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:
May. 23, 2023
Filed:
Oct. 08, 2020
Applicant:
Hitachi, Ltd., Tokyo, JP;
Inventors:
Yuki Watanabe, San Jose, CA (US);
Ravigopal Vennelakanti, San Jose, CA (US);
Assignee:
HITACHI, LTD., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G06K 9/62 (2022.01); G06F 18/22 (2023.01); G06V 40/16 (2022.01); G06V 10/75 (2022.01);
U.S. Cl.
CPC ...
G06F 18/22 (2023.01); G06V 10/7515 (2022.01); G06V 40/169 (2022.01); G06V 40/172 (2022.01);
Abstract
In example implementations described herein, person images obtained by object detection and tracking are stored in an image database. Then the system automatically samples a person image as a query of image search for past images. Filtering is performed on the search results to extract a person images having a similarity higher than certain threshold. Travel time is calculated by sorting information (camera identifier, time) attached to person images on a timeline, and the system detects gap between periods that the person appears in frame.