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 17:
18. The system of claim 17, wherein the voting scheme comprises:
establishing a voting table, wherein rows of the voting table indicate the first set of discriminative line-pairs and columns of the voting table indicate a finite number of angular bins corresponding to quantized compass angle differences, wherein all cells in the voting table are initialized to zero;
for each of the rows in the voting table,
identifying a candidate set of second discriminative line-pairs from the plurality of matching line-pair groups wherein its first discriminative line-pair corresponds to the row and using the row as an index;
for each entry in the candidate set, retrieving the compass angle difference between the second discriminative line-pair corresponding to the entry and the first discriminative line-pair corresponding to the row;
if the retrieved compass angle difference falls into a particular angular bin of the row, incrementing the voting table cell corresponding to the particular angular bin of the row;

tallying up the counts for each of the columns; and
identifying a compass angle difference corresponding to a column having the maximum value as the best orientation angle.