US 12,008,823 B2
Image recognizer and image recognition method
Ukyo Tanikawa, Nisshin (JP); Shunsuke Nakano, Kariya (JP); Takuya Nomura, Kariya (JP); and Yasushi Suehisa, Kariya (JP)
Assigned to DENSO CORPORATION, Kariya (JP)
Filed by DENSO CORPORATION, Kariya (JP)
Filed on May 28, 2021, as Appl. No. 17/333,460.
Claims priority of application No. 2020-096060 (JP), filed on Jun. 2, 2020.
Prior Publication US 2021/0374434 A1, Dec. 2, 2021
Int. Cl. G06V 20/64 (2022.01); G06V 10/25 (2022.01); G06V 20/56 (2022.01); G06V 20/58 (2022.01)
CPC G06V 20/647 (2022.01) [G06V 10/25 (2022.01); G06V 20/582 (2022.01); G06V 20/584 (2022.01); G06V 20/588 (2022.01); G06V 20/64 (2022.01)] 5 Claims
OG exemplary drawing
 
1. An image recognition system for calculating a degree by which a traffic signal faces an own vehicle comprising:
a traffic signal detector configured to detect the traffic signal based on an image of a region in front of the own vehicle captured from the own vehicle;
a calculator configured to calculate a degree by which a front of the traffic signal faces the own vehicle, based on the image; and
a traffic signal identifier configured to identify a traffic signal applicable to the own vehicle based on the degree,
wherein
the calculator calculates the degree by which the front of the traffic signal faces the own vehicle based on:
measuring a first length of an illuminated portion of the traffic signal along a major axis of the illuminated portion;
measuring a second length of the illuminated portion along a minor axis of the illuminated portion;
determining a ratio of the second length versus the first length; and
wherein
the degree by which the front of the traffic signal faces the own vehicle increases the closer the ratio is to a ratio of 1:1.