Patents by Inventor Bing-Yi Wong

Bing-Yi Wong 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).

  • Photometric calibration method and device
    Patent number: 8406563
    Abstract: A photometric calibration method includes: obtaining a target image and a reference image by a light field camera and transforming the reference image into a revised target image corresponding to the target image; calculating a photometric calibration ratio according to a function for correlating the target image and the revised target image by using a numerical algorithm; and the intensity of the target image is divided by the photometric calibration ratio to obtain a calibrated target image. A light field of a scene is formed by all of the calibrated target image so as to improve the quality of the light field.
    Type: Grant
    Filed: July 28, 2009
    Date of Patent: March 26, 2013
    Assignee: National Taiwan University
    Inventors: Chia-Kai Liang, Homer H. Chen, Bing-Yi Wong, Gene Liu
  • Method of realism assessment of an image composite
    Patent number: 8373721
    Abstract: In a method of realism assessment of an image composite, the foreground and the background are transformed into a color space, such as YCbCr, followed by projecting the foreground and the background to a subspace represented by the axes representing chromatic information. The image composite is assessed in the projected subspace, according to linearity of color distributions of the foreground/the background, or according to distance between the color distributions of the foreground/the background and a center of the transformed color space.
    Type: Grant
    Filed: December 14, 2009
    Date of Patent: February 12, 2013
    Assignee: National Taiwan University
    Inventors: Bing-Yi Wong, Homer H. Chen, Chia-Kai Liang, Tai-Hsu Lin
  • METHOD OF REALISM ASSESSMENT OF AN IMAGE COMPOSITE
    Publication number: 20110141353
    Abstract: In a method of realism assessment of an image composite, the foreground and the background are transformed into a color space, such as YCbCr, followed by projecting the foreground and the background to a subspace represented by the axes representing chromatic information. The image composite is assessed in the projected subspace, according to linearity of color distributions of the foreground/the background, or according to distance between the color distributions of the foreground/the background and a center of the transformed color space.
    Type: Application
    Filed: December 14, 2009
    Publication date: June 16, 2011
    Applicant: National Taiwan University
    Inventors: BING-YI WONG, Homer H. CHEN, CHIA-KAI LIANG, TAI-HSU LIN
  • PHOTOMETRIC CALIBRATION METHOD AND DEVICE
    Publication number: 20110026910
    Abstract: A photometric calibration method includes: obtaining a target image and a reference image by a light field camera and transforming the reference image into a revised target image corresponding to the target image; calculating a photometric calibration ratio according to a function for correlating the target image and the revised target image by using a numerical algorithm; and the intensity of the target image is divided by the photometric calibration ratio to obtain a calibrated target image. A light field of a scene is formed by all of the calibrated target image so as to improve the quality of the light field.
    Type: Application
    Filed: July 28, 2009
    Publication date: February 3, 2011
    Applicant: NATIONAL TAIWAN UNIVERSITY
    Inventors: Chia-Kai Liang, Homer H. Chen, Bing-Yi Wong, Gene Liu