Statistical characteristics of the transmitted radiation in scattering media with a highly anisotropic scattering intensity

1973 ◽  
Vol 16 (2) ◽  
pp. 236-238 ◽  
Author(s):  
B. V. Goryachev ◽  
B. N. Denchik ◽  
B. A. Savel'ev
Keyword(s):  
Anisotropic Scattering ◽  
Statistical Characteristics ◽  
Scattering Media ◽  
Transmitted Radiation ◽  
Scattering Intensity

QUANTITATIVE MUELLER MATRIX POLARIMETRY TECHNIQUES FOR BIOLOGICAL TISSUES

2012 ◽  
Vol 05 (03) ◽  
pp. 1250017 ◽  
Author(s):  
HONGHUI HE ◽  
NAN ZENG ◽  
DONGZHI LI ◽  
RAN LIAO ◽  
HUI MA
Keyword(s):  
Early Stage ◽  
Structural Characteristics ◽  
Potential Method ◽  
Biological Tissues ◽  
Anisotropic Scattering ◽  
Mueller Matrix ◽  
Matrix Transformation ◽  
Scattering Media ◽  
Tissue Samples ◽  
The Media

We propose and conduct both the rotating linear polarization imaging (RLPI) and Mueller matrix transformation (MMT) measurements of different biological tissue samples, and testify the capability of the Mueller matrix polarimetry for the anisotropic scattering media. The independent parameters extracted from the RLPI and MMT techniques are compared and analyzed. The tissue experimental results show that the parameters are closely related to the structural characteristics of the turbid scattering media, including the sizes of the scatterers, the angular distribution and order of alignment of the fibers. The results and conclusions in this paper may provide a potential method for the detection of precancerous and early stage cancerous tissues. Also, such studies represent the Mueller matrix transformation procedure which results in a set of parameters linking up the Mueller matrix elements to the structural and optical properties of the media.

A New Phase Function Normalization Approach for Radiative Transfer Analysis in Highly Anisotropic Scattering Media

2011 ◽  
Author(s):  
Brian Hunter ◽  
Zhixiong Guo
Keyword(s):  
Phase Function ◽  
Solid Angle ◽  
Scaling Law ◽  
Anisotropic Scattering ◽  
Convergence Time ◽  
Extreme Condition ◽  
Asymmetry Factor ◽  
Scattering Media ◽  
Scattered Energy ◽  
New Phase

A new phase function normalization approach is applied to both the DOM and FVM for predicting radiative heat transfer in an extreme condition — highly anisotropic scattering media. Previous attempts to normalize the DOM result in a distortion of the overall phase function asymmetry factor. The splitting of each solid angle into numerous sub-angles in the FVM is shown to also produce a lack of conservation of asymmetry factor, even though scattered energy is conserved. The current normalization technique is crafted such that scattered energy and asymmetry factor are accurately conserved after both DOM and FVM discretization. The change in scattering effect when asymmetry factor is not conserved is examined for both methods. Wall flux profiles generated by DOM with old and new normalization techniques as well as FVM with and without phase function normalization are compared to isotropic scaling law profiles to gauge the accuracy of the techniques. The effects of changes in both optical thickness and scattering albedo are investigated. It is found that the current normalization approach vastly improves accuracy of flux profiles. The current procedure also greatly decreases FVM convergence time by eliminating the need for large amounts of solid angle splitting.

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