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
More filters
Journal ArticleDOI
Fast method for inverse determination of optical parameters from two measured signals
TL;DR: A fast method combining graphic processing unit-accelerated Monte Carlo simulations of individual photons and a new perturbation scheme for a 300-fold speedup in comparison to conventional CPU-based approaches is presented.
Journal ArticleDOI
The use of the adding-doubling method for the optical optimization of planar luminescent down shifting layers for solar cells
Sven Leyre,Jan Cappelle,Guy Durinck,Aimi Abass,Johan Hofkens,Geert Deconinck,Peter Hanselaer +6 more
TL;DR: The potential of the adding-doubling method is investigated to simulate the optical behavior of an encapsulated solar cell including a planar luminescent down shifting layer and the results are compared with traditional Monte Carlo ray tracing simulations.
Journal ArticleDOI
L p Regularization for Bioluminescence Tomography Based on the Split Bregman Method.
TL;DR: The Split Bregman iteration method is able to minimize the Lp regularization problem and achieve fast and accurate reconstruction in BLT.
Journal ArticleDOI
Absorption Coefficient Measurements of Strongly Scattering Media Using Time-Resolved Transmittance of a Short Pulse in Near-Infrared (NIR) Wavelength Range
TL;DR: In this paper, the authors measured curves of time-resolved transmittance of the pulse through the media were used to estimate the optical properties of the media, and the estimated absorption coefficients were in good agreement with those measured in a nonscattering case by a spectrophotometer.
Journal ArticleDOI
Deep-penetration photoacoustic array imaging of calcifications.
Tsai-Chu Hsiao,Yao-Yu Cheng,Wan-Ting Tein,Shih-Bin Luo,De-Yi Chiou,Ren-Jei Chung,Meng-Lin Li +6 more
TL;DR: PA imaging is a promising technique for real-time visualization of breast calcifications based on a medical ultrasound array imaging platform and the feasibility of differentiating HA from blood by the PA spectroscopic technique was presented and the mechanism of the HA signal generation was discussed.
References
More filters
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.