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Quantitative 3D imaging of scattering media using structured illumination and computed tomography

Kristensson, Elias LU ; Berrocal, Edouard LU and Aldén, Marcus LU (2012) In Optics Express 20(13). p.14437-14450
Abstract
An imaging technique capable of measuring the extinction coefficient in 3D is presented and demonstrated on various scattering media. The approach is able to suppress unwanted effects due to both multiple scattering and light extinction, which, in turbid situations, seriously hampers the performance of conventional imaging techniques. The main concept consists in illuminating the sample of interest with a light source that is spatially modulated in both the vertical and horizontal direction and to measure, using Structured Illumination, the correct transmission in 2D at several viewing angles. The sample is then reconstructed in 3D by means of a standard Computed Tomography algorithm. To create the adequate illumination, a novel "crossed"... (More)
An imaging technique capable of measuring the extinction coefficient in 3D is presented and demonstrated on various scattering media. The approach is able to suppress unwanted effects due to both multiple scattering and light extinction, which, in turbid situations, seriously hampers the performance of conventional imaging techniques. The main concept consists in illuminating the sample of interest with a light source that is spatially modulated in both the vertical and horizontal direction and to measure, using Structured Illumination, the correct transmission in 2D at several viewing angles. The sample is then reconstructed in 3D by means of a standard Computed Tomography algorithm. To create the adequate illumination, a novel "crossed" structured illumination approach is implemented. In this article, the accuracy and limitation of the method is first evaluated by probing several homogeneous milk solutions at various levels of turbidity. The unique possibility of visualizing an object hidden within such solutions is also demonstrated. Finally the method is applied on two different inhomogeneous scattering spray systems; one transient and one quasi-steady state. (C) 2012 Optical Society of America (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Optics Express
volume
20
issue
13
pages
14437 - 14450
publisher
OSA
external identifiers
  • wos:000305473000081
  • scopus:84863754801
ISSN
1094-4087
language
English
LU publication?
yes
id
dd017863-fbc9-442c-bf86-5980e5cb18a4 (old id 2873576)
date added to LUP
2012-07-24 15:46:28
date last changed
2017-05-21 04:12:31
@article{dd017863-fbc9-442c-bf86-5980e5cb18a4,
  abstract     = {An imaging technique capable of measuring the extinction coefficient in 3D is presented and demonstrated on various scattering media. The approach is able to suppress unwanted effects due to both multiple scattering and light extinction, which, in turbid situations, seriously hampers the performance of conventional imaging techniques. The main concept consists in illuminating the sample of interest with a light source that is spatially modulated in both the vertical and horizontal direction and to measure, using Structured Illumination, the correct transmission in 2D at several viewing angles. The sample is then reconstructed in 3D by means of a standard Computed Tomography algorithm. To create the adequate illumination, a novel "crossed" structured illumination approach is implemented. In this article, the accuracy and limitation of the method is first evaluated by probing several homogeneous milk solutions at various levels of turbidity. The unique possibility of visualizing an object hidden within such solutions is also demonstrated. Finally the method is applied on two different inhomogeneous scattering spray systems; one transient and one quasi-steady state. (C) 2012 Optical Society of America},
  author       = {Kristensson, Elias and Berrocal, Edouard and Aldén, Marcus},
  issn         = {1094-4087},
  language     = {eng},
  number       = {13},
  pages        = {14437--14450},
  publisher    = {OSA},
  series       = {Optics Express},
  title        = {Quantitative 3D imaging of scattering media using structured illumination and computed tomography},
  volume       = {20},
  year         = {2012},
}