Patents by Inventor Wai-Ming Peter TSANG

Wai-Ming Peter TSANG has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20230360385
    Abstract: A computer-implemented method and a system for object identification and/or classification. The computer-implemented method includes receiving digital hologram data of a digital hologram of an object. The digital hologram data comprises phase information and magnitude information. The computer-implemented method further includes processing the digital hologram data based on a neural-network-based ensemble model to identify and/or classify the object.
    Type: Application
    Filed: February 17, 2023
    Publication date: November 9, 2023
    Inventors: Ho Sang Lam, Wai Ming Peter Tsang
  • Patent number: 10663923
    Abstract: System and methods for efficiently generating a high quality patterned-phase-only hologram that can be displayed on a single device. A digital image of a holographed subject is measured as a distribution of the intensity of pixels in the image, or as an intensity image, and uniformly partitioned into a plurality of non-overlapping image blocks. A phase mask is applied to each pixel in each image block and assigned a value in the range of [0,2?). The pixels are modulated with a phase value corresponding to the value applied by the phase mask, creating a modified intensity image. A complex hologram is generated from the modified intensity image. The complex hologram is generated utilizing a fast hologram generation process and then converted into a patterned-phase-only hologram. A short sequence of the patterned-phase holograms can be displayed to enhance the visual quality of the displayed holographic images.
    Type: Grant
    Filed: September 9, 2016
    Date of Patent: May 26, 2020
    Assignee: City University of Hong Kong
    Inventors: Wai Ming Peter Tsang, Yuk Tak Chow
  • Patent number: 10317674
    Abstract: The present disclosure describes Augmented Reality (AR) methods and systems allowing one or more user to observe a virtual image (e.g., computer generated image) overlaid on a physical scene (e.g., actual real life surroundings). Embodiments herein allow components of the AR methods and systems to be decoupled from each other, such that a user is able to view a virtual image overlaid on a physical scene while simply wearing thin, lightweight holographic spectacles.
    Type: Grant
    Filed: January 31, 2017
    Date of Patent: June 11, 2019
    Assignee: City University of Hong Kong
    Inventor: Wai Ming Peter Tsang
  • Publication number: 20180217375
    Abstract: The present disclosure describes Augmented Reality (AR) methods and systems allowing one or more user to observe a virtual image (e.g., computer generated image) overlaid on a physical scene (e.g., actual real life surroundings). Embodiments herein allow components of the AR methods and systems to be decoupled from each other, such that a user is able to view a virtual image overlaid on a physical scene while simply wearing thin, lightweight holographic spectacles.
    Type: Application
    Filed: January 31, 2017
    Publication date: August 2, 2018
    Inventor: Wai Ming Peter Tsang
  • Publication number: 20180074458
    Abstract: System and methods for efficiently generating a high quality patterned-phase-only hologram that can be displayed on a single device are disclosed. A digital image of a holographed subject is measured as a distribution of the intensity of pixels in the image, or as an intensity image, and uniformly partitioned into a plurality of non-overlapping image blocks. A phase mask is applied to each pixel in each image block and assigned a value in the range of [0,2?). The pixels are modulated with a phase value corresponding to the value applied by the phase mask, creating a modified intensity image. A complex hologram is generated from the modified intensity image. The complex hologram is generated utilizing a fast hologram generation process and then converted into a patterned-phase-only hologram. A short sequence of the patterned-phase holograms can be displayed to enhance the visual quality of the displayed holographic images.
    Type: Application
    Filed: September 9, 2016
    Publication date: March 15, 2018
    Inventors: Wai Ming Peter Tsang, Yuk Tak Chow
  • Patent number: 9305398
    Abstract: A trajectory is drawn on a digital canvas with a pointing device, wherein the trajectory comprises a plurality of spaced points, and each spaced point has a plurality of characteristics, including a geometric profile, a depth, and a color if a color trajectory or an intensity if a monochromatic trajectory. One or more of the plurality of characteristics is adjusted by manually controlling a speed of the drawing, and a faster drawing speed results in spacing between two successive points that is greater than that resulting from a slower speed. A line is generated by interpolating the space between the points. A picture is created with a number of trajectories and/or lines. A three-dimensional image may be created from the picture by creating, then integrating a set of multi-view images from the picture. The picture in progress and/or as completed may be displayed, for example, on a three-dimensional display.
    Type: Grant
    Filed: October 8, 2010
    Date of Patent: April 5, 2016
    Assignee: CITY UNIVERSITY OF HONG KONG
    Inventor: Wai-Ming Peter Tsang
  • Publication number: 20120086705
    Abstract: A trajectory is drawn on a digital canvas with a pointing device, wherein the trajectory comprises a plurality of spaced points, and each spaced point has a plurality of characteristics, including a geometric profile, a depth, and a color if a color trajectory or an intensity if a monochromatic trajectory. One or more of the plurality of characteristics is adjusted by manually controlling a speed of the drawing, and a faster drawing speed results in spacing between two successive points that is greater than that resulting from a slower speed. A line is generated by interpolating the space between the points. A picture is created with a number of trajectories and/or lines. A three-dimensional image may be created from the picture by creating, then integrating a set of multi-view images from the picture. The picture in progress and/or as completed may be displayed, for example, on a three-dimensional display.
    Type: Application
    Filed: October 8, 2010
    Publication date: April 12, 2012
    Applicant: City University of Hong Kong
    Inventor: Wai-Ming Peter TSANG