公开(公告)号：US11920948B2

公开(公告)日：2024-03-05

申请号：US17185682

申请日：2021-02-25

Applicant: DENSO CORPORATION

Inventor： Genki Kitahara

IPC: G01C21/00 ,  B60W60/00

CPC classification number: G01C21/3811 ,  B60W60/001 ,  G01C21/3815 ,  B60W2420/42 ,  B60W2420/52 ,  B60W2556/50

Abstract: A method for generating or updating map data including coordinate information of a plurality of landmarks disposed along a road, includes: by a vehicle-side device, uploading index information, indicating that the map data needs to be updated to the server in associated with a road segment in which the vehicle is traveling when a predetermined event occurs in a situation where the vehicle is traveling; by the server, determining whether the map data for the road segment needs to be updated based on the index information provided by the vehicle-side device; and by a server, setting an update flag indicating that the map data needs to be updated for the road segment when determining that the map data needs to be updated.

公开(公告)号：US11821750B2

公开(公告)日：2023-11-21

申请号：US17185686

申请日：2021-02-25

Applicant: DENSO CORPORATION

Inventor： Genki Kitahara ,  Yusuke Matsumoto ,  Shigehiro Muto ,  Takayuki Watanabe

IPC: G01C21/00 ,  B60W60/00

CPC classification number: G01C21/3848 ,  B60W60/001 ,  G01C21/3815

Abstract: A map generation system provides to: acquire an image of the vehicle's environment from the imaging device; analyze the image to calculate the position of a feature on the road; upload map information including the position of the feature to a server; and statistically determines the coordinates of individual features in the uploaded map information. The features include a reference mark whose absolute coordinates are determined. The coordinates of the features other than the reference mark are corrected so as to match the observation coordinates of the reference mark corresponding to the absolute coordinates of the reference mark.