公开(公告)号：US20230266141A1

公开(公告)日：2023-08-24

申请号：US18306719

申请日：2023-04-25

Applicant: Huawei Technologies Co., Ltd.

Inventor： Dawei Liu ,  Feng Shi

IPC: G01C21/00 ,  G01C21/34

CPC classification number: G01C21/3819 ,  G01C21/3415

Abstract: A method for automatically marking a U-turn lane line includes: obtaining information about an intersection entry point, information about an intersection exit point, and information about an obstacle at a to-be-marked intersection; and marking a U-turn lane line with a first depth. The first depth is determined based on a second depth of the obstacle. The first depth of the U-turn lane line is determined based on the second depth of the obstacle, so that a marked U-turn lane line does not collide with the obstacle, to mark a more proper U-turn lane line.

公开(公告)号：US11454513B2

公开(公告)日：2022-09-27

申请号：US16861997

申请日：2020-04-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Feng Shi ,  Jun Wang ,  Jingwei Zhou

IPC: G01C21/36

Abstract: This application provides a method and an apparatus for generating road network data of an intersection area, and the intersection area connects a plurality of roads. The method includes: obtaining data of a road link of each of the plurality of roads, where the road link includes an entry link and an exit link; calculating coordinates of an intersection point of an extension line of the entry link of each road and an extension line of an exit link of a neighboring road based on the data of the road link of each of the plurality of roads, where the coordinates of the intersection point are coordinates of an intersection node; and the neighboring road is a road counterclockwise adjacent to the road; or the neighboring road is a road clockwise adjacent to the road, where two intersection nodes in sequence are endpoints of an intra-intersection link.