Non-invasive imaging of object behind strongly scattering media via cross-spectrum
arXiv (Cornell University)(2020)
Abstract
We develop a method based on the cross-spectrum of an intensity-modulated CW laser, which can extract a signal from an extremely noisy environment and image objects hidden in turbid media. We theoretically analyzed our scheme and performed the experiment by scanning the object placed in between two ground glass diffusers. The image of the object is retrieved by collecting the amplitudes at the modulation frequency of all the cross-spectra. Our method is non-invasive, easy-to-implement, and can work for both static and dynamic media.
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Key words
scattering,imaging,non-invasive,cross-spectrum
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