US 12,131,492 B2
Calibration parameter obtaining method and apparatus, processor, and electronic device
Li Yu, Zhejiang (CN); Lei Yuan, Zhejiang (CN); Wang Miao, Zhejiang (CN); and Jin Wang, Zhejiang (CN)
Assigned to ARCSOFT CORPORATION LIMITED, Zhejiang (CN)
Appl. No. 17/631,475
Filed by ARCSOFT CORPORATION LIMITED, Zhejiang (CN)
PCT Filed Jul. 16, 2020, PCT No. PCT/CN2020/102491
§ 371(c)(1), (2) Date Jan. 30, 2022,
PCT Pub. No. WO2021/022989, PCT Pub. Date Feb. 11, 2021.
Claims priority of application No. 201910727431.0 (CN), filed on Aug. 7, 2019.
Prior Publication US 2022/0277468 A1, Sep. 1, 2022
Int. Cl. G06K 9/00 (2022.01); A61K 35/12 (2015.01); G06T 7/55 (2017.01); G06T 7/80 (2017.01); H04N 1/387 (2006.01); H04N 9/31 (2006.01)
CPC G06T 7/55 (2017.01) [G06T 7/80 (2017.01); H04N 1/387 (2013.01); H04N 9/3185 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A calibration parameter obtaining method, comprising: capturing a calibration image in a calibration scene by using a plurality of image collection cameras to obtain a plurality of images; obtaining point sets from the plurality of images, wherein the point sets are imaging points corresponding to three-dimensional points on the surface of the calibration image in the plurality of images; and obtaining calibration parameters to be used of the plurality of image collection cameras according to the point sets;
wherein the plurality of image collection cameras are three cameras, the three cameras are located in the same module, and this module is arranged at a fixed distance in front of the calibration image, and
the calibration image comprises a plurality of calibration templates, and each of the calibration templates consists of a plurality of checkerboards comprising round dots;
wherein one of the calibration templates is taken as a reference template, and the other calibration templates are placed at a predetermined included angle to the reference template in different directions respectively.