Misa Hirose Saori Toyota, Norimichi Tsumura
Optical Review 2017 (accepted)
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 type of spatial distribution of age spot and freckle in
patch like images based on the simulated spectral reflectance. The spectral
reflectance is simulated by 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 by 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 reduce the visibility of the actual
pigmentations from the result of the facial color images.
[PDF] (to appeare)