	US 12,236,620 B2
	Three-dimensional reconstruction method and apparatus
Jiale Shang, Shandong (CN); Bin Jiang, Shandong (CN); and Xiaoyu Chi, Shandong (CN)
Assigned to GOERTEK INC., Shandong (CN)
Appl. No. 18/004,847
Filed by GOERTEK INC., Shandong (CN)
PCT Filed Nov. 7, 2020, PCT No. PCT/CN2020/127362 § 371(c)(1), (2) Date Jan. 9, 2023, PCT Pub. No. WO2022/011898, PCT Pub. Date Jan. 20, 2022.
Claims priority of application No. 202010692404.7 (CN), filed on Jul. 17, 2020.
Prior Publication US 2023/0306619 A1, Sep. 28, 2023
Int. Cl. G06T 7/33 (2017.01); G06T 7/246 (2017.01); G06T 7/50 (2017.01); G06T 19/20 (2011.01)

CPC G06T 7/33 (2017.01) [G06T 7/246 (2017.01); G06T 7/50 (2017.01); G06T 19/20 (2013.01); G06T 2207/10016 (2013.01); G06T 2207/20072 (2013.01)]

14 Claims

1. A three-dimensional reconstruction method, comprising:

performing sliding calculation on an acquired current image frame according to a preset window size to obtain to-be-processed windows;

performing point feature extraction and line feature extraction on the to-be-processed windows, and determining corresponding features in each to-be-processed window;

performing iterative quadtree splitting for circles on each target to-be-processed window to obtain circular regions of interest corresponding to each target to-be-processed window;

performing feature screening on features in the target circular regions of interest to obtain target features corresponding to each target circular region of interest; and

performing three-dimensional reconstruction corresponding to the current image frame by using the target features.