Retrieval of Historical Documents by Word Spotting
Identifieur interne : 000A68 ( Main/Exploration ); précédent : 000A67; suivant : 000A69Retrieval of Historical Documents by Word Spotting
Auteurs : Nikoleta Doulgeri [Grèce] ; Ergina Kavallieratou [Grèce]Source :
- Proceedings of SPIE, the International Society for Optical Engineering [ 0277-786X ] ; 2009.
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- Pascal (Inist)
English descriptors
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Abstract
The implementation of word spotting is not an easy procedure and it gets even worse in the case of historical documents since it requires character recognition and indexing of the document images. A general technique for word spotting is presented, independent of OCR, using automatic representation of the text queries of the user by word images and comparing them with the word images extracted from the document images. The proposed system does not require training. The only required preprocessing task is the alphabet determination. Global shape features are used to describe the words. They are very general in order to capture the form of the word and appropriately normalized in order to face the usual problems of variance in resolution, width of words and fonts. A novel technique that makes use of the interpolation method is presented. In our experiments, we analyze the system dependence on its parameters and we prove that its performance is similar to the trainable systems.
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SPIE Int. Soc. Opt. Eng.</title><idno type="ISSN">0277-786X</idno><imprint><date when="2009">2009</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Proceedings of SPIE, the International Society for Optical Engineering</title><title level="j" type="abbreviated">Proc. SPIE Int. Soc. Opt. Eng.</title><idno type="ISSN">0277-786X</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Alphabet</term><term>Character recognition</term><term>Document image processing</term><term>Implementation</term><term>Indexing</term><term>Interpolation</term><term>Learning</term><term>Optical character recognition</term><term>Query</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Implémentation</term><term>Reconnaissance caractère</term><term>Indexation</term><term>Traitement image document</term><term>Reconnaissance optique caractère</term><term>Requête</term><term>Apprentissage</term><term>Alphabet</term><term>Interpolation</term><term>0130C</term><term>Traitement image</term><term>4230V</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The implementation of word spotting is not an easy procedure and it gets even worse in the case of historical documents since it requires character recognition and indexing of the document images. A general technique for word spotting is presented, independent of OCR, using automatic representation of the text queries of the user by word images and comparing them with the word images extracted from the document images. The proposed system does not require training. The only required preprocessing task is the alphabet determination. Global shape features are used to describe the words. They are very general in order to capture the form of the word and appropriately normalized in order to face the usual problems of variance in resolution, width of words and fonts. A novel technique that makes use of the interpolation method is presented. In our experiments, we analyze the system dependence on its parameters and we prove that its performance is similar to the trainable systems.</div></front></TEI><affiliations><list><country><li>Grèce</li></country></list><tree><country name="Grèce"><noRegion><name sortKey="Doulgeri, Nikoleta" sort="Doulgeri, Nikoleta" uniqKey="Doulgeri N" first="Nikoleta" last="Doulgeri">Nikoleta Doulgeri</name></noRegion><name sortKey="Kavallieratou, Ergina" sort="Kavallieratou, Ergina" uniqKey="Kavallieratou E" first="Ergina" last="Kavallieratou">Ergina Kavallieratou</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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