公开(公告)号：US20240046502A1

公开(公告)日：2024-02-08

申请号：US18258884

申请日：2021-08-31

Applicant: Hitachi Astemo, Ltd.

Inventor： Morihiko SAKANO ,  Hideyuki KUME ,  Hidehiro TOYODA

IPC: G06T7/70 ,  G01C21/28

CPC classification number: G06T7/70 ,  G01C21/28

Abstract: Provided are a self-map generation device and a self-position estimation device with which it is possible to achieve high-accuracy self-position estimation even when an observation error due to a sensor is large by estimating an error amount of a landmark serving as an observation point and improving the quality of a self-generated point group map. This self-map generation device generates a point group map from point group data of external information obtained by a vehicle-mounted sensor mounted in a vehicle, and comprises: a landmark detection unit that detects a landmark from the point group map; a landmark information accumulation unit that accumulates observation position information of the detected landmark; a landmark position correction unit that corrects the position of the landmark on the basis of point group coordinates extracted from an error distribution detected when the observation position information of the landmark has been frequency-distributed; and a self-map generation unit that saves, as a self-generated map, a corrected map obtained by correcting the position of the landmark and obtained from the landmark position correction unit.