US 11,967,112 B2
Method and apparatus for detecting calibration requirement for image sensors in vehicles
Xinlu Tang, Saratoga, CA (US); Chi Yan, Saratoga, CA (US); Jiangwei Li, Saratoga, CA (US); and Jie Lin, Saratoga, CA (US)
Assigned to AitronX Inc., Saratoga, CA (US)
Filed by AitronX Inc., Saratoga, CA (US)
Filed on Sep. 7, 2022, as Appl. No. 17/939,701.
Prior Publication US 2024/0078706 A1, Mar. 7, 2024
Int. Cl. G06T 7/80 (2017.01); G06T 7/20 (2017.01); G06V 20/56 (2022.01)
CPC G06T 7/80 (2017.01) [G06T 7/20 (2013.01); G06V 20/588 (2022.01); G06T 2207/30256 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for detecting a calibration requirement for at least one image sensor, comprising:
detecting a ground pattern in a generated image associated with a surrounding view of a vehicle;
extracting at least one key point associated with the detected ground pattern, from the generated image;
determining a relative motion parameter associated with the extracted at least one key point based on tracking of the extracted at least one key point over a period of time, further comprising:
detecting a first location of the at least one key point at a first-time instance in the period of time;
detecting a second location of the at least one key point at a second time instance in the period of time;
generating a line extending between the first location and the second location; and
determining the relative motion parameter associated with the extracted at least one key point based on an orientation of the generated line with respect to the vehicle's body;
detecting calibration requirement for the image sensor based on the determined relative motion parameter; and
generating an output signal based on the detected calibration requirement.