US 12,067,743 B2
Automated license plate recognition system and related method
Louis-Antoine Blais-Morin, Montréal (CA); Pablo Agustin Cassani, Montréal (CA); and André Bleau, Dollard-des-Ormeaux (CA)
Filed by GENETEC INC., St-Laurent (CA)
Filed on Oct. 28, 2021, as Appl. No. 17/512,870.
Application 17/512,870 is a continuation of application No. 16/987,022, filed on Aug. 6, 2020, granted, now 11,188,776.
Claims priority of provisional application 62/926,462, filed on Oct. 26, 2019.
Prior Publication US 2022/0051042 A1, Feb. 17, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. G06T 7/70 (2017.01); G06T 7/00 (2017.01); G06V 10/44 (2022.01); G06V 10/75 (2022.01); G06V 20/62 (2022.01); G06V 30/12 (2022.01); G06V 30/14 (2022.01); G08G 1/133 (2006.01); G06V 30/10 (2022.01)
CPC G06T 7/70 (2017.01) [G06T 7/97 (2017.01); G06V 10/44 (2022.01); G06V 10/751 (2022.01); G06V 20/62 (2022.01); G06V 20/625 (2022.01); G06V 30/133 (2022.01); G06V 30/1444 (2022.01); G08G 1/133 (2013.01); G06V 30/10 (2022.01)] 17 Claims
OG exemplary drawing
 
1. An automated license plate recognition system comprising:
at least one camera unit comprising:
a first image acquisition device for acquiring at least a first image of a license plate; and
a second image acquisition device for acquiring at least a second image of the license plate;
the system further comprising:
at least one processing unit; and
at least one non-transitory computer-readable memory having stored thereon program instructions executable by the at least one processing unit for:
obtaining the first image and the second image of the license plate;
determining a three-dimensional position of the license plate relative to the at least one camera unit based on stereoscopic image processing of the first image and the second image, wherein determining the three-dimensional position of the license plate comprises:
identifying pixel coordinates of the license plate in the first image and the second image for locating the license plate in the first image and the second image; and
determining a difference of the pixel coordinates of the license plate in the first image and the second image; and
determining the three-dimensional position of the license plate based on the difference of the pixel coordinates and configuration information of the first image acquisition device and the second image acquisition device.