US 12,229,996 B2
Systems and methods for camera calibration via dual-mode mats
Charles Burton Swope, Coral Springs, FL (US); Matthew B. Hayes, Wheaton, IL (US); and Andrea Mirabile, London (GB)
Assigned to Zebra Technologies Corporation, Lincolnshire, IL (US)
Filed by ZEBRA TECHNOLOGIES CORPORATION, Lincolnshire, IL (US)
Filed on Nov. 30, 2022, as Appl. No. 18/072,534.
Prior Publication US 2024/0177345 A1, May 30, 2024
Int. Cl. G06T 7/80 (2017.01); G06Q 20/20 (2012.01); H04N 23/56 (2023.01); H04N 23/66 (2023.01); H04N 23/90 (2023.01)
CPC G06T 7/80 (2017.01) [G06Q 20/203 (2013.01); H04N 23/56 (2023.01); H04N 23/66 (2023.01); H04N 23/90 (2023.01)] 22 Claims
OG exemplary drawing
 
1. A system for calibrating a camera, comprising
a mat;
a camera having first heading data and a field of view featuring the mat; and
a controller coupled to the mat, and the camera, the controller being configured to perform a calibration routine to calibrate the camera comprising:
controlling the mat to energize one or more light emitting diodes (LEDs) to generate an illumination pattern,
receiving image data captured by the camera that features the illumination pattern,
deriving second heading data based on a relative position of the camera and the mat and a relative position of the illumination pattern within the image data; and
setting the first heading data of the camera to the second heading data,
wherein to determine the relative position of the illumination pattern within the image data, the controller is configured to:
identify a center pixel of the camera; and
determine a position of the illumination pattern with respect to the center pixel of the camera.