Layered optical tomography of multiple scattering media with combined constraint optimization

2015 ◽  
Author(s):  
Bingzhi Yuan ◽  
Toru Tamaki ◽  
Takahiro Kushida ◽  
Bisser Raytchev ◽  
Kazufumi Kanedal ◽  
...  
Keyword(s):  
Multiple Scattering ◽  
Optical Tomography ◽  
Constraint Optimization ◽  
Scattering Media

Determination of optical properties of multiple-scattering media by using a coherent-modulated source

1997 ◽  
Vol 28 (5) ◽  
pp. 218-224 ◽  
Author(s):  
X Intes ◽  
B Le Jeune ◽  
F Pellen ◽  
Y Guern ◽  
J Cariou ◽  
...  
Keyword(s):  
Optical Properties ◽  
Multiple Scattering ◽  
Scattering Media

Spatial resolution and scanning time in the optical tomography of absorbing 'phantoms' under multiple scattering conditions

2000 ◽  
Vol 30 (1) ◽  
pp. 78-80 ◽  
Author(s):  
E V Malikov ◽  
V M Petnikova ◽  
D A Chursin ◽  
Vladimir V Shuvalov ◽  
I V Shutov
Keyword(s):  
Multiple Scattering ◽  
Spatial Resolution ◽  
Optical Tomography ◽  
Scanning Time

Optical Tomography With a Least Square Finite Element Formulation of the Collimated Irradiation in Frequency Domain

2010 ◽  
Author(s):  
Olivier Balima ◽  
Joan Boulanger ◽  
Andre´ Charette ◽  
Daniel Marceau
Keyword(s):  
Finite Element ◽  
Optical Properties ◽  
Frequency Domain ◽  
Complex Geometry ◽  
Numerical Study ◽  
Optical Tomography ◽  
Least Square ◽  
Finite Element Formulation ◽  
Element Formulation ◽  
Scattering Media

This paper presents a numerical study of optical tomography in frequency domain for the reconstruction of optical properties of scattering and absorbing media with collimated irradiation light sources. The forward model is a least square finite element formulation of the collimated irradiation problem where the intensity is separated into its collimated and scattered parts. This model does not use any empirical stabilization and moreover the collimated source direction is taken into account. The inversion uses a gradient type minimization method where the gradient is computed through an adjoint formulation. Scaling is used to avoid numerical round errors, as the output readings at detectors are very low. Numerical reconstructions of optical properties of absorbing and scattering media with simulated data (noised and noise-free) are achieved in a complex geometry with satisfactory results. The results show that complex geometries are well handled with the proposed method.

Average crossing parameter and forward scattering ratio values in four-flux model for multiple scattering media

2001 ◽  
Vol 194 (4-6) ◽  
pp. 251-263 ◽  
Author(s):  
Claude Rozé ◽  
Thierry Girasole ◽  
Gérard Gréhan ◽  
Gérard Gouesbet ◽  
Bruno Maheu
Keyword(s):  
Multiple Scattering ◽  
Forward Scattering ◽  
Scattering Media ◽  
Flux Model ◽  
Scattering Ratio
Sign in / Sign up

Export Citation Format

Share Document