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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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    Published: December 2021
    Glossary
    holography
    Holography is a technique used to capture and reconstruct three-dimensional images using the principles of interference and diffraction of light. Unlike conventional photography, which records only the intensity of light, holography records both the intensity and phase information of light waves scattered from an object. This allows the faithful reproduction of the object's three-dimensional structure, including its depth, shape, and texture. The process of holography typically involves the...
    Research & TechnologyImagingNLoSnon-line-of-sightaround cornerscamerasNorthwestern Universityindustrial inspectionholographyholographichigh resolutionNature CommunicationsAmericas

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