US 12,033,427 B2
Stripe pattern image collating device, stripe pattern collating method, and computer-readable medium storing program thereof
Akira Hirokawa, Tokyo (JP); and Tatsuya Shimahara, Tokyo (JP)
Assigned to NEC CORPORATION, Tokyo (JP)
Appl. No. 17/913,026
Filed by NEC Corporation, Tokyo (JP)
PCT Filed Mar. 27, 2020, PCT No. PCT/JP2020/014403
§ 371(c)(1), (2) Date Sep. 20, 2022,
PCT Pub. No. WO2021/192315, PCT Pub. Date Sep. 30, 2021.
Prior Publication US 2023/0144689 A1, May 11, 2023
Int. Cl. G06V 40/12 (2022.01); G06T 5/00 (2024.01); G06T 5/80 (2024.01); G06V 10/80 (2022.01)
CPC G06V 40/1359 (2022.01) [G06T 5/80 (2024.01); G06V 10/806 (2022.01); G06T 2207/20044 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A stripe pattern image collating device comprising:
at least one processor; and
at least one memory storing instructions executable by the at least one processor to:
extract a feature point and a skeleton from a first stripe pattern image and a second stripe pattern image in which a stripe pattern is formed of ridges, and generate feature point data and skeleton data;
collate two sets of pieces of the feature point data and pieces of the skeleton data that are extracted from each of the first stripe pattern image and the second stripe pattern image, and calculate a collation score; and
analyze the second stripe pattern image with respect to an area in which an opposite feature point pair of the first stripe pattern image exists, calculate an image analysis score, and correct the collation score,
wherein the opposite feature point pair comprises two feature points that are located in a vicinity of one another and that have opposite directions such that the two feature points face one another.