Patents by Inventor Yao-Sheng Shu

Yao-Sheng Shu 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).

  • Method for simultaneous hue phase-shifting and system for 3-D surface profilometry using the same
    Patent number: 8411284
    Abstract: The present invention provides a method for simultaneous hue phase-shifting and a system for 3-D surface profilometry, wherein a single structured-light fringe pattern with encoded multiple trapezoidal color fringes is projected on an object so as to obtain a color image having deformed fringe patterns and then a hue information extracted from a HSI color model associated with the fringe pattern is transformed into a hue phase-shifting information for restructuring the 3-D surface profile of the object. Since the color structured light is composed of a plurality of colorful light having phase shifts with each other in spatial domain, the single structured-light pattern comprises multiple hue phase-shifting information so that the phase shifting and unwrapping can be performed by one-shot 3-D surface reconstruction process without needs of traditional conventional phase wrapping and Euler's transformation procedures such that the efficiency of phase shifting and 3-D surface measurement can be improved.
    Type: Grant
    Filed: July 30, 2009
    Date of Patent: April 2, 2013
    Assignee: National Taipei University of Technology
    Inventors: Liang-Chia Chen, Yao-Sheng Shu
  • METHOD FOR SIMULTANEOUS HUE PHASE-SHIFTING AND SYSTEM FOR 3-D SURFACE PROFILOMETRY USING THE SAME
    Publication number: 20100188400
    Abstract: The present invention provides a method for simultaneous hue phase-shifting and a system for 3-D surface profilometry, wherein a single structured-light fringe pattern with encoded multiple trapezoidal color fringes is projected on an object so as to obtain a color image having deformed fringe patterns and then a hue information extracted from a HSI color model associated with the fringe pattern is transformed into a hue phase-shifting information for restructuring the 3-D surface profile of the object. Since the color structured light is composed of a plurality of colorful light having phase shifts with each other in spatial domain, the single structured-light pattern comprises multiple hue phase-shifting information so that the phase shifting and unwrapping can be performed by one-shot 3-D surface reconstruction process without needs of traditional conventional phase wrapping and Euler's transformation procedures such that the efficiency of phase shifting and 3-D surface measurement can be improved.
    Type: Application
    Filed: July 30, 2009
    Publication date: July 29, 2010
    Applicant: National Taipei University of Technology
    Inventors: Liang-Chia Chen, Yao-Sheng Shu