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High-contrast imaging through scattering media using structured illumination and Fourier filtering

Berrocal, Edouard LU ; Pettersson, Sven Göran LU and Kristensson, Elias LU (2016) In Optics Letters 41(23). p.5612-5615
Abstract

We show in this Letter a novel approach for high-contrast imaging through scattering media by combining structured illumination and Fourier filtering (SIF). To assess the image contrast enhancement at different image spatial frequencies, the modulation transfer function is calculated for four detection schemes: (1) no filtering, (2) Fourier filtering, (3) structured illumination, and (4) SIF filtering. A scattering solution consisting of D = 7.3 μm polystyrene spheres immersed in distilled water and illuminated at λ = 671 nm is used here. We demonstrate the possibility of obtaining, with SIF, an image contrast up to 60% at an optical depth of OD = 10, improving the contrast by a factor of 40 over conventional transmission imaging.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Optics Letters
volume
41
issue
23
pages
4 pages
publisher
Optical Society of America
external identifiers
  • scopus:85005943472
  • wos:000389654000051
ISSN
0146-9592
DOI
10.1364/OL.41.005612
language
English
LU publication?
yes
id
af880f03-4874-4e35-8732-0995187a6c2e
date added to LUP
2016-12-30 07:44:34
date last changed
2017-11-19 04:36:18
@article{af880f03-4874-4e35-8732-0995187a6c2e,
  abstract     = {<p>We show in this Letter a novel approach for high-contrast imaging through scattering media by combining structured illumination and Fourier filtering (SIF). To assess the image contrast enhancement at different image spatial frequencies, the modulation transfer function is calculated for four detection schemes: (1) no filtering, (2) Fourier filtering, (3) structured illumination, and (4) SIF filtering. A scattering solution consisting of D = 7.3 μm polystyrene spheres immersed in distilled water and illuminated at λ = 671 nm is used here. We demonstrate the possibility of obtaining, with SIF, an image contrast up to 60% at an optical depth of OD = 10, improving the contrast by a factor of 40 over conventional transmission imaging.</p>},
  author       = {Berrocal, Edouard and Pettersson, Sven Göran and Kristensson, Elias},
  issn         = {0146-9592},
  language     = {eng},
  month        = {12},
  number       = {23},
  pages        = {5612--5615},
  publisher    = {Optical Society of America},
  series       = {Optics Letters},
  title        = {High-contrast imaging through scattering media using structured illumination and Fourier filtering},
  url          = {http://dx.doi.org/10.1364/OL.41.005612},
  volume       = {41},
  year         = {2016},
}