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A. Antonacopoulos and D. Karatzas
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E-mail: aa@csc.liv.ac.uk
Tel: +44-151-794 3695
Fax: +44-151-794 3715
WWW: http://www.csc.liv.ac.uk/~aa
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There is a significant need to analyse the text in images on WWW pages, both for effective
indexing and for presentation by non-visual means (e.g., audio). This paper argues that the
extraction of text from such images benefits from an anthropocentric approach in the distinction
between colour regions. The novelty of the idea is the use of a human perspective of colour
perception in preference to RGB colour space analysis. This enables the extraction of text in
complex situations such as in the presence of varying colour and texture (characters and
background). More precisely, characters are extracted as distinct regions with separate
chromaticity and/or luminance by performing a layer decomposition of the image. The method

  

Source: Antonacopoulos, Apostolos - School of Computing, Science and Engineering, University of Salford

 

Collections: Computer Technologies and Information Sciences