US 11,729,371 B2
Systems and methods for improved camera color calibration
Christopher N. St. John, Northville, MI (US); Koji L. Gardiner, San Francisco, CA (US); Ravi Babu Basavaraj, Sunnyvale, CA (US); and Bowei Zhang, Fremont, CA (US)
Assigned to Ford Global Technologies, LLC, Dearborn, MI (US)
Filed by FORD GLOBAL TECHNOLOGIES, LLC, Dearborn, MI (US)
Filed on Oct. 14, 2020, as Appl. No. 17/70,038.
Prior Publication US 2022/0116584 A1, Apr. 14, 2022
Int. Cl. H04N 17/00 (2006.01); G06T 7/80 (2017.01); H04N 1/60 (2006.01); H04N 17/02 (2006.01); G06V 20/58 (2022.01); G06V 10/56 (2022.01); H04N 9/64 (2023.01); H04N 9/67 (2023.01); G06T 7/90 (2017.01)
CPC H04N 17/002 (2013.01) [G06T 7/80 (2017.01); G06T 7/90 (2017.01); G06V 10/56 (2022.01); G06V 20/584 (2022.01); H04N 1/6027 (2013.01); H04N 9/646 (2013.01); H04N 9/67 (2013.01); H04N 17/02 (2013.01); G06T 2207/10016 (2013.01); G06T 2207/10024 (2013.01); G06T 2207/30252 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method comprising:
capturing a first wavelength emitted by a first type of traffic light and a second wavelength emitted by a second type of traffic light;
identifying, based on the first wavelength, a first color value associated with the wavelength emitted by the first type of traffic light;
identifying, based on the second wavelength, a third color value associated with the wavelength emitted by the second type of traffic light;
capturing, by a first camera, a first image, video, or real-time feed of a first portion of a test target, the first portion of the test target including a first light color that is based on the first color value and a third light color that is based on the third color value;
identifying, based on the first image, video, or real-time feed of the first portion of a test target, a second color value and a fourth color value output by the camera;
detecting, based on a comparison between the first color value and the second color value, that a difference exists between the first color value and the second color value; and
adjusting, based on the difference between the first color value and the second color value and a difference between the third color value and the fourth color value, at least one of: a property of the camera or signal processing associated with the camera.