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Optical Review

, Volume 25, Issue 1, pp 1–9 | Cite as

Evaluating visibility of age spot and freckle based on simulated spectral reflectance distribution and facial color image

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Abstract

In this research, we evaluate the visibility of age spot and freckle with changing the blood volume based on simulated spectral reflectance distribution and the actual facial color images, and compare these results. First, we generate three types of spatial distribution of age spot and freckle in patch-like images based on the simulated spectral reflectance. The spectral reflectance is simulated using Monte Carlo simulation of light transport in multi-layered tissue. Next, we reconstruct the facial color image with changing the blood volume. We acquire the concentration distribution of melanin, hemoglobin and shading components by applying the independent component analysis on a facial color image. We reproduce images using the obtained melanin and shading concentration and the changed hemoglobin concentration. Finally, we evaluate the visibility of pigmentations using simulated spectral reflectance distribution and facial color images. In the result of simulated spectral reflectance distribution, we found that the visibility became lower as the blood volume increases. However, we can see that a specific blood volume reduces the visibility of the actual pigmentations from the result of the facial color images.

Keywords

Visibility Age spot Freckle Facial color image Subjective evaluation Monte Carlo simulation 

Notes

Acknowledgements

This research is partly supported by JSPS Grants-in-Aid for Scientific Research (24560040).

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Copyright information

© The Optical Society of Japan 2017

Authors and Affiliations

  1. 1.Graduate School of Advanced Integration ScienceChiba UniversityChibaJapan

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