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Random scattering of images and visibility enhancement via stochastic resonance

机译：随机共振随机散射图像和可见性增强

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摘要

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. instability; stochastic resonance; random scattering; self-focusing nonlinearity.
机译：我们通过强度和动量空间在数字上调查二维（2-D）图像的随机散射和通过随机共振的可见性增强。多次散射破坏了光子的直接传输，但是携带图像信息的一些弹道光子仍然穿透散射介质。底层的弹道图像信号表现出不稳定性，并且以自聚焦非线性下的散射噪声的牺牲增强，这被描述为随机共振。发现弹性信号与散射噪声的较高比率触发更强的不稳定性。讨论了可见性增强在不同散射条件下的影响，并且设计了2-D Quasiplicle运动模型来分析非线性动态演化。我们的结果为嘈杂的图像检测提供了潜在的指导。不稳定;随机共振;随机散射;自我聚焦的非线性。

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  • 来源
    《Optical engineering》 |2019年第4期|046105.1-046105.8|共8页
  • 作者

    Yongbin Zhang; Hongjun Liu; Nan Huang; Zhaolu Wang;

  • 作者单位

    Chinese Academy of Sciences Xi'an Institute of Optics and Precision Mechanics State Key Laboratory of Transient Optics and Photonics Xi'an China University of Chinese Academy of Sciences Beijing China;

    Chinese Academy of Sciences Xi'an Institute of Optics and Precision Mechanics State Key Laboratory of Transient Optics and Photonics Xi'an China Shanxi University Collaborative Innovation Center of Extreme Optics Taiyuan China;

    Chinese Academy of Sciences Xi'an Institute of Optics and Precision Mechanics State Key Laboratory of Transient Optics and Photonics Xi'an China;

    Chinese Academy of Sciences Xi'an Institute of Optics and Precision Mechanics State Key Laboratory of Transient Optics and Photonics Xi'an China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
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