Patents by Inventor Teng-Feng Liao

Teng-Feng Liao 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).

  • Geometric camera calibration system and method
    Patent number: 10755441
    Abstract: A geometric camera calibration system includes an extrinsic iterative closest point (ICP) device that generates an estimated extrinsic matrix by adjusting an initial extrinsic matrix according to first 3D points in camera coordinates; and an intrinsic ICP device that receives 3D points in chessboard coordinates and accordingly generates an error metric between the 3D points in chessboard coordinates and predetermined second reference 3D points. The extrinsic ICP device performs ICP operation to minimize difference between the 3D points in camera coordinates and predetermined first reference 3D points. A current intrinsic matrix is then outputted as an updated intrinsic matrix if a current error metric is not greater than a previous error metric.
    Type: Grant
    Filed: November 18, 2019
    Date of Patent: August 25, 2020
    Assignees: NCKU Research and Development Foundation, Himax Technologies Limited
    Inventors: Ming-Der Shieh, Chun-Wei Chen, Teng-Feng Liao, Yu-Cheng Chen