Structure extraction from decorated characters using multiscaleimages
Omachi, S.
Inoue, M.
Aso, H.
Dept. of Electr. Commun., Tohoku Univ., Sendai ;
This paper appears in: Pattern Analysis and Machine Intelligence, IEEE Transactions on
Publication Date: Mar 2001
Volume: 23,
Issue: 3
On page(s): 315-322
ISSN: 0162-8828
References Cited: 24
CODEN: ITPIDJ
INSPEC Accession Number: 6921858
Digital Object Identifier: 10.1109/34.910884
Current Version Published: 2002-08-07
Abstract
Decorated characters are widely used in various documents.
Practical optical character reader is required to deal with not only
common fonts but also complex designed fonts. However, since the
appearances of decorated characters are complicated, most general
character recognition systems cannot give good performances on decorated
characters. In this paper, an algorithm that can extract character's
essential structure from a decorated character is proposed. This
algorithm is applied in preprocessing of character recognition. The
proposed algorithm consists of three procedures: global structure
extraction, interpolation of structure and smoothing. By using
multiscale images, topographical features, such as ridges and ravines
are detected for structure extraction. Ridges are used for extracting
global structure and ravines are used for interpolation. Experimental
results show character structures can be clearly extracted from very
complex decorated characters
Index
Terms
Available to subscribers and IEEE members.
References
Available to subscribers and IEEE members.
Citing Documents
Available to subscribers and IEEE members.
Cart
