The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 15, 2023
Filed:
May. 15, 2020
Baidu Usa Llc, Sunnyvale, CA (US);
Baidu.com Times Technology (Beijing) Co., Ltd., Beijing, CN;
Xiang Liu, Beijing, CN;
Shuang Zhang, Beijing, CN;
Bin Gao, Beijing, CN;
Dongchao Gao, Beijing, CN;
Fan Zhu, Beijing, CN;
BAIDU USA LLC, Sunnyvale, CA (US);
BAIDU.COM TIMES TECHNOLOGY (BEIJING) CO., LTD, Beijing, CN;
Abstract
A method, apparatus, and system for determining whether all extrinsic matrices are accurate is disclosed. A plurality of post-LIDAR fusion point clouds that are based on simultaneous outputs from a plurality of LIDAR devices installed at one ADV are obtained. The obtained plurality of point clouds are filtered to obtain a first set of points comprising all points in the plurality of point clouds that fall within a region of interest. Each point in the first set of points corresponds to one coordinate value on the axis in the up-down direction. A distribution of the first plurality of coordinate values is obtained. A quantity of peaks in the distribution of the first plurality of coordinate values is determined. Whether all extrinsic matrices associated with the plurality of LIDAR devices are accurate is determined based on the quantity of peaks in the distribution of the first plurality of coordinate values.