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Acousto-optic imaging of a color picture hidden behind a scattering layer

Leung, TS; Jiang, S; (2013) Acousto-optic imaging of a color picture hidden behind a scattering layer. Optics Express , 21 (22) 26780 - 26785. 10.1364/OE.21.026780. Green open access

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Abstract

An imaging technique has been developed to image a color picture hidden behind a 5 mm thick, highly scattering layer with low transmittance of 0.24%. Small vibrations (< 1 µm) were induced in the hidden picture, causing a time-varying speckle pattern on the scattering layer in the front, which is captured by a CCD camera and quantified as speckle contrast difference (SCD). With two lasers at 543 nm and 633 nm, the imaging system raster-scans the front of the scattering layer and the resulting SCD image reveals the color features of the hidden picture.

Type: Article
Title: Acousto-optic imaging of a color picture hidden behind a scattering layer
Open access status: An open access version is available from UCL Discovery
DOI: 10.1364/OE.21.026780
Publisher version: http://dx.doi.org/10.1364/OE.21.026780
Language: English
Additional information: Copyright © 2013 Optical Society of America. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modifications of the content of this paper are prohibited.
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Med Phys and Biomedical Eng
URI: https://discovery.ucl.ac.uk/id/eprint/1417720
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