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Authors: Teófilo E. de Campos 1 ; Bodla Rakesh Babu 2 and Manik Varma 3

Affiliations: 1 Xerox Research Centre Europe, France ; 2 International Institute of Information Technology, India ; 3 Microsoft Research India, India

ISBN: 978-989-8111-69-2

Keyword(s): Object recognition, Camera-based character recognition, Latin characters, Digits, Kannada characters, Offline handwritten character recognition.

Related Ontology Subjects/Areas/Topics: Artificial Intelligence ; Biomedical Engineering ; Biomedical Signal Processing ; Computer Vision, Visualization and Computer Graphics ; Data Manipulation ; Feature Extraction ; Features Extraction ; Health Engineering and Technology Applications ; Human-Computer Interaction ; Image and Video Analysis ; Informatics in Control, Automation and Robotics ; Methodologies and Methods ; Neurocomputing ; Neurotechnology, Electronics and Informatics ; Pattern Recognition ; Physiological Computing Systems ; Sensor Networks ; Signal Processing, Sensors, Systems Modeling and Control ; Soft Computing

Abstract: This paper tackles the problem of recognizing characters in images of natural scenes. In particular, we focus on recognizing characters in situations that would traditionally not be handled well by OCR techniques. We present an annotated database of images containing English and Kannada characters. The database comprises of images of street scenes taken in Bangalore, India using a standard camera. The problem is addressed in an object cateogorization framework based on a bag-of-visual-words representation. We assess the performance of various features based on nearest neighbour and SVMclassification. It is demonstrated that the performance of the proposed method, using as few as 15 training images, can be far superior to that of commercial OCR systems. Furthermore, the method can benefit from synthetically generated training data obviating the need for expensive data collection and annotation.

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Paper citation in several formats:
E. de Campos T.; Rakesh Babu B.; Varma M. and (2009). CHARACTER RECOGNITION IN NATURAL IMAGES.In Proceedings of the Fourth International Conference on Computer Vision Theory and Applications - Volume 2: VISAPP, (VISIGRAPP 2009) ISBN 978-989-8111-69-2, pages 273-280. DOI: 10.5220/0001770102730280

@conference{visapp09,
author={Teófilo {E. de Campos} and Bodla {Rakesh Babu} and Manik Varma},
title={CHARACTER RECOGNITION IN NATURAL IMAGES},
booktitle={Proceedings of the Fourth International Conference on Computer Vision Theory and Applications - Volume 2: VISAPP, (VISIGRAPP 2009)},
year={2009},
pages={273-280},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0001770102730280},
isbn={978-989-8111-69-2},
}

TY - CONF

JO - Proceedings of the Fourth International Conference on Computer Vision Theory and Applications - Volume 2: VISAPP, (VISIGRAPP 2009)
TI - CHARACTER RECOGNITION IN NATURAL IMAGES
SN - 978-989-8111-69-2
AU - E. de Campos, T.
AU - Rakesh Babu, B.
AU - Varma, M.
PY - 2009
SP - 273
EP - 280
DO - 10.5220/0001770102730280

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