Array of pinholes is used for a lensless 3D imaging. Technique is promising for applications where imaging/monitoring of bright and dynamic events is required

Array of pinholes is used for a lensless 3D imaging. Technique is promising for applications where imaging/monitoring of bright and dynamic events is required

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物質理工学院 Saulius Juodkazis特任教授の国際共著論文

“Single shot multispectral multidimensional imaging using chaotic waves”

が、Scientific Reports  に掲載されました。(DOI: 10.1038/s41598-020-70849-7

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<Abstract>

Multispectral imaging technology is a valuable scientific tool for various applications in astronomy, remote sensing, molecular fingerprinting, and fluorescence imaging. In this study, we demonstrate a single camera shot, lensless, interferenceless, motionless, non-scanning, space, spectrum, and time resolved five-dimensional incoherent imaging technique using tailored chaotic waves with quasi-random intensity and phase distributions. Chaotic waves can distinctly encode spatial and spectral information of an object in single self-interference intensity distribution. In this study, a tailored chaotic wave with a nearly pure phase function and lowest correlation noise is generated using a quasi-random array of pinholes. A unique sequence of signal processing techniques is applied to extract all possible spatial and spectral channels with the least entropy. The depth-wavelength reciprocity is exploited to see colour from depth and depth from colour and the physics of beam propagation is exploited to see at one depth by calibrating at another.