Patent ID: 11887271
Assignee: HONG KONG APPLIED SCIENCE AND TECHNOLOGY RESEARCH INSTITUTE CO., LTD
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 4:
5. The method of claim 3, wherein the at least one thresholding criterion that the first discriminative line-pair and the second discriminative line-pair from a matching line-pair group satisfy comprises:
each of the following is within a respective pre-determined threshold:
an absolute difference between the minimum distance of the first discriminative line-pair and that of the second discriminative line-pair;
an absolute difference between the length of the first line of the first discriminative line-pair and length of the first line of the second discriminative line-pair;
an absolute difference between the length of the second line of the first discriminative line-pair and length of the second line of the second discriminative line-pair;
an absolute difference between a vertical value of the center point of the first line of the first discriminative line-pair and a vertical value of the center point of the first line of the second discriminative line-pair;
an absolute difference between a vertical value of the center point of the second line of the first discriminative line-pair and a vertical value of the center point of the second line of the second discriminative line-pair; and
an absolute difference between the acute angle of the first discriminative line-pair and the acute angle of the second discriminative line-pair.