Patents by Inventor Joy Weng Zhang

Joy Weng 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).

  • Updating road graphs for autonomous driving
    Patent number: 11853070
    Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for updating data of a map. One of the methods includes storing a map of an environment, the map comprising surfels and a road graph; receiving new surfel data for the surfels; adjusting the surfels based on the new surfel data; determining a vector field difference between the surfels of the stored map and the adjusted surfels; adjusting a portion of the road graph based on the vector field difference; generating an updated map comprising the adjusted surfels and the adjusted portion of the road graph; and storing the updated map.
    Type: Grant
    Filed: September 4, 2020
    Date of Patent: December 26, 2023
    Assignee: Waymo LLC
    Inventors: Michael Montemerlo, Peter Michal Pawlowski, Joy Weng Zhang
  • UPDATING ROAD GRAPHS FOR AUTONOMOUS DRIVING
    Publication number: 20220075382
    Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for updating data of a map. One of the methods includes storing a map of an environment, the map comprising surfels and a road graph; receiving new surfel data for the surfels; adjusting the surfels based on the new surfel data; determining a vector field difference between the surfels of the stored map and the adjusted surfels; adjusting a portion of the road graph based on the vector field difference; generating an updated map comprising the adjusted surfels and the adjusted portion of the road graph; and storing the updated map.
    Type: Application
    Filed: September 4, 2020
    Publication date: March 10, 2022
    Inventors: Michael Montemerlo, Peter Michal Pawlowski, Joy Weng Zhang