TY - JOUR
T1 - Decorative character recognition by graph matching
AU - Omachi, Shinichiro
AU - Megawa, Shunichi
AU - Aso, Hirotomo
PY - 2007/10
Y1 - 2007/10
N2 - A practical optical character reader is required to deal with not only common fonts but also complex designed fonts. However, recognizing various kinds of decorative character images is still a challenging problem in the field of document image analysis. Since appearances of such decorative characters are complicated, most general character recognition systems cannot give good performances on decorative characters. In this paper, an algorithm that recognizes decorative characters by structural analysis using a graph-matching technique is proposed. Character structure is extracted by using topographical features of multi-scale images, and the extracted structure is represented by a graph. A character image is recognized by matching graphs of the input and standard patterns. Experimental results show the effectiveness of the proposed algorithm.
AB - A practical optical character reader is required to deal with not only common fonts but also complex designed fonts. However, recognizing various kinds of decorative character images is still a challenging problem in the field of document image analysis. Since appearances of such decorative characters are complicated, most general character recognition systems cannot give good performances on decorative characters. In this paper, an algorithm that recognizes decorative characters by structural analysis using a graph-matching technique is proposed. Character structure is extracted by using topographical features of multi-scale images, and the extracted structure is represented by a graph. A character image is recognized by matching graphs of the input and standard patterns. Experimental results show the effectiveness of the proposed algorithm.
KW - Character recognition
KW - Decorative character
KW - Graph matching
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U2 - 10.1093/ietisy/e90-d.10.1720
DO - 10.1093/ietisy/e90-d.10.1720
M3 - Article
AN - SCOPUS:68249144671
VL - E90-D
SP - 1720
EP - 1723
JO - IEICE Transactions on Information and Systems
JF - IEICE Transactions on Information and Systems
SN - 0916-8532
IS - 10
ER -