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Coded Aperture Correlation Holography

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From the observation of stars to microbes, advancements in digital holography could bring wide-scale improvements to imaging technology.

VIJAYAKUMAR ANAND, SWINBURNE UNIVERSITY OF TECHNOLOGY, AND JOSEPH ROSEN, BEN-GURION UNIVERSITY OF THE NEGEV

Coded aperture correlation holography (COACH) is a recently developed 3D-imaging technology. It began as a regular in-line, two-beam interference holography and has evolved into an interferenceless technique based on a working principle entirely different from techniques of conventional holography. A system is calibrated using a one-time “COACHing” procedure, which records the point spread function (PSF) library along the depth. Then, an object is placed within the calibrated object space and one or more intensity patterns are recorded. The various planes of an object are...Read full article

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