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Cohen's Class Distributions for Skew Angle Estimation in Noisy Ancient Arabic Documents

Identifieur interne : 003543 ( Main/Merge ); précédent : 003542; suivant : 003544

Cohen's Class Distributions for Skew Angle Estimation in Noisy Ancient Arabic Documents

Auteurs : Nazih Ouwayed [France] ; Abdel Belaïd [France] ; François Auger [France]

Source :

RBID : Hal:inria-00435253

Abstract

This paper presents an adaptive method for the skew angle estimation of noisy handwritten Arabic documents using the energy distributions of Cohen's class. The presence of noise in raw document images can create local maxima which disturb the projection histogram analysis. To avoid this drawback, we propose to use Cohen's class distributions on the projection histogram profiles obtained using different projection angles. These distributions reduce the importance of these local maxima and are fitted to the nonstationary nature of these histogram profiles. The orientation of the document is given by the highest maximum. The proposed skew angle detection technique has been evaluated on 864 skewed documents. The results of each distribution are presented at the end of this paper.

Url:
DOI: 10.1145/1568296.1568305

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Hal:inria-00435253

Le document en format XML

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<addrLine>Ecole polytechnique de l'université de Nantes Rue Christian Pauc - La Chantrerie BP 50609 44306 Nantes Cedex 3 - France</addrLine>
<country key="FR"></country>
</address>
<ref type="url">http://www.polytech.univ-nantes.fr/ireena/</ref>
</desc>
<listRelation>
<relation name="EA1770" active="#struct-93263" type="direct"></relation>
</listRelation>
<tutelles>
<tutelle name="EA1770" active="#struct-93263" type="direct">
<org type="institution" xml:id="struct-93263" status="VALID">
<orgName>Université de Nantes</orgName>
<orgName type="acronym">UN</orgName>
<desc>
<address>
<addrLine>1, quai de Tourville - BP 13522 - 44035 Nantes cedex 1</addrLine>
<country key="FR"></country>
</address>
<ref type="url">http://www.univ-nantes.fr/</ref>
</desc>
</org>
</tutelle>
</tutelles>
</hal:affiliation>
<country>France</country>
<placeName>
<settlement type="city">Nantes</settlement>
<region type="region" nuts="2">Pays de la Loire</region>
</placeName>
<orgName type="university">Université de Nantes</orgName>
</affiliation>
</author>
</analytic>
<idno type="DOI">10.1145/1568296.1568305</idno>
</biblStruct>
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<textClass></textClass>
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<front>
<div type="abstract" xml:lang="en">This paper presents an adaptive method for the skew angle estimation of noisy handwritten Arabic documents using the energy distributions of Cohen's class. The presence of noise in raw document images can create local maxima which disturb the projection histogram analysis. To avoid this drawback, we propose to use Cohen's class distributions on the projection histogram profiles obtained using different projection angles. These distributions reduce the importance of these local maxima and are fitted to the nonstationary nature of these histogram profiles. The orientation of the document is given by the highest maximum. The proposed skew angle detection technique has been evaluated on 864 skewed documents. The results of each distribution are presented at the end of this paper.</div>
</front>
</TEI>
</record>

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