公开(公告)号：US11367215B2

公开(公告)日：2022-06-21

申请号：US17057915

申请日：2019-05-29

Applicant: SOUTHEAST UNIVERSITY

Inventor： Xu Li ,  Jiwen Cao ,  Peizhou Ni ,  Kun Wei

IPC: G06T7/70 ,  G06T7/73 ,  B60R11/04 ,  B62D15/02 ,  G06K9/62 ,  G06T5/00 ,  G06V10/25 ,  B60R11/00 ,  G06V20/62 ,  G06V30/10

Abstract: The present invention discloses a positive azimuth towing guidance method for road rescue equipment based on license plate corner features. The method combines a structure of the road rescue equipment and characteristics of a positive azimuth towing operation. First, an image of an operation area is collected by installing a camera, and grayscale processing and Gaussian smooth filtering are performed on the image; corner detection is performed on the smoothed grayscale image, and preference is implemented according to corner strengths; hierarchical clustering is performed on the preferred corners; an effective corner set of license plate characters is sorted out to implement license plate locating; and then towing guidance is implemented according to a license plate locating result, to improve the rescue efficiency of the road rescue equipment. The guidance method provided in the present invention has good real-time performance, environmental adaptability and anti-interference ability, thereby effectively improving the rescue efficiency of the road rescue equipment.