Image-based control of skin translucency

Abstract

We propose a method for skin translucency control of facial images. This is one of the important tasks in the reproduction of posters, TV commercials, movies, and so on. As the first step of processing, we extract the component maps of melanin, hemoglobin, and shading from skin color images by using our conventional method. The extracted shading component is controlled to change the translucency of the skin by simple kernel operations for the component. The efficiency for the change of translucency is confirmed by using the images of numerical and optical skin phantoms. The method is also applied into the real skin color image with the consideration of each component, and realistic change of skin translucency was observed from the resultant images synthesized by the proposed method.

Rapid and accurate estimation of blood saturation, melanin content, and epidermis thickness from spectral diffuse reflectance

“…Note that it typically took 2 minutes on a 2.66 GHz processor to compute the diffuse reflectance spectrum for 40 discrete wavelengths using Monte Carlo simulations [32]. On the other hand, the diffuse reflectance spectrum could be estimated nearly instantaneously using Equation (4) to (9). The accuracy of the semi-empirical model with respect to predictions by Monte Carlo simulations can also be assessed from Figure 3.…”

“…This technique investigates tissue structure, chromophore concentration, and health by measuring the tissue's optical properties. Commercially available devices typically analyze experimental data using the modified Beer-Lambert's law to determine the relative concentrations of tissue chromophores such as melanin, blood, water, or hemoglobin in arbitrary units [6,[8][9][10][11][12][13]. However the tissue scattering coefficient cannot be retrieved [10,14].…”

“…Current spectroscopic techniques are based on the assumption that tissue is homogeneous and that properties are independent of depth [6,7,9,11,22,23]. In reality, most bodily organs such as skin, the intestine, or the cervix are protected by a thin lining called the epithelial layer [24].…”

Analysis of light transport in scattering media

“…Face: Skin translucency has been the focus of much research. Tsumura [13] proposed a method to separate the hemoglobin and melanin components by independent component analysis, and estimated irradiance by the deconvolution of the point spread function of translucent media [14]. More recently, the layered structure of skin has been analyzed and used for photo-realistic rendering [15] [16].…”

Multiwavelength Digital Holography and Phase-Shifting Interferometry Selectively Extracting Wavelength Information: Phase-Division Multiplexing (PDM) of Wavelengths

“…Multiwavelength information helps us to perceive, analyze, and recognize an object such as body tissue or a tumor. Wavelength of light has the ability to clarify color and material distributions of an object [15], visualize the localization and dynamics of molecules with Raman scattering [16,17], and analyze the health of human skin [18]. In digital holography, the information of multiple wavelengths and 3D space is obtained by recording waves with multiple wavelengths that are irradiated from light sources, called multiwavelength/color digital holography [19,20].…”