Journal ArticleDOI
Determining the optical properties of turbid media by using the adding–doubling method
TLDR
A method is described for finding the optical properties of a slab of turbid material by using total reflection, unscattered transmission, and total transmission measurements and the intrinsic error in the method is < 3% when four quadrature points are used.Abstract:
A method is described for finding the optical properties (scattering, absorption, and scattering anisotropy) of a slab of turbid material by using total reflection, unscattered transmission, and total transmission measurements. This method is applicable to homogeneous turbid slabs with any optical thickness, albedo, or phase function. The slab may have a different index of refraction from its surroundings and may or may not be bounded by glass. The optical properties are obtained by iterating an adding–doubling solution of the radiative transport equation until the calculated values of the reflection and transmission match the measured ones. Exhaustive numerical tests show that the intrinsic error in the method is <3% when four quadrature points are used.read more
Citations
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Journal ArticleDOI
An Introduction to Light Interaction with Human Skin
TL;DR: The main physical and biological aspects involved in the processes of propagation and absorption of light by skin tissues are examined and computer models used to simulate these spectral and scattering properties are described and their strengths and limitations discussed.
Patent
Method and apparatus for 3-d imaging of internal light sources
TL;DR: In this paper, a 3D representation of the light sources inside a sample, such as the location, size, and brightness of such light sources, is obtained using imaging data and computer-implemented photon diffusion models.
Journal ArticleDOI
Multispectral scattering imaging and NIR interactance for apple firmness predictions
TL;DR: A multispectral imaging (MSI) system, using four discrete wavelengths (685, 850, 904 and 980 nm), has been developed and validated for making spatially resolved reflectance spectroscopy (SRRS) measurements as mentioned in this paper.
Journal ArticleDOI
Non-resonant power-efficient directional Nd:YAG ceramic laser using a scattering cavity
TL;DR: In this paper, a light trap design for non-resonant laser based on a spherical scattering cavity with a small entrance was proposed to achieve efficient and directional laser emission using a porous Nd3+:YAG ceramic.
Journal ArticleDOI
Determination of optical scattering properties in turbid media using Mueller matrix imaging.
TL;DR: A method to estimate the scattering coefficient contribution as a function of particle size in complex mixtures of polystyrene spheres is presented and it is shown how the scattering type is encoded within the Mueller matrix.
References
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Journal ArticleDOI
A simplex method for function minimization
John A. Nelder,R. Mead +1 more
TL;DR: A method is described for the minimization of a function of n variables, which depends on the comparison of function values at the (n 41) vertices of a general simplex, followed by the replacement of the vertex with the highest value by another point.
Book
Introduction to Numerical Analysis
Josef Stoer,Roland Bulirsch +1 more
TL;DR: This well written book is enlarged by the following topics: B-splines and their computation, elimination methods for large sparse systems of linear equations, Lanczos algorithm for eigenvalue problems, implicit shift techniques for theLR and QR algorithm, implicit differential equations, differential algebraic systems, new methods for stiff differential equations and preconditioning techniques.
Journal ArticleDOI
A review of the optical properties of biological tissues
TL;DR: The known optical properties (absorption, scattering, total attenuation, effective attenuation and/or anisotropy coefficients) of various biological tissues at a variety of wavelengths are reviewed in this article.
Journal ArticleDOI
New contributions to the optics of intensely light-scattering materials.
TL;DR: In this paper, the Gurevic and Judd formulas were derived from the Kubelka-Munk differential equations, and they are exact under the same conditions as in this paper, that is, when the material is perfectly dull and when the light, is perfectly diffused or if it is parallel and hits the specimen under an angle of 60° from normal.