Patents by Inventor Junqian Zhang

Junqian 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).

  • Methods for correcting and encrypting space coordinates of three-dimensional model
    Patent number: 11887254
    Abstract: A method for correcting space coordinates of a three-dimensional model includes: step S1, reading information of an original coordinate frame of a three-dimensional model in a first format and the origin of coordinates of the model; reading information of nodes from three-dimensional model data in the first format, and calculating original coordinates of the nodes; step S2, calculating parameters of correction between the original coordinate frame and a target coordinate frame; step S3, transforming and correcting the coordinates of the origin and nodes of the three-dimensional model in the first format one by one by using the space coordinate correction matrix to obtain information of coordinate points of the three-dimensional model in the second format; and step S4, storing a file of the three-dimensional model in the second format with corrected space coordinates. Also, a method for encrypting space coordinates of a three-dimensional model is provided.
    Type: Grant
    Filed: February 4, 2021
    Date of Patent: January 30, 2024
    Assignee: CHONGQING SURVEY INSTITUTE
    Inventors: Zejun Xiang, Zhiyong Zhou, Yan Zhang, Liangchao Chen, Kaiquan Hu, Hong Ma, Junqian Zhang
  • Methods for Correcting and Encrypting Space Coordinates of Three-Dimensional Model
    Publication number: 20220414982
    Abstract: The present disclosure provides a method for correcting and encrypting space coordinates of a three-dimensional model.
    Type: Application
    Filed: February 4, 2021
    Publication date: December 29, 2022
    Applicant: CHONGQING SURVEY INSTITUTE
    Inventors: Zejun Xiang, Zhiyong Zhou, Yan Zhang, Liangchao Chen, Kaiquan Hu, Hong MA, Junqian Zhang