US 11,682,225 B2
Image processing to detect a rectangular object
Jason Pribble, McLean, VA (US); Nicholas Capurso, Tysons Corner, VA (US); and Daniel Alan Jarvis, Alexandria, VA (US)
Assigned to Capital One Services, LLC, McLean, VA (US)
Filed by Capital One Services, LLC, McLean, VA (US)
Filed on Aug. 22, 2022, as Appl. No. 17/821,243.
Application 17/821,243 is a continuation of application No. 17/249,624, filed on Mar. 8, 2021, granted, now 11,423,633.
Application 17/249,624 is a continuation of application No. 16/443,038, filed on Jun. 17, 2019, granted, now 10,943,140, issued on Mar. 9, 2021.
Application 16/443,038 is a continuation of application No. 16/165,794, filed on Oct. 19, 2018, granted, now 10,331,966, issued on Jun. 25, 2019.
Prior Publication US 2022/0392184 A1, Dec. 8, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. G06K 9/00 (2022.01); G06V 30/414 (2022.01); G06V 10/20 (2022.01); G06V 10/25 (2022.01); G06V 10/24 (2022.01)
CPC G06V 30/414 (2022.01) [G06V 10/20 (2022.01); G06V 10/25 (2022.01); G06V 10/247 (2022.01)] 20 Claims
OG exemplary drawing
 
1. A method, comprising:
detecting, by a device and using at least one computer-implemented edge detection technique, a set of edges associated with an image of an object;
identifying, by the device and based on the set of edges, a bounding rectangle that bounds a representation of the object depicted in the image;
identifying, by the device, a set of edge candidate lines;
identifying, by the device, a set of intersection points where lines, included in the set of edge candidate lines, intersect with one another;
performing, by the device, a corner test on the set of intersection points to identify one or more points, of the set of intersection points, that are a threshold distance from corners of the bounding rectangle;
removing, by the device, the one or more points from the set of intersection points to generate a set of corner candidate points; and
identifying, by the device, corner points, included in the set of corner candidate points, that are closest, respectively, to the corners of the bounding rectangle.