Affine-Invariant Character Recognition by Progressive Removing

LanguageEnglish
TypeOthers
AuthorsMasakazu Iwamura, Akira Horimatsu, Ryo Niwa, Koichi Kise, Seiichi Uchida, Shinichiro Omachi
TitleAffine-Invariant Character Recognition by Progressive Removing
JournalElectrical Engineering in Japan
Vol.180
No.2
Pagespp.55-63
PublisherWiley Periodicals, Inc.
ReviewedNot reviewed
DateJuly 2012
Research fieldsPattern recognition, Document Image Analysis
KeyIwamura2012 (id=1347)

Abstract

Recognizing characters in scene images suffering from perspective distortion is a challenge. Although there are some methods to overcome this difficulty, they are time-consuming. In this paper, we propose a set of affineinvariant features and a new recognition scheme called “progressive removing” that can help reduce the processing time. Progressive removing gradually removes less feasible categories and skew angles by using multiple classifiers. We observed that progressive removing and the use of the affine invariant features reduced the processing time by about 60% in comparison to a trivial algorithm without decreasing the recognition rate. © 2012 Wiley Periodicals, Inc. Electr Eng Jpn, 180(2): 55–63, 2012; Published online in Wiley Online Library (wileyonlinelibrary.com). DOI 10.1002/eej.22276

Note

Translated from IEEJ Transactions on Industry Applications (Denki Gakkai Ronbunshi), Vol. 131-D, No. 7, July 2011, pp. 873–879. PDF file is available at Wiley's website.

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