LeHavreV1, Main, Exploration, bibRecord, 000A90

Symbol Detection Using Region Adjacency Graphs and Integer Linear Programming

Identifieur interne : 000A90 ( Main/Exploration ); précédent : 000A89; suivant : 000A91

Symbol Detection Using Region Adjacency Graphs and Integer Linear Programming

Auteurs : Pierre Le Bodic [France] ; Hervé Locteau [France] ; Sébastien Adam [France] ; Pierre Héroux [France] ; Yves Lecourtier [France] ; Arnaud Knippel [France]

Source :

RBID : Hal:inria-00432616

Abstract

In this paper, we tackle the problem of localizing graphical symbols on complex technical document images by using an original approach to solve the subgraph isophism problem. In the proposed system, document and symbol images are represented by vector-attributed Region Adjacency Graphs (RAG) which are extracted by a segmentation process and feature extractors. Vertices representing regions are labeled with shape descriptors whereas edges are labeled with feature vector representing topological relations between the regions. Then, in order to search the instances of a model graph describing a particular symbol in a large graph corresponding to a whole document, we model the subgraph isomorphism problem as an Integer Linear Program (ILP) which enables to be error-tolerant on vectorial labels. The problem is then solved using a free efficient solver called SYMPHONY. The whole system is evaluated on a set of synthetic documents.

Url:

https://hal.inria.fr/inria-00432616

DOI: 10.1109/ICDAR.2009.202

Affiliations:

Links toward previous steps (curation, corpus...)

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Le document en format XML

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<orgName type="acronym">INPL</orgName>
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</address>
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<orgName>Centre National de la Recherche Scientifique</orgName>
<orgName type="acronym">CNRS</orgName>
<date type="start">1939-10-19</date>
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<country>France</country>
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<orgName type="university">Université Nancy 2</orgName>
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<author><name sortKey="Adam, Sebastien" sort="Adam, Sebastien" uniqKey="Adam S" first="Sébastien" last="Adam">Sébastien Adam</name>
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<orgName type="acronym">LITIS</orgName>
<desc><address><addrLine>Avenue de l'Université UFR des Sciences et Techniques 76800 Saint-Etienne du Rouvray</addrLine>
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<country>France</country>
<placeName><settlement type="city">Le Havre</settlement>
<region type="region" nuts="2">Région Normandie</region>
<region type="old region" nuts="2">Haute-Normandie</region>
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<region type="old region" nuts="2">Haute-Normandie</region>
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<orgName type="university">Université de Rouen</orgName>
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<author><name sortKey="Heroux, Pierre" sort="Heroux, Pierre" uniqKey="Heroux P" first="Pierre" last="Héroux">Pierre Héroux</name>
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<orgName type="acronym">LITIS</orgName>
<desc><address><addrLine>Avenue de l'Université UFR des Sciences et Techniques 76800 Saint-Etienne du Rouvray</addrLine>
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<country>France</country>
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<region type="region" nuts="2">Région Normandie</region>
<region type="old region" nuts="2">Haute-Normandie</region>
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<orgName type="university">Université du Havre</orgName>
<placeName><settlement type="city">Rouen</settlement>
<region type="region" nuts="2">Région Normandie</region>
<region type="old region" nuts="2">Haute-Normandie</region>
</placeName>
<orgName type="university">Université de Rouen</orgName>
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<author><name sortKey="Lecourtier, Yves" sort="Lecourtier, Yves" uniqKey="Lecourtier Y" first="Yves" last="Lecourtier">Yves Lecourtier</name>
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<region type="region" nuts="2">Région Normandie</region>
<region type="old region" nuts="2">Haute-Normandie</region>
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<orgName type="university">Université du Havre</orgName>
<placeName><settlement type="city">Rouen</settlement>
<region type="region" nuts="2">Région Normandie</region>
<region type="old region" nuts="2">Haute-Normandie</region>
</placeName>
<orgName type="university">Université de Rouen</orgName>
</affiliation>
</author>
<author><name sortKey="Knippel, Arnaud" sort="Knippel, Arnaud" uniqKey="Knippel A" first="Arnaud" last="Knippel">Arnaud Knippel</name>
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<orgName type="acronym">LMI</orgName>
<desc><address><addrLine>Normandie Université, INSA de ROUEN, LMI, Av. de l'Université, BP 08, 76801 St Etienne du Rouvray cedex</addrLine>
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<country>France</country>
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<idno type="DOI">10.1109/ICDAR.2009.202</idno>
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<front><div type="abstract" xml:lang="en">In this paper, we tackle the problem of localizing graphical symbols on complex technical document images by using an original approach to solve the subgraph isophism problem. In the proposed system, document and symbol images are represented by vector-attributed Region Adjacency Graphs (RAG) which are extracted by a segmentation process and feature extractors. Vertices representing regions are labeled with shape descriptors whereas edges are labeled with feature vector representing topological relations between the regions. Then, in order to search the instances of a model graph describing a particular symbol in a large graph corresponding to a whole document, we model the subgraph isomorphism problem as an Integer Linear Program (ILP) which enables to be error-tolerant on vectorial labels. The problem is then solved using a free efficient solver called SYMPHONY. The whole system is evaluated on a set of synthetic documents.</div>
</front>
</TEI>
<affiliations><list><country><li>France</li>
</country>
<region><li>Grand Est</li>
<li>Haute-Normandie</li>
<li>Lorraine (région)</li>
<li>Région Normandie</li>
</region>
<settlement><li>Le Havre</li>
<li>Nancy</li>
<li>Rouen</li>
</settlement>
<orgName><li>Institut national polytechnique de Lorraine</li>
<li>Université Nancy 2</li>
<li>Université de Lorraine</li>
<li>Université de Rouen</li>
<li>Université du Havre</li>
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<tree><country name="France"><noRegion><name sortKey="Le Bodic, Pierre" sort="Le Bodic, Pierre" uniqKey="Le Bodic P" first="Pierre" last="Le Bodic">Pierre Le Bodic</name>
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<name sortKey="Adam, Sebastien" sort="Adam, Sebastien" uniqKey="Adam S" first="Sébastien" last="Adam">Sébastien Adam</name>
<name sortKey="Heroux, Pierre" sort="Heroux, Pierre" uniqKey="Heroux P" first="Pierre" last="Héroux">Pierre Héroux</name>
<name sortKey="Knippel, Arnaud" sort="Knippel, Arnaud" uniqKey="Knippel A" first="Arnaud" last="Knippel">Arnaud Knippel</name>
<name sortKey="Lecourtier, Yves" sort="Lecourtier, Yves" uniqKey="Lecourtier Y" first="Yves" last="Lecourtier">Yves Lecourtier</name>
<name sortKey="Locteau, Herve" sort="Locteau, Herve" uniqKey="Locteau H" first="Hervé" last="Locteau">Hervé Locteau</name>
</country>
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Symbol Detection Using Region Adjacency Graphs and Integer Linear Programming

Symbol Detection Using Region Adjacency Graphs and Integer Linear Programming

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