Affine invariant recognition of characters by progressive pruning

Akira Horimatsu, Ryo Niwa, Seiichi Uchida, Masakazu Iwamura, Shinichiro Omachi, Koichi Kise

研究成果: Conference contribution

6 被引用数 (Scopus)

抄録

There are many problems to realize camera-based character recognition. One of the problems is that characters in scenes are often distorted by geometric transformations such as affine distortions. Although some methods that remove the affine distortions have been proposed, they cannot remove a rotation transformation of a character. Thus a skew angle of a character has to be determined by examining all the possible angles. However, this consumes quite a bit of time. In this paper, in order to reduce the processing time for an affine invariant recognition, we propose a set of affine invariant features and a new recognition scheme called "progressive pruning." The progressive pruning gradually prunes less feasible categories and skew angles using multiple classifiers. We confirmed the progressive pruning with the affine invariant features reduced the processing time at least less than half without decreasing the recognition rate.

本文言語English
ホスト出版物のタイトルDAS 2008 - Proceedings of the 8th IAPR International Workshop on Document Analysis Systems
ページ237-244
ページ数8
DOI
出版ステータスPublished - 2008
イベント8th IAPR International Workshop on Document Analysis Systems, DAS 2008 - Nara, Japan
継続期間: 2008 9 162008 9 19

出版物シリーズ

名前DAS 2008 - Proceedings of the 8th IAPR International Workshop on Document Analysis Systems

Other

Other8th IAPR International Workshop on Document Analysis Systems, DAS 2008
国/地域Japan
CityNara
Period08/9/1608/9/19

ASJC Scopus subject areas

  • コンピュータ サイエンスの応用
  • 情報システム

フィンガープリント

「Affine invariant recognition of characters by progressive pruning」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル