US Patent No. 9,323,218

GENERATING FULL-PARALLAX DIGITAL HOLOGRAMS


Patent No. 9,323,218
Issue Date April 26, 2016
Title Generating Full-parallax Digital Holograms
Inventorship Peter Wai Ming Tsang, Kowloon (HK)
Assignee CITY UNIVERSITY OF HONG KONG, Kowloon (HK)

Claim of US Patent No. 9,323,218

1. A system, comprising:
at least one memory that stores computer executable components; and
at least one processor that facilitates execution of the computer executable components stored in the at least one memory,
the computer executable components, comprising:

a holographic generator component that generates an intermediate object wavefront recording plane on a virtual diffraction
plane from a downsampled three-dimensional object scene, wherein the intermediate object wavefront recording plane is within
a defined distance of the downsampled three-dimensional object scene; and

a hologram enhancer component that expands the intermediate object wavefront recording plane to generate a three-dimensional
hologram representative of a three-dimensional object scene associated with the downsampled three-dimensional object scene,

wherein the hologram enhancer component generates respective square supports on the downsampled three-dimensional object scene
that surround, and are larger in size than, respective sampled object points of the downsampled three-dimensional object scene
and replaces the respective sampled object points with respective image blocks on the intermediate object wavefront recording
plane and records respective wavefront patterns of the respective image blocks on the intermediate object wavefront recording
plane,

wherein the respective image blocks correspond in size to the respective square supports of the respective sampled object
points,

wherein the respective square supports comprise a first square support that surrounds a first sampled object point of the
respective sampled object points and a second square support that surrounds a second sampled object point of the respective
sampled object points, and a first side of the first square support adjoins a second side of the second square support that
is adjacent to the first square support,

wherein the respective image blocks are larger in size than respective regions of the respective sampled object points that
would be on the intermediate object wavefront recording plane had the respective sampled object points not been replaced with
the respective image blocks, and

wherein the respective sampled object points cast respective windows of object waves on the virtual diffraction plane.