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A Hybrid Approach to Detect Graphical Symbols in Documents

  • Salvatore Tabbone
  • Laurent Wendling
  • Daniel Zuwala
Part of the Lecture Notes in Computer Science book series (LNCS, volume 3163)

Abstract

We propose to combine a feature descriptor method with a structural representation of symbols. An adaptation of the Radon transform, keeping main geometric transformations usually required for the recognition of symbols, is provided. In order to improve the recognition step we directly process on the grey level document. In this perspective, a three-dimensional signature integrates into a same formalism both the shape of the object and its photometric variations. More precisely the signature is computed within the symbol following several grey levels. Additionally a structural representation of symbols allows to localize into the document candidate symbols.

Keywords

Structural Representation Junction Point Symbol Recognition Graphic Recognition Skeleton Image 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2004

Authors and Affiliations

  • Salvatore Tabbone
    • 1
  • Laurent Wendling
    • 1
  • Daniel Zuwala
    • 1
  1. 1.Loria-UMR 7503, Campus ScientifiqueVillers-lès-Nancy CedexFrance

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