Patents by Inventor Xun Chai

Xun Chai 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).

  • Database construction method, positioning method, and related device
    Patent number: 11644339
    Abstract: A database construction method includes determining a target image set that meets a preset image coincidence degree requirement, obtaining a scenario key point information set based on the target image set and natural condition information corresponding to each image, determining, in the scenario key point information set, first scenario key point information corresponding to a scenario key point whose life value on a single mobile terminal is greater than a first preset life value threshold, determining, in the first scenario key point information, second scenario key point information corresponding to a scenario key point whose life value on a plurality of mobile terminals is greater than a second preset life value threshold, and when the second scenario key point information does not match preset scenario key point information in a database, constructing the database based on the second scenario key point information.
    Type: Grant
    Filed: December 18, 2020
    Date of Patent: May 9, 2023
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Xun Chai, Jun Wang, Jingwei Zhou, Jiong Deng
  • Database Construction Method, Positioning Method, and Related Device
    Publication number: 20210103759
    Abstract: A database construction method includes determining a target image set that meets a preset image coincidence degree requirement, obtaining a scenario key point information set based on the target image set and natural condition information corresponding to each image, determining, in the scenario key point information set, first scenario key point information corresponding to a scenario key point whose life value on a single mobile terminal is greater than a first preset life value threshold, determining, in the first scenario key point information, second scenario key point information corresponding to a scenario key point whose life value on a plurality of mobile terminals is greater than a second preset life value threshold, and when the second scenario key point information does not match preset scenario key point information in a database, constructing the database based on the second scenario key point information.
    Type: Application
    Filed: December 18, 2020
    Publication date: April 8, 2021
    Inventors: Xun Chai, Jun Wang, Jingwei Zhou, Jiong Deng