A Biophysically‐Based Spectral Model of Light Interaction with Human Skin

Abstract

Despite the notable progress in physically-based rendering, there is still a long way to go before we can automatically generate predictable images of biological materials. In this paper, we address an open problem in this area, namely the spectral simulation of light interaction with human skin. We propose a novel biophysicallybased model that accounts for all components of light propagation in skin tissues, namely surface reflectance, subsurface reflectance and transmittance, and the biological mechanisms of light absorption by pigments in these tissues. The model is controlled by biologically meaningful parameters, and its formulation, based on standard Monte Carlo techniques, enables its straightforward incorporation into realistic image synthesis frameworks. Besides its biophysically-based nature, the key difference between the proposed model and the existing skin models is its comprehensiveness, i.e., it computes both spectral (reflectance and transmittance) and scattering (bidirectional surface-scattering distribution function) quantities for skin specimens. In order to assess the predictability of our simulations, we evaluate their accuracy by comparing results from the model with actual skin measured data. We also present computer generated images to illustrate the flexibility of the proposed model with respect to variations in the biological input data, and its applicability not only in the predictive image synthesis of different skin tones, but also in the spectral simulation of medical conditions.

Iridescent structural colour production in male blue-black grassquit feather barbules: the role of keratin and melanin

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

“…The thickness of the dermis ranges between 450 and 650 µm [27,47]. Depending on body location and tissue health, the volume of blood in the dermis ranges between 0.2% and 7% [42,48,49]. Approximately half of the blood volume is occupied by erythrocytes (red blood cells) which are responsible for oxygen transfer from the lungs to the rest of the body [42,49].…”

A Study of Skin Reflectance Using Kubelka-Munk Model

“…Table 2의 다섯 개 의 변수 중 다른 네 개의 변수는 아시아인 범위의 평균 값으로 고정시키고, 다른 하나의 변수를 최소 및 최대 로 정하였을 때의 차이를 구하였다 [10,12,13]. 파라미터들의 변수 변화에 따른 분광반사율의 변화 는 문헌 값과 상응하는 결과를 보여주었다 [14].…”