Patents by Inventor Ouyu Wang

Ouyu Wang 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).

  • Patent number: 11543530
    Abstract: Disclosed is an indoor SLAM method based on three-dimension (3D) lidar and ultra-wide band (UWB). Firstly, a UWB positioning system is deployed in an indoor area, then a robot carrying 3D lidar sensors explores the indoor area, and finally, a SLAM algorithm integrating lidar data and UWB data is used to generate a map of the explored area. The method specifically includes the following steps: determining a relative pose transformation between the 3D laser SLAM coordinate system and the UWB positioning coordinate system; using UWB data to provide initial value for inter-frame matching of laser odometer; using UWB data to add constraints to SLAM back-end pose graph; and performing loop detection based on curvature feature coding. This application breaks through the limitation of lighting conditions of indoor areas, eliminates the accumulated errors of SLAM, and constructs a high-quality indoor map.
    Type: Grant
    Filed: May 27, 2022
    Date of Patent: January 3, 2023
    Assignee: Guangdong University of Technology
    Inventors: Jianqi Liu, Ouyu Wang