US 12,256,061 B2
Calibration verification method for camera intrinsic parameter and apparatus, device, and medium
Xi Sun, Beijing (CN); and Hengkai Guo, Beijing (CN)
Assigned to Beijing Zitiao Network Technology Co., Ltd., Beijing (CN)
Appl. No. 18/560,030
Filed by Beijing Zitiao Network Technology Co., Ltd., Beijing (CN)
PCT Filed Apr. 24, 2022, PCT No. PCT/CN2022/088716
§ 371(c)(1), (2) Date Nov. 9, 2023,
PCT Pub. No. WO2022/252873, PCT Pub. Date Dec. 8, 2022.
Claims priority of application No. 202110600932.X (CN), filed on May 31, 2021.
Prior Publication US 2024/0259549 A1, Aug. 1, 2024
Int. Cl. H04N 17/00 (2006.01); G06T 7/80 (2017.01)
CPC H04N 17/002 (2013.01) [G06T 7/80 (2017.01); G06T 2207/10016 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A calibration verification method for a camera intrinsic parameter, comprising:
obtaining a plurality of reference images captured by a target camera with a plurality of reference world coordinates under a preset photographing condition, wherein the camera intrinsic parameter of the target camera is calibrated;
determining a first coordinate change parameter corresponding to the plurality of reference world coordinates based on the preset photographing condition, and determining a second coordinate change parameter of the plurality of reference images based on a preset algorithm;
judging whether the second coordinate change parameter is consistent with the first coordinate change parameter; and
feeding back a verification message indicating successful calibration of the camera intrinsic parameter if the second coordinate change parameter is consistent with the first coordinate change parameter.