Unsupervised categorization method of graphemes on handwritten manuscripts: application to style recognition

H. Daher; D. Gaceb; V. Eglin; S. Bres; N. Vincent

doi:10.1117/12.910608

23 January 2012 Unsupervised categorization method of graphemes on handwritten manuscripts: application to style recognition

H. Daher, D. Gaceb, V. Eglin, S. Bres, N. Vincent

Author Affiliations +

Proceedings Volume 8297, Document Recognition and Retrieval XIX; 82970W (2012) https://doi.org/10.1117/12.910608
Event: IS&T/SPIE Electronic Imaging, 2012, Burlingame, California, United States

Abstract

We present in this paper a feature selection and weighting method for medieval handwriting images that relies on codebooks of shapes of small strokes of characters (graphemes that are issued from the decomposition of manuscripts). These codebooks are important to simplify the automation of the analysis, the manuscripts transcription and the recognition of styles or writers. Our approach provides a precise features weighting by genetic algorithms and a highperformance methodology for the categorization of the shapes of graphemes by using graph coloring into codebooks which are applied in turn on CBIR (Content Based Image Retrieval) in a mixed handwriting database containing different pages from different writers, periods of the history and quality. We show how the coupling of these two mechanisms 'features weighting - graphemes classification' can offer a better separation of the forms to be categorized by exploiting their grapho-morphological, their density and their significant orientations particularities.

Citation Download Citation

H. Daher, D. Gaceb, V. Eglin, S. Bres, and N. Vincent "Unsupervised categorization method of graphemes on handwritten manuscripts: application to style recognition", Proc. SPIE 8297, Document Recognition and Retrieval XIX, 82970W (23 January 2012); https://doi.org/10.1117/12.910608

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