research-article

Memory-based recognition of camera-captured characters

Authors:

Masakazu Iwamura,

Tomohiko Tsuji,

Koichi KiseAuthors Info & Claims

DAS '10: Proceedings of the 9th IAPR International Workshop on Document Analysis Systems

Pages 89 - 96

https://doi.org/10.1145/1815330.1815342

Published: 09 June 2010 Publication History

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Abstract

This paper addresses how to quickly recognize a character pattern using a lot of case examples without learning. Here without learning means just finding the most similar example from the case examples, and pretend as if the OCR understands the definition of the character. This strategy is expected to work well in most cases with a large dataset, however, also expected to take a lot of time for finding the most similar example. In this paper, we show that a lot of case examples can be processed in a short time. As a testbed, we handle recognition problem of camera-captured printed characters. Using a database storing 100 fonts, the proposed method achieved 97.0% of recognition rate for images captured from the right angle and 95.8% for those from 45 deg. with 4.56ms of processing time, that is about 220 characters per second including every process.

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M. Iwamura, R. Niwa, A. Horimatsu, K. Kise, S. Uchida, and S. Omachi. Layout-free dewarping of planar document images. In Proc. DRR XVI, 7247--36, Jan. 2009.

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Cited By

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Uchida S(2019)Text Localization and Recognition in Images and VideoHandbook of Document Image Processing and Recognition10.1007/978-0-85729-859-1_28(843-883)Online publication date: 24-Jul-2019
https://doi.org/10.1007/978-0-85729-859-1_28
Kise KOmachi SUchida SIwamura MInami MKunze K(2017)Reading-Life Log as a New Paradigm of Utilizing Character and Document MediaHuman-Harmonized Information Technology, Volume 210.1007/978-4-431-56535-2_7(197-233)Online publication date: 21-Apr-2017
https://doi.org/10.1007/978-4-431-56535-2_7
TAKEBE HUEHARA YUCHIDA S(2015)Efficient Anchor Graph Hashing with Data-Dependent Anchor SelectionIEICE Transactions on Information and Systems10.1587/transinf.2015EDL8060E98.D:11(2030-2033)Online publication date: 2015
https://doi.org/10.1587/transinf.2015EDL8060
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Index Terms

Memory-based recognition of camera-captured characters
1. Applied computing
  1. Document management and text processing
    1. Document capture
      1. Optical character recognition
2. Information systems
  1. Information retrieval
    1. Information retrieval query processing
  2. Information systems applications
    1. Multimedia information systems
      1. Multimedia databases

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Published In

DAS '10: Proceedings of the 9th IAPR International Workshop on Document Analysis Systems

June 2010

490 pages

ISBN:9781605587738

DOI:10.1145/1815330

General Chairs:
David Doermann
University of Maryland, College Park
,
Venu Govindaraju
University at Buffalo, SUNY
,
Daniel Lopresti
Lehigh University
,
Prem Natarajan
Raytheon BBN Technologies

Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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Association for Computing Machinery

New York, NY, United States

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Published: 09 June 2010

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DAS '10

DAS '10: The Eighth IAPR International Workshop on Document Analysis Systems

June 9 - 11, 2010

Massachusetts, Boston, USA

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Uchida S(2019)Text Localization and Recognition in Images and VideoHandbook of Document Image Processing and Recognition10.1007/978-0-85729-859-1_28(843-883)Online publication date: 24-Jul-2019
https://doi.org/10.1007/978-0-85729-859-1_28
Kise KOmachi SUchida SIwamura MInami MKunze K(2017)Reading-Life Log as a New Paradigm of Utilizing Character and Document MediaHuman-Harmonized Information Technology, Volume 210.1007/978-4-431-56535-2_7(197-233)Online publication date: 21-Apr-2017
https://doi.org/10.1007/978-4-431-56535-2_7
TAKEBE HUEHARA YUCHIDA S(2015)Efficient Anchor Graph Hashing with Data-Dependent Anchor SelectionIEICE Transactions on Information and Systems10.1587/transinf.2015EDL8060E98.D:11(2030-2033)Online publication date: 2015
https://doi.org/10.1587/transinf.2015EDL8060
Kuramoto KOhyama WWakabayashi TKimura F(2015)Efficient three dimensional rotation estimation for camera-based OCR2015 14th IAPR International Conference on Machine Vision Applications (MVA)10.1109/MVA.2015.7153110(459-462)Online publication date: May-2015
https://doi.org/10.1109/MVA.2015.7153110
Kuramoto KOhyama WWakabayashi TKimura F(2015)Efficient estimation of character normal direction for Camera-based OCRProceedings of the 2015 13th International Conference on Document Analysis and Recognition (ICDAR)10.1109/ICDAR.2015.7333786(371-375)Online publication date: 23-Aug-2015
https://dl.acm.org/doi/10.1109/ICDAR.2015.7333786
Narita ROhyama WWakabayashi TKimura F(2013)Three Dimensional Rotation-Free Camera-based Character RecognitionIEEJ Transactions on Electronics, Information and Systems10.1541/ieejeiss.133.876133:4(876-882)Online publication date: 2013
https://doi.org/10.1541/ieejeiss.133.876
Iwamura MSato TKise K(2013)What is the Most EfficientWay to Select Nearest Neighbor Candidates for Fast Approximate Nearest Neighbor Search?Proceedings of the 2013 IEEE International Conference on Computer Vision10.1109/ICCV.2013.439(3535-3542)Online publication date: 1-Dec-2013
https://dl.acm.org/doi/10.1109/ICCV.2013.439
Kuramoto KOhyama WWakabayashi TKimura F(2013)Accuracy Improvement of Viewpoint-Free Scene Character Recognition by Rotation Angle EstimationRevised Selected Papers of the International Workshop on Camera-Based Document Analysis and Recognition - Volume 835710.1007/978-3-319-05167-3_5(60-70)Online publication date: 23-Aug-2013
https://dl.acm.org/doi/10.1007/978-3-319-05167-3_5
Angadi SKodabagi MJerabandi M(2012)Character recognition of Kannada text in low resolution display board images using zone wise statistical features2012 World Congress on Information and Communication Technologies10.1109/WICT.2012.6409051(61-66)Online publication date: Oct-2012
https://doi.org/10.1109/WICT.2012.6409051
Kobayashi TToyamaya TShafait FIwamura MKise KDengel A(2012)Recognizing Words in Scenes with a Head-Mounted Eye-TrackerProceedings of the 2012 10th IAPR International Workshop on Document Analysis Systems10.1109/DAS.2012.74(333-338)Online publication date: 27-Mar-2012
https://dl.acm.org/doi/10.1109/DAS.2012.74
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Offline recognition of handwritten Bangla characters: an efficient two-stage approach

A hierarchical approach to recognition of handwritten Bangla characters

Unconstrained Camera Captured Indic Offline Handwritten Dataset

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