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Holographic Camera Peers Through Fog, Around Corners

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EVANSTON, Ill., Dec. 28, 2021 — A high-resolution camera that can capture images around corners and through scattering media, such as skin, fog, and potentially the human skull, combines high temporal resolution, a small probing area, and a large angular field of view into a single device. A team of researchers at Northwestern University has introduced the device, which uses a holographic method and reconstructive algorithm to reveal hidden objects. Called synthetic wavelength holography, the method indirectly scatters coherent light onto hidden objects, which then scatters again and travels back to a camera. From...Read full article

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    Vision-Spectra.com
    Dec 2021
    GLOSSARY
    holography
    The optical recording of the object wave formed by the resulting interference pattern of two mutually coherent component light beams. In the holographic process, a coherent beam first is split into two component beams, one of which irradiates the object, the second of which irradiates a recording medium. The diffraction or scattering of the first wave by the object forms the object wave that proceeds to and interferes with the second coherent beam, or reference wave at the medium. The resulting...
    Research & TechnologyimagingNLoSnon-line-of-sightaround cornerscamerasNorthwestern Universityindustrial inspectionholographyholographichigh resolutionNature CommunicationsAmericas

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