Fast generation of pure phase digital holograms
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United States of America Patent
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Jan 10, 2017
Grant Date -
May 14, 2015
app pub date -
Nov 11, 2013
filing date -
Nov 11, 2013
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Abstract
Fast processing of information represented in digital holograms is provided to facilitate generating a phase-only hologram for displaying 3-D holographic images representative of a 3-D object scene on a display device. A holographic generator component (HGC) can receive or generate visual images, comprising depth and parallax information, of a 3-D object scene. A hologram processor component can downsample an intensity image of a visual image of the 3-D object scene using a uniform or random lattice to facilitate converting the intensity image to a sparse image. The hologram processor component can generate a complex 3-D Fresnel hologram, comprising the depth and parallax information, based on the sparse image using a fast hologram generation algorithm. The hologram processor component modify the magnitude of the pixels of the complex hologram to a defined homogeneous value to facilitate converting the complex hologram to a phase-only hologram.
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