公开(公告)号：US20220036587A1

公开(公告)日：2022-02-03

申请号：US17502387

申请日：2021-10-15

申请人： Sensetime Group Limited

发明人： Zheng MA ,  Rui HUANG ,  Guohang YAN ,  Jianping SHI

IPC分类号： G06T7/80 ,  G01B11/00 ,  G01C11/04

摘要： A calibration method, an electronic device, and a storage medium are provided. The calibration method includes the following. A sample image is acquired with an image acquisition device. Initial pixel coordinates of multiple sample reference objects in the sample image in an image coordinate system are determined based on the sample image. Straight-line fitting is performed on sample reference objects on a same straight line based on the determined initial pixel coordinates of the sample reference objects in the image coordinate system, and the initial pixel coordinates of the sample reference objects involved in straight-line fitting are corrected based on fitted straight lines to obtain corrected pixel coordinates. A homography matrix of the image acquisition device is determined based on world coordinates of the multiple sample reference objects in the sample image in a world coordinate system and the obtained corrected pixel coordinates.

公开(公告)号：US20220057231A1

公开(公告)日：2022-02-24

申请号：US17521308

申请日：2021-11-08

申请人： SENSETIME GROUP LIMITED

发明人： Zheng MA ,  Zeyu WANG ,  Lei DU ,  Chunxiao LIU ,  Jianping SHI

IPC分类号： G01C21/00 ,  G01C21/36

摘要： Embodiments of the present description provide methods and apparatuses for detecting map calibration errors. In one aspect, a method includes: acquiring a map including at least one map element, determining at least one of feature information of the at least one map element or a navigation line according to the map, and determining whether a map element is calibrated wrongly according to the at least one of the feature information or the navigation line.