US 11,989,917 B2
Line stripe mismatch detection and three-dimensional reconstruction method and device
Jian Zhang, Zhejiang (CN)
Assigned to Shining 3D Tech Co., Ltd., Zhejiang (CN)
Appl. No. 17/426,124
Filed by Shining 3D Tech Co., Ltd., Zhejiang (CN)
PCT Filed Feb. 3, 2020, PCT No. PCT/CN2020/074224
§ 371(c)(1), (2) Date Jul. 28, 2021,
PCT Pub. No. WO2020/156578, PCT Pub. Date Aug. 6, 2020.
Claims priority of application No. 201910101224.4 (CN), filed on Jan. 31, 2019.
Prior Publication US 2022/0101559 A1, Mar. 31, 2022
Int. Cl. G06T 7/00 (2017.01); G06F 18/22 (2023.01); G06T 7/521 (2017.01); G06V 10/75 (2022.01); H04N 23/90 (2023.01)
CPC G06T 7/97 (2017.01) [G06F 18/22 (2023.01); G06T 7/521 (2017.01); G06V 10/75 (2022.01); H04N 23/90 (2023.01); G06T 2207/20228 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A line stripe mismatch detection method, comprising:
acquiring a first image of line stripes collected by a first camera and a second image of line stripes collected by a second camera, wherein the first image at least comprises: a first line stripe and a second line stripe; the second image at least comprises: a third line stripe and a fourth line stripe, the first line stripe is adjacent to the second line stripe, and the third line stripe is adjacent to the fourth line stripe;
matching the first line stripe with the third line stripe to determine a first test distance between the first line stripe and the third line stripe, matching the second line stripe with the fourth line stripe to determine a second test distance between the second line stripe and the fourth line stripe; and
determining whether the line stripes are mismatched according to the first test distance and the second test distance;
wherein before acquiring the first line stripe and the second line stripe collected by the first camera and the third line stripe and the fourth line stripe collected by the second camera, the method further comprises:
projecting the line stripes onto a surface of an object to be scanned, wherein the line stripes comprise: a first line stripe cycle and a second line stripe cycle, a distance between a line stripe at a first position in the first line stripe cycle and a line stripe at a first position in the second line stripe cycle is a first predetermined distance, a distance between a line stripe at a second position in the first line stripe cycle and a line stripe at a second position in the second line stripe cycle is a second predetermined distance, the first predetermined distance is different from the second predetermined distance, and the line stripe at the first position and the line stripe at the second position in the same line stripe cycle are adjacent; and
collecting, by the first camera and the second camera, the line stripes on the surface of the object to be scanned.