Patents by Inventor Lilian ZHANG

Lilian ZHANG 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).

  • Pure pose solution method and system for multi-view camera pose and scene
    Patent number: 12094162
    Abstract: A pure pose solution method and system for a multi-view camera pose and scene are provided. The method includes: a pure rotation recognition (PRR) step: performing PRR on all views, and marking views having a pure rotation abnormality, to obtain marked views and non-marked views; a global translation linear (GTL) calculation step: selecting one of the non-marked views as a reference view, constructing a constraint tr=0, constructing a GTL constraint, solving a global translation (I), reconstructing a global translation of the marked views according to tr and (I), and screening out a correct solution of the global translation; and a structure analytical reconstruction (SAR) step: performing analytical reconstruction on coordinates of all 3D points according to a correct solution of a global pose. The method and system can greatly improve the computational efficiency and robustness of the multi-view camera pose and scene structure reconstruction.
    Type: Grant
    Filed: December 31, 2019
    Date of Patent: September 17, 2024
    Assignee: SHANGHAI JIAO TONG UNIVERSITY
    Inventors: Yuanxin Wu, Qi Cai, Lilian Zhang
  • PURE POSE SOLUTION METHOD AND SYSTEM FOR MULTI-VIEW CAMERA POSE AND SCENE
    Publication number: 20230041433
    Abstract: A pure pose solution method and system for a multi-view camera pose and scene are provided. The method includes: a pure rotation recognition (PRR) step: performing PRR on all views, and marking views having a pure rotation abnormality, to obtain marked views and non-marked views; a global translation linear (GTL) calculation step: selecting one of the non-marked views as a reference view, constructing a constraint tr=0, constructing a GTL constraint, solving a global translation (I), reconstructing a global translation of the marked views according to tr and (I), and screening out a correct solution of the global translation; and a structure analytical reconstruction (SAR) step: performing analytical reconstruction on coordinates of all 3D points according to a correct solution of a global pose. The method and system can greatly improve the computational efficiency and robustness of the multi-view camera pose and scene structure reconstruction.
    Type: Application
    Filed: December 31, 2019
    Publication date: February 9, 2023
    Applicant: SHANGHAI JIAO TONG UNIVERSITY
    Inventors: Yuanxin WU, Qi CAI, Lilian ZHANG