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Proceedings Paper

Text enhancement method based on soft morphological filters
Author(s): Lasse Koskinen; Heikki Huttunen; Jaakko T. Astola
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Paper Abstract

Soft morphological filters are robustly behaving extensions of standard flat morphological filters which include, as an extreme case, the weighted median filter. Soft morphological filters can take into account the geometrical shape of the processed objects and, at the same time, they are robust to additive noise and small variations in the shapes of the objects to be filtered. For suitable parameters they also have a good ability for preserving details. Thus, they provide a robust method for text enhancement. In this paper, an enhancement method based on soft morphological filters is demonstrated.

Paper Details

Date Published: 23 March 1994
PDF: 11 pages
Proc. SPIE 2181, Document Recognition, (23 March 1994); doi: 10.1117/12.171111
Show Author Affiliations
Lasse Koskinen, Tampere Univ. (Finland)
Heikki Huttunen, Tampere Univ. (Finland)
Jaakko T. Astola, Tampere Univ. (Finland)


Published in SPIE Proceedings Vol. 2181:
Document Recognition
Luc M. Vincent; Theo Pavlidis, Editor(s)

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