1 November 2011 Simple and effective method for measuring translucency using edge loss: optimization of measurement conditions and applications for skin
Author Affiliations +
J. of Biomedical Optics, 16(11), 117003 (2011). doi:10.1117/1.3646208
Abstract
We have developed a simple and effective method for everyday measurement of translucency with a handy spectral reflectometer using edge loss. Edge loss can be used to quantify the translucency index in terms of changes in reflectance under two types of measurement conditions. Here, a measurement condition represents the pairing of an illumination area and a measurement area. As a measure of the degree of lateral spread of reflected light, the translucency index can influence the appearance of human skin because this index represents eventual translucency. First, we estimated how edge loss changes when measurement conditions are varied. We then selected the combination of two measurement conditions of large and small edge loss to minimize errors. Finally, we estimated actual skin translucency changes before and after treatments comprising acetone-ether immersion and ultraviolet irradiation. The results were qualitatively consistent with the expectations under variations in absorbance and scattering capacity, indicating the effectiveness of this method in evaluating translucency. This method allows simultaneous measurement of translucency and reflectance as a spectrum, and also appears applicable for daily use, although common optical parameters cannot be derived using this method alone.
Kenichiro Yoshida, Nobutoshi Komeda, Nobutoshi Ojima, Kayoko Iwata, "Simple and effective method for measuring translucency using edge loss: optimization of measurement conditions and applications for skin," Journal of Biomedical Optics 16(11), 117003 (1 November 2011). http://dx.doi.org/10.1117/1.3646208
Submission: Received ; Accepted
JOURNAL ARTICLE
9 PAGES


SHARE
KEYWORDS
Translucency

Reflectivity

Skin

Scattering

Point spread functions

Ultraviolet radiation

Micro unmanned aerial vehicles

Back to Top