发明名称 |
Method and apparatus for sequencing off-line character from natural scene |
摘要 |
Disclosed is a method of sequencing character information in order to increase precision of character recognition. The method includes: a pre-processing that extracts character information from an image to binarize the extracted character information through a predetermined threshold and extracts and thins a center line of the binarized character information; normalizing the pre-processed character information to character information according to a predetermined criteria; and sequencing the normalized character information using structural features including an end point or a divergence point of the character information. The present invention suggests an angle normalization method of input character information, a structural feature position determining method, and a structural feature numeral string generating method to strongly recognize characters configured by various fonts obtained from a natural scene regardless of an angle or a size of the characters. |
申请公布号 |
US8934716(B2) |
申请公布日期 |
2015.01.13 |
申请号 |
US201213599111 |
申请日期 |
2012.08.30 |
申请人 |
Electronics and Telecommunications Research Institute |
发明人 |
Yoon Ho Sub;Kim Ji Eun;Ban Kyu Dae;Lee Dong Jin;Kim Jae Hong;Sohn Joo Chan |
分类号 |
G06K9/34;G06K9/46 |
主分类号 |
G06K9/34 |
代理机构 |
Nelson Mullins Riley & Scarborough LLP |
代理人 |
Nelson Mullins Riley & Scarborough LLP ;Laurentano, Esq. Anthony A.;Lee, Esq. Lewis |
主权项 |
1. A method of sequencing character information, comprising:
a pre-processing step in which a pre-processing unit extracts character information from an image to binarize the extracted character information through a predetermined threshold value and thins the binarized character information to be information having lines with a predetermined thickness; a step in which a normalizing unit normalizes the character information pre-processed in the pre-processing step to character information according to a predetermined criteria; and a sequencing step in which a sequencing unit converts the normalized character information into information numeralized using structural features including an end point or a divergence point of the character information. |
地址 |
Daejeon KR |