Italic or Roman : Word Style Recognition Without A Priori Knowledge for Old Printed Documents
Résumé
This paper presents an Italic/Roman word type recognition
system without a priori knowledge on the characters’
font. This method aims at analyzing old documents in
which character segmentation is not trivial. Therefore our
approach segments the document into words and analyse
the text word per word. To define the word style, we combine
three criteria which are based on the visual differences
between a word and a slanted version of the same word.
These criteria are defined thanks to features computed from
the vertical projection profile of the word. Because we do
not assume a specific slant angle, we compute these measures
on a whole range of possible slant angles and then
sum the obtained scores. Our results show a ratio of 100 %
recognition for Italic words and 97.2 % for Roman words.