公开(公告)号：US20210207963A1

公开(公告)日：2021-07-08

申请号：US17207543

申请日：2021-03-19

Applicant: BEIJING BAIDU NETCOM SCIENCE AND TECHNOLOGY CO., LTD.

Inventor： Jinzhu Lin

IPC: G01C21/32 ,  G01C21/34

Abstract: A method includes acquiring data of vehicle trajectories within a predetermined area, the predetermined area including an area near and on both sides of a boundary between two adjacent areas; matching the data of the vehicle trajectories with map data within the predetermined area to obtain a matching road network; determining a plurality of intersection points between the road network and the boundary, and dividing the plurality of intersection points into at least one group, a distance between any two intersection points in a first group of the at least one group being less than a preset value; and determining a specific position of a first traffic checkpoint in the first group based on a number of the vehicle trajectories each of the passing intersection points in the first group of the at least one group.