Estimation of Radiative Properties for Human Skin by Reflection Profile Measurement

Yamada, Jun; Arita, Yuichi; An, Akihiro; Mıura, Yoshimasa; Takata, Sadaki

doi:10.1299/kikaib.74.2034

Cited by 4 publications

(7 citation statements)

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“…The details of this method are provided in Ref. [19]. The skin is regarded as an infinitely wide parallel plane.…”

Section: Inverse Analysis Methodsmentioning

confidence: 99%

“…Many researchers have measured the optical properties of human skin [11][12][13][14][15][16][17][18][19][20]. The methods used the integrating sphere technique [12], diffuse optical spectroscopic imaging (DOSI) [13][14][15][16], and the reflection spatial profile measurement (RSPM) [17][18][19][20]. Integrating sphere techniques are generally applicable for measuring the optical properties of various absorption and scattering media such as human skin.…”

Section: (S ω)mentioning

confidence: 99%

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In Vivo Measurement of Optical Properties of Human Skin for 450–800 nm and 950–1600 nm Wavelengths

Kono

Yamada

2019

Int J Thermophys

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Laser or light-emitting diode therapy has been developed for medical care and skin rejuvenation. Some of these therapies are not only ineffective, but also unsafe. To address these issues, the optical properties of human skin that characterize radiation transfer to the skin have to be clearly understood. In this study, we use in-house instruments to measure the in vivo absorption and scattering coefficients for 198 Japanese participants in visible (450-800 nm) and near-infrared (950-1600 nm) region. The average values and standard deviations of the optical properties are recorded. The effects of age, gender, and body parts on these parameters are analyzed. For the scattering coefficient, the highest value is observed for the inner forearm and the lowest for the region between the thumb and forefinger; females exhibit higher values than males in the visible and some of near-infrared wavelengths; and the value decreases with the age for males in the visible region. In terms of the absorption coefficient, males exhibit higher values than females in the visible region and some of near-infrared wavelength; and the values increase with age in the visible region; the magnitude relations between the body parts differ with the wavelength.

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“…The details of this method are provided in Ref. [19]. The skin is regarded as an infinitely wide parallel plane.…”

Section: Inverse Analysis Methodsmentioning

confidence: 99%

Section: (S ω)mentioning

confidence: 99%

In Vivo Measurement of Optical Properties of Human Skin for 450–800 nm and 950–1600 nm Wavelengths

Kono

Yamada

2019

Int J Thermophys

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“…The numerical model used for the inverse analysis is based on that previously reported [14]. Skin is assumed an infinitely wide and parallel plane.…”

Section: Numerical Model For Inverse Methodsmentioning

confidence: 99%

“…Thus far, the optical properties of skin have mainly been investigated for medical applications, with significant research reflecting this focus [9][10][11][12][13][14]. The methods used for measuring optical properties include the integrating sphere technique [10], diffuse optical spectroscopic imaging (DOSI) [11,12], and the reflection spatial profile measurement (RSPM) [14] proposed by the current authors.…”

Section: Introductionmentioning

confidence: 99%

“…The methods used for measuring optical properties include the integrating sphere technique [10], diffuse optical spectroscopic imaging (DOSI) [11,12], and the reflection spatial profile measurement (RSPM) [14] proposed by the current authors. Integrating sphere techniques are widely used to measure the optical properties of both skin and various scattering and absorbing media.…”

Section: Introductionmentioning

confidence: 99%

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Development of Measurement Instrument for Optical Properties of Human Skin in Vivo

Kono

Yamada

2017

Jpn. J. Thermophys. Prop.

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In order to measure the optical properties of human skin in vivo, we developed a practical instrument that provides simple, prompt, and accurate measurements. The instrument utilized a reflection spatial profile measurement (RSPM), which estimated the optical properties by measuring radiation reflected from skin under stripe-patterned irradiation. RSPM can measure optical properties over a wide wavelength range, but it carries the risk of aberrations in the optical system that decrease measurement accuracy. Therefore, in this study, Zemax optical design software was used to evaluate the optical performance, and the percentage error caused by the optical performance was clarified by Monte Carlo simulations. Using the results, we developed a high-performance instrument with only −0.4% error in measurement accuracy. In addition, we demonstrated that the instrument enables us to measure differences in optical properties caused by changing the moisture content of skin.

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Study on quantifying feel of translucency for scattering material

Yamada

Jin

Okamoto

2015

Transactions of the JSME (In Japanese)

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Estimation of Radiative Properties for Human Skin by Reflection Profile Measurement

Cited by 4 publications

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In Vivo Measurement of Optical Properties of Human Skin for 450–800 nm and 950–1600 nm Wavelengths

In Vivo Measurement of Optical Properties of Human Skin for 450–800 nm and 950–1600 nm Wavelengths

Development of Measurement Instrument for Optical Properties of Human Skin in Vivo

Study on quantifying feel of translucency for scattering material

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