA polymorphisms in humans

Facial Lab* values and preferred base makeup products among native Korean women: a clinical study

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Skin Color Measurements in Terms of CIELAB Color Space Values

Cited by 303 publications

References 11 publications

Segmentation of Erythema from Skin Photographs for Assisted Diagnosis in Allergology

Segmentation of Erythema from Skin Photographs for Assisted Diagnosis in Allergology

Colorful DNA polymorphisms in humans

Facial L*a*b* values and preferred base makeup products among native Korean women: a clinical study

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Product

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Facial Lab* values and preferred base makeup products among native Korean women: a clinical study