Random scattering of images and visibility enhancement via stochastic resonance

Yongbin Zhang; Hongjun Liu; Nan Huang; Zhaolu Wang

doi:10.1117/1.OE.58.4.046105

9 April 2019 Random scattering of images and visibility enhancement via stochastic resonance

Yongbin Zhang, Hongjun Liu, Nan Huang, Zhaolu Wang

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Optical Engineering, Vol. 58, Issue 4, 046105 (April 2019). https://doi.org/10.1117/1.OE.58.4.046105

Abstract

We investigate numerically the random scattering of two-dimensional (2-D) images and the visibility enhancement via stochastic resonance both in intensity and momentum spaces. The multiple scattering destroys the direct transmission of photons, but some ballistic photons carrying the image information still penetrate the scattering media. The underlying ballistic image signals exhibit an instability and are enhanced at the expense of scattering noise under self-focusing nonlinearity, which is described as a stochastic resonance. It is found that the higher ratio of ballistic signals to scattering noise triggers a stronger instability. The effect of visibility enhancement in different scattering conditions is discussed, and the 2-D quasiparticle motion model is designed to analyze the nonlinear dynamic evolution. Our results provide potential guidance for noisy image detection.

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Yongbin Zhang, Hongjun Liu, Nan Huang, and Zhaolu Wang "Random scattering of images and visibility enhancement via stochastic resonance," Optical Engineering 58(4), 046105 (9 April 2019). https://doi.org/10.1117/1.OE.58.4.046105

Received: 29 December 2018; Accepted: 21 March 2019; Published: 9 April 2019

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KEYWORDS

Scattering

Visibility

Resonance enhancement

Photons

Interference (communication)

Stochastic processes

Light scattering

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