Patents by Inventor Ping-Cheng Chi

Ping-Cheng Chi 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).

  • 3D positioning apparatus and method
    Patent number: 8866888
    Abstract: A 3D positioning apparatus is used for an object that includes feature points and a reference point. The object undergoes movement from a first to a second position. The 3D positioning apparatus includes: an image sensor for capturing images of the object; and a processor for calculating, based on the captured images, initial coordinates of each feature point when the object is in the first position, initial coordinates of the reference point, final coordinates of the reference point when the object is in the second position, and final coordinates of each feature point. The processor calculates 3D translational information of the feature points using the initial and final coordinates of the reference point, and 3D rotational information of the feature points using the initial and final coordinates of each feature point. A 3D positioning method is also disclosed.
    Type: Grant
    Filed: December 29, 2009
    Date of Patent: October 21, 2014
    Assignee: National Taiwan University
    Inventors: Homer H. Chen, Ping-Cheng Chi
  • 3D Positioning Apparatus and Method
    Publication number: 20100309289
    Abstract: A 3D positioning apparatus is used for an object that includes feature points and a reference point. The object undergoes movement from a first to a second position. The 3D positioning apparatus includes: an image sensor for capturing images of the object; and a processor for calculating, based on the captured images, initial coordinates of each feature point when the object is in the first position, initial coordinates of the reference point, final coordinates of the reference point when the object is in the second position, and final coordinates of each feature point. The processor calculates 3D translational information of the feature points using the initial and final coordinates of the reference point, and 3D rotational information of the feature points using the initial and final coordinates of each feature point. A 3D positioning method is also disclosed.
    Type: Application
    Filed: December 29, 2009
    Publication date: December 9, 2010
    Applicant: National Taiwan University
    Inventors: Homer H. Chen, Ping-Cheng Chi