Affine invariant recognition of characters by progressive pruning

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

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

6 引用 (Scopus)

抜粋

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.

元の言語英語
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
出版物ステータス出版済み - 12 22 2008
イベント8th IAPR International Workshop on Document Analysis Systems, DAS 2008 - Nara, 日本
継続期間: 9 16 20089 19 2008

出版物シリーズ

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

その他

その他8th IAPR International Workshop on Document Analysis Systems, DAS 2008
日本
Nara
期間9/16/089/19/08

All Science Journal Classification (ASJC) codes

  • Computer Science Applications
  • Information Systems

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。これらはともに一意のフィンガープリントを構成します。

  • これを引用

    Horimatsu, A., Niwa, R., Uchida, S., Iwamura, M., Omachi, S., & Kise, K. (2008). Affine invariant recognition of characters by progressive pruning. : DAS 2008 - Proceedings of the 8th IAPR International Workshop on Document Analysis Systems (pp. 237-244). [4669966] (DAS 2008 - Proceedings of the 8th IAPR International Workshop on Document Analysis Systems). https://doi.org/10.1109/DAS.2008.88