We propose a special imaging technique as a low-cost solution to profile hidden surfaces through scattering media. The method exploits the asymmetry property of a pair of identical laser beams in propagation through the scattering medium, where scanning the pointing of the paired laser beams allows for a collection of target samples to reconstruct the surface shape of a hidden object. In application, our new method provides alternative solutions to many real-world problems, such as medical imaging, optical communication, environmental sensing, and underwater surveillance that require dealing with a scattering environment that often obscures direct sight of a target area.

© 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

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2019 (3)

2018 (2)

2017 (2)

2016 (1)

2015 (1)

2014 (1)

2011 (1)

2004 (1)

2002 (1)

1972 (1)

Aden-Ali, I.

Alayed, M.

Alem, N.

Arnush, D.

Bauer, P. L.

Borycki, D.

Brady, P. C.

Brun, G. L.

Carrizo, C.

Choi, W.

Clemente, P.

Cummings, M. E.

Deen, M. J.

Funatomi, T.

Gilerson, A. A.

Gu, Y.

Heide, F.

Heidrich, W.

Hovenier, J. W.

Hullin, M. B.

Ibrahim, A. I.

Jauregui-Sánchez, Y.

Jeong, S.

Jeune, B. L.

Jose, J.

Kattawar, G. W.

Kholiqov, O.

Kim, D.-Y.

Kolb, A.

Lancis, J.

Lee, Y.-R.

Li, H.

Li, Y.

Liu, Q.

Lu, H.

Mackowski, D. W.

Malberg, H.

Manohar, S.

McCormick, N. J.

Mishchenko, M. I.

Mukaigawa, Y.

Muraji, T.

Naser, M. A.

Pellen, F.

Piras, D.

Rasche, S.

Resink, S.

Sanchez, R.

Slump, C. H.

Srinivasan, V. J.

Steenbergen, W.

Sullivan, J. M.

Sun, Y.

Tajahuerce, E.

Tanaka, K.

Tong, S.

Trumpp, A.

Twardowski, M. S.

van Hespen, J. C. G.

van Leeuwen, T. G.

Willemink, R. G. H.

Xiao, L.

Yuan, L.

Zaunseder, S.

Appl. Opt. (3)

Biomed. Opt. Express (1)

J. Opt. Soc. Am. (1)

J. Opt. Soc. Am. A (1)

Opt. Express (5)

Opt. Lett. (3)

Supplementary Material (2)

» Visualization 1       This is a visualization for Fig. 3 in the submitted manuscript to Optics Letters.
» Visualization 2       This is a visualization for Fig. 6 in the submitted manuscript to Optics Letters.

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Figures (8)

Fig. 1.
Fig. 1. Illustration of deriving the differential term in Eq. (2).
Fig. 2.
Fig. 2. System setup and diagram for experimental validations.
Fig. 3.
Fig. 3. Sampled camera image of the pair of the probing lasers (see Visualization 1)
Fig. 4.
Fig. 4. Illustration of using the less affected areas for the asymmetry algorithm.
Fig. 5.
Fig. 5. Experimental results on extracting the relative surface tilts.
Fig. 6.
Fig. 6. Sampled camera images of (a) the pair of the probing lasers on a target that has surface jumps (see Visualization 2), and (b) imaging result with the the bright green LED array as an illumination source.
Fig. 7.
Fig. 7. (a) Experimental setup to compare imaging effects between the two beam illumination and the bright LED array illumination; (b) External view of the scattering media with the occluded target; (c) Side view of the two beam projections onto the target’s surface.
Fig. 8.
Fig. 8. Surface profile reconstruction result in revealing the well-cutout along the horizontal scanning direction.

Tables (1)

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Table 1. Error Statistics for the Tested Small Surface Tilts

Equations (3)

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h ( r , z ) = e x p ( s z r 2 w 0 2 ) I r r 0 + g π R 2 e x p ( s z r 2 R 2 ) .
Δ h ( r , z ) = l θ g π R 2 z ( 3 s z + 3 r 2 R 2 ) e x p ( s z r 2 R 2 ) I r > r 0 .
r 0 2 π r Δ h ( r , z ) d r = l d θ g π 2 R 2 z ( 6 R 2 + 3 r 0 2 s z R 2 ) e x p ( r 0 2 R 2 ) l d θ g π 2 R 4 z ( 6 τ ) .