Optical properties of skin

Su, Yixiong; Wang, Wenbo; Jiang, Chengzhi

doi:10.1117/12.482974

Cited by 8 publications

(5 citation statements)

References 35 publications

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“…As in [28,29] we are using polarized light to separate both reflected components. Light which reflects specularly off the skin will maintain the polarization of the incident light; however, light that emerges from below the surface will have been depolarized by scattering interactions.…”

Section: Getting Texturementioning

confidence: 99%

Modeling and Animating Virtual Humans for Real-Time Applications

Eckes¹,

Hülsken²,

Kuck³

et al. 2007

IJVR

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We report on the workflow for the creation of realistic virtual anthropomorphic characters. 3D-models of human heads have been reconstructed from real people by following a structured light approach to 3D-reconstruction. We describe how these high-resolution models have been simplified and articulated with blend shape and mesh skinning techniques to ensure real-time animation. The full-body models have been created manually based on photographs. We present a system for capturing whole body motions, including the fingers, based on an optical motion capture system with 6 DOF rigid bodies and cybergloves. The motion capture data was processed in one system, mapped to a virtual character and visualized in real-time. We developed tools and methods for quick post processing. To demonstrate the viability of our system, we captured a library consisting of more than 90 gestures.

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Section: Getting Texturementioning

confidence: 99%

Modeling and Animating Virtual Humans for Real-Time Applications

Eckes¹,

Hülsken²,

Kuck³

et al. 2007

IJVR

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“…The scattering profile of human skin has two main components: surface and subsurface scattering. Surface scattering follows Fresnel equations [SWXJ02], and it is affected by the presence of folds in the stratum corneum. The aspect ratio of these mesostructures depends on biological factors such as aging and hydration [TKK * 01, TKL * 02].…”

Section: Light Interaction With Human Skinmentioning

confidence: 99%

“…The Fresnel equations [SWXJ02] indicate how much light is reflected and transmitted at a surface as a function of the angle of incidence (θ i ) and the refractive indices of the incidence and transmissive media. The refractive indices of the stratum corneum, epidermis, papillary dermis and reticular dermis are denoted by η s , η e , η p and η r respectively.…”

Section: The Biospec Modelmentioning

confidence: 99%

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

Krishnaswamy

Baranoski

2004

Computer Graphics Forum

118

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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.

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“…The scattering profile of human skin has two main components: surface and subsurface scattering. Surface scattering follows Fresnel equations [82], and it is affected by the presence of folds in the stratum corneum. The aspect ratio of these mesostructures depends on biological factors such as aging and hydration [84,85].…”

Section: Scattering Profilementioning

confidence: 99%

An Introduction to Light Interaction with Human Skin

Baranoski

Krishnaswamy

2004

RITA

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Despite the notable progress in physically-based rendering, there is still a long way to go before one can automatically generate predictable images of organic materials such as human skin. In this tutorial, the main physical and biological aspects involved in the processes of propagation and absorption of light by skin tissues are examined. These processes affect not only skin appearance, but also its health. For this reason, they have also been the object of study in biomedical research. The models of light interaction with human skin developed by the biomedical community are mainly aimed at the simulation of skin spectral properties which are used to determine the concentration and distribution of various substances. In computer graphics, the focus has been on the simulation of light scattering properties that affect skin appearance. Computer models used to simulate these spectral and scattering properties are described in this tutorial, and their strengths and limitations discussed.

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Optical properties of skin

Cited by 8 publications

References 35 publications

Modeling and Animating Virtual Humans for Real-Time Applications

Modeling and Animating Virtual Humans for Real-Time Applications

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

An Introduction to Light Interaction with Human Skin

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