公开(公告)号：US20250131740A1

公开(公告)日：2025-04-24

申请号：US18382189

申请日：2023-10-20

Applicant: GOOGLE LLC

Inventor： Dan Lingenfelter ,  Stephen Russell

IPC: G06V20/56 ,  G06V10/75

Abstract: To detect a change in lane marker geometry, a computing device receives map patch data from one or more vehicles within a geographic area indicative of measured lane marker positions. For each data point within the map patch data, the computing device determines an error metric based on one or more differences between one or more measured lane marker positions for the data point and one or more reference lane marker positions from a database. The computing device identifies relationships between the data points according to the error metric for each data point, a time when each data point was collected, or a location of each data point, and identifies a lane marker change event occurring within the geographic area based on the relationships between the data points. Then the computing device discards reference lane marker positions from the database corresponding to the lane marker change event.