OcrV1, Main, Exploration, bibRecord, 000A92

Automatic Classification of Spatial Relationships among Mathematical Symbols Using Geometric Features

Identifieur interne : 000A92 ( Main/Exploration ); précédent : 000A91; suivant : 000A93

Automatic Classification of Spatial Relationships among Mathematical Symbols Using Geometric Features

Auteurs : Walaa Aly [Japon] ; Seiichi Uchida [Japon] ; Masakazu Suzuki (mathématicien) [Japon]

Source :

IEICE transactions on information and systems [ 0916-8532 ] ; 2009.

RBID : Pascal:10-0197905

Descripteurs français

Pascal (Inist)
- Classification automatique, Formule mathématique, Document imprimé, Analyse structurale, Reconnaissance optique caractère, Base de données, Précision, Classification signal, Reconnaissance forme.
Wicri :
- topic : Base de données.

English descriptors

KwdEn :
- Accuracy, Automatic classification, Database, Mathematical formula, Optical character recognition, Pattern recognition, Printed document, Signal classification, Structural analysis.

Abstract

Machine recognition of mathematical expressions on printed documents is not trivial even when all the individual characters and symbols in an expression can be recognized correctly. In this paper, an automatic classification method of spatial relationships between the adjacent symbols in a pair is presented. This classification is important to realize an accurate structure analysis module of math OCR. Experimental results on very large databases showed that this classification worked well with an accuracy of 99.525% by using distribution maps which are defined by two geometric features, relative size and relative position, with careful treatment on document-dependent characteristics.

Affiliations:

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

to stream PascalFrancis, to step Corpus: 000187
to stream PascalFrancis, to step Curation: 000590
to stream PascalFrancis, to step Checkpoint: 000209
to stream Main, to step Merge: 000B03
to stream Main, to step Curation: 000A92

Le document en format XML

<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en" level="a">Automatic Classification of Spatial Relationships among Mathematical Symbols Using Geometric Features</title>
<author><name sortKey="Aly, Walaa" sort="Aly, Walaa" uniqKey="Aly W" first="Walaa" last="Aly">Walaa Aly</name>
<affiliation wicri:level="4"><inist:fA14 i1="01"><s1>Department of Intelligent Systems, Kyushu University</s1>
<s2>Fukuoka-shi, 819-0395</s2>
<s3>JPN</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
</inist:fA14>
<country>Japon</country>
<placeName><settlement type="city">Fukuoka</settlement>
<region type="province">Kyūshū</region>
<region type="prefecture">Préfecture de Fukuoka</region>
</placeName>
<orgName type="university">Université de Kyūshū</orgName>
</affiliation>
</author>
<author><name sortKey="Uchida, Seiichi" sort="Uchida, Seiichi" uniqKey="Uchida S" first="Seiichi" last="Uchida">Seiichi Uchida</name>
<affiliation wicri:level="4"><inist:fA14 i1="01"><s1>Department of Intelligent Systems, Kyushu University</s1>
<s2>Fukuoka-shi, 819-0395</s2>
<s3>JPN</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
</inist:fA14>
<country>Japon</country>
<placeName><settlement type="city">Fukuoka</settlement>
<region type="province">Kyūshū</region>
<region type="prefecture">Préfecture de Fukuoka</region>
</placeName>
<orgName type="university">Université de Kyūshū</orgName>
</affiliation>
</author>
<author><name sortKey="Suzuki, Masakazu" sort="Suzuki, Masakazu" uniqKey="Suzuki M" first="Masakazu" last="Suzuki">Masakazu Suzuki (mathématicien)</name>
<affiliation wicri:level="4"><inist:fA14 i1="02"><s1>Department of Mathematics, Kyushu University</s1>
<s2>Fukuoka-shi, 812-8581</s2>
<s3>JPN</s3>
<sZ>3 aut.</sZ>
</inist:fA14>
<country>Japon</country>
<placeName><settlement type="city">Fukuoka</settlement>
<region type="province">Kyūshū</region>
<region type="prefecture">Préfecture de Fukuoka</region>
</placeName>
<orgName type="university">Université de Kyūshū</orgName>
<placeName><settlement type="city">Fukuoka</settlement>
<region type="province">Kyūshū</region>
<region type="prefecture">Préfecture de Fukuoka</region>
</placeName>
<orgName type="university" n="3">Université de Kyūshū</orgName>
</affiliation>
</author>
</titleStmt>
<publicationStmt><idno type="wicri:source">INIST</idno>
<idno type="inist">10-0197905</idno>
<date when="2009">2009</date>
<idno type="stanalyst">PASCAL 10-0197905 INIST</idno>
<idno type="RBID">Pascal:10-0197905</idno>
<idno type="wicri:Area/PascalFrancis/Corpus">000187</idno>
<idno type="wicri:Area/PascalFrancis/Curation">000590</idno>
<idno type="wicri:Area/PascalFrancis/Checkpoint">000209</idno>
<idno type="wicri:doubleKey">0916-8532:2009:Aly W:automatic:classification:of</idno>
<idno type="wicri:Area/Main/Merge">000B03</idno>
<idno type="wicri:Area/Main/Curation">000A92</idno>
<idno type="wicri:Area/Main/Exploration">000A92</idno>
</publicationStmt>
<sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Automatic Classification of Spatial Relationships among Mathematical Symbols Using Geometric Features</title>
<author><name sortKey="Aly, Walaa" sort="Aly, Walaa" uniqKey="Aly W" first="Walaa" last="Aly">Walaa Aly</name>
<affiliation wicri:level="4"><inist:fA14 i1="01"><s1>Department of Intelligent Systems, Kyushu University</s1>
<s2>Fukuoka-shi, 819-0395</s2>
<s3>JPN</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
</inist:fA14>
<country>Japon</country>
<placeName><settlement type="city">Fukuoka</settlement>
<region type="province">Kyūshū</region>
<region type="prefecture">Préfecture de Fukuoka</region>
</placeName>
<orgName type="university">Université de Kyūshū</orgName>
</affiliation>
</author>
<author><name sortKey="Uchida, Seiichi" sort="Uchida, Seiichi" uniqKey="Uchida S" first="Seiichi" last="Uchida">Seiichi Uchida</name>
<affiliation wicri:level="4"><inist:fA14 i1="01"><s1>Department of Intelligent Systems, Kyushu University</s1>
<s2>Fukuoka-shi, 819-0395</s2>
<s3>JPN</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
</inist:fA14>
<country>Japon</country>
<placeName><settlement type="city">Fukuoka</settlement>
<region type="province">Kyūshū</region>
<region type="prefecture">Préfecture de Fukuoka</region>
</placeName>
<orgName type="university">Université de Kyūshū</orgName>
</affiliation>
</author>
<author><name sortKey="Suzuki, Masakazu" sort="Suzuki, Masakazu" uniqKey="Suzuki M" first="Masakazu" last="Suzuki">Masakazu Suzuki (mathématicien)</name>
<affiliation wicri:level="4"><inist:fA14 i1="02"><s1>Department of Mathematics, Kyushu University</s1>
<s2>Fukuoka-shi, 812-8581</s2>
<s3>JPN</s3>
<sZ>3 aut.</sZ>
</inist:fA14>
<country>Japon</country>
<placeName><settlement type="city">Fukuoka</settlement>
<region type="province">Kyūshū</region>
<region type="prefecture">Préfecture de Fukuoka</region>
</placeName>
<orgName type="university">Université de Kyūshū</orgName>
<placeName><settlement type="city">Fukuoka</settlement>
<region type="province">Kyūshū</region>
<region type="prefecture">Préfecture de Fukuoka</region>
</placeName>
<orgName type="university" n="3">Université de Kyūshū</orgName>
</affiliation>
</author>
</analytic>
<series><title level="j" type="main">IEICE transactions on information and systems</title>
<title level="j" type="abbreviated">IEICE trans. inf. syst.</title>
<idno type="ISSN">0916-8532</idno>
<imprint><date when="2009">2009</date>
</imprint>
</series>
</biblStruct>
</sourceDesc>
<seriesStmt><title level="j" type="main">IEICE transactions on information and systems</title>
<title level="j" type="abbreviated">IEICE trans. inf. syst.</title>
<idno type="ISSN">0916-8532</idno>
</seriesStmt>
</fileDesc>
<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Accuracy</term>
<term>Automatic classification</term>
<term>Database</term>
<term>Mathematical formula</term>
<term>Optical character recognition</term>
<term>Pattern recognition</term>
<term>Printed document</term>
<term>Signal classification</term>
<term>Structural analysis</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr"><term>Classification automatique</term>
<term>Formule mathématique</term>
<term>Document imprimé</term>
<term>Analyse structurale</term>
<term>Reconnaissance optique caractère</term>
<term>Base de données</term>
<term>Précision</term>
<term>Classification signal</term>
<term>Reconnaissance forme</term>
</keywords>
<keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Base de données</term>
</keywords>
</textClass>
</profileDesc>
</teiHeader>
<front><div type="abstract" xml:lang="en">Machine recognition of mathematical expressions on printed documents is not trivial even when all the individual characters and symbols in an expression can be recognized correctly. In this paper, an automatic classification method of spatial relationships between the adjacent symbols in a pair is presented. This classification is important to realize an accurate structure analysis module of math OCR. Experimental results on very large databases showed that this classification worked well with an accuracy of 99.525% by using distribution maps which are defined by two geometric features, relative size and relative position, with careful treatment on document-dependent characteristics.</div>
</front>
</TEI>
<affiliations><list><country><li>Japon</li>
</country>
<region><li>Kyūshū</li>
<li>Préfecture de Fukuoka</li>
</region>
<settlement><li>Fukuoka</li>
</settlement>
<orgName><li>Université de Kyūshū</li>
</orgName>
</list>
<tree><country name="Japon"><region name="Kyūshū"><name sortKey="Aly, Walaa" sort="Aly, Walaa" uniqKey="Aly W" first="Walaa" last="Aly">Walaa Aly</name>
</region>
<name sortKey="Suzuki, Masakazu" sort="Suzuki, Masakazu" uniqKey="Suzuki M" first="Masakazu" last="Suzuki">Masakazu Suzuki (mathématicien)</name>
<name sortKey="Uchida, Seiichi" sort="Uchida, Seiichi" uniqKey="Uchida S" first="Seiichi" last="Uchida">Seiichi Uchida</name>
</country>
</tree>
</affiliations>
</record>

Pour manipuler ce document sous Unix (Dilib)

EXPLOR_STEP=$WICRI_ROOT/Ticri/CIDE/explor/OcrV1/Data/Main/Exploration

HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 000A92 | SxmlIndent | more

HfdSelect -h $EXPLOR_AREA/Data/Main/Exploration/biblio.hfd -nk 000A92 | SxmlIndent | more

Pour mettre un lien sur cette page dans le réseau Wicri

{{Explor lien
   |wiki=    Ticri/CIDE
   |area=    OcrV1
   |flux=    Main
   |étape=   Exploration
   |type=    RBID
   |clé=     Pascal:10-0197905
   |texte=   Automatic Classification of Spatial Relationships among Mathematical Symbols Using Geometric Features
}}

This area was generated with Dilib version V0.6.32.
Data generation: Sat Nov 11 16:53:45 2017. Site generation: Mon Mar 11 23:15:16 2024

	Serveur d'exploration sur l'OCR
	Attention, ce site est en cours de développement ! Attention, site généré par des moyens informatiques à partir de corpus bruts. Les informations ne sont donc pas validées.

Serveur d'exploration sur l'OCR

Automatic Classification of Spatial Relationships among Mathematical Symbols Using Geometric Features

Automatic Classification of Spatial Relationships among Mathematical Symbols Using Geometric Features

Source :

Descripteurs français

English descriptors

Abstract

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

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri