PASCAL - Pattern Analysis, Statistical Modelling and Computational Learning

Character Recognition in Natural Images
Teo de Campos, Bodla Rakesh Babu and Manik Varma
In: VISAPP, 05-08 Feb 2009, Lisbon.

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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EPrint Type:Conference or Workshop Item (Paper)
Project Keyword:Project Keyword UNSPECIFIED
Subjects:Machine Vision
ID Code:9132
Deposited By:Teo de Campos
Deposited On:21 February 2012