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
Determination of optical parameters of the porcine eye and development of a simulated model.
TL;DR: A complete optical characterization of the porcine eye is presented and a better understanding of the propagation of light in the eye by adding optical parts such as the iris, the sclera or the ciliary bodies is given.
Journal ArticleDOI
Colon phantoms with cancer lesions for endoscopic characterization with optical coherence tomography.
Natalia Zulina,Oscar Caravaca,Guiqiu Liao,Sara Gravelyn,Morgane Schmitt,Keshia Badu,Lucile Héroin,Michalina Gora +7 more
TL;DR: A 23 cm by 23‽cm optical phantom was developed to mimic the thickness and near-infrared optical properties of each anatomical layer of a human colon, as well as the surface topography of colorectal polyps and visual appearance compatible with white light endoscopy.
Journal ArticleDOI
Experimental validation of adding-doubling modeling of solar cells including luminescent down-shifting layers
Sven Leyre,Kristof Proost,Jan Cappelle,Guy Durinck,Johan Hofkens,Geert Deconinck,Peter Hanselaer +6 more
TL;DR: In this paper, the adding-doubling tool is presented, which allows fast predictions of the influence of LDS sheets on solar cell performance and is validated by comparing its predictions to experimental data.
Journal ArticleDOI
Effects of harvest time, fruit size and cultivar on the bulk optical properties of Satsuma mandarin
TL;DR: In this article, the authors investigated the variation in the bulk optical properties (BOP) of the inner (juice vesicles) and outer (flavedo) tissue layer of Satsuma mandarin.
Proceedings ArticleDOI
3D printed biomimetic vascular phantoms for assessment of hyperspectral imaging systems
Jianting Wang,Jianting Wang,Pejhman Ghassemi,Anthony J. Melchiorri,Jessica C. Ramella-Roman,Scott A. Mathews,James C. Coburn,Brian S. Sorg,Yu Chen,T. Joshua Pfefer +9 more
TL;DR: 3D printed phantoms are useful for assessing biophotonic system performance and have the potential to form the basis of clinically-relevant standardized test methods for assessment of medical imaging modalities.
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.