{"id":"https://openalex.org/W2147406910","doi":"https://doi.org/10.1109/icdar.2003.1227689","title":"Digit classification on signboards for telephone number recognition","display_name":"Digit classification on signboards for telephone number recognition","publication_year":2004,"publication_date":"2004-03-02","ids":{"openalex":"https://openalex.org/W2147406910","doi":"https://doi.org/10.1109/icdar.2003.1227689","mag":"2147406910"},"language":"en","primary_location":{"id":"doi:10.1109/icdar.2003.1227689","is_oa":false,"landing_page_url":"https://doi.org/10.1109/icdar.2003.1227689","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Seventh International Conference on Document Analysis and Recognition, 2003. Proceedings.","raw_type":"proceedings-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5010842493","display_name":"Takuma Yamaguchi","orcid":"https://orcid.org/0000-0002-6754-020X"},"institutions":[{"id":"https://openalex.org/I137975476","display_name":"Shinshu University","ror":"https://ror.org/0244rem06","country_code":"JP","type":"education","lineage":["https://openalex.org/I137975476"]}],"countries":["JP"],"is_corresponding":true,"raw_author_name":"T. Yamaguchi","raw_affiliation_strings":["Department of Information Engineering, Shinshu University, Nagano, Japan","Department of Information Engineering,, Shinshu University,, Nagano, Japan"],"affiliations":[{"raw_affiliation_string":"Department of Information Engineering, Shinshu University, Nagano, Japan","institution_ids":["https://openalex.org/I137975476"]},{"raw_affiliation_string":"Department of Information Engineering,, Shinshu University,, Nagano, Japan","institution_ids":["https://openalex.org/I137975476"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5072375904","display_name":"Yuya Nakano","orcid":"https://orcid.org/0000-0002-4154-5467"},"institutions":[{"id":"https://openalex.org/I199028557","display_name":"Kyushu Sangyo University","ror":"https://ror.org/01wqrpc44","country_code":"JP","type":"education","lineage":["https://openalex.org/I199028557"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Y. Nakano","raw_affiliation_strings":["Kyushu Sangyo University, Fukuoka, Japan","Kyushu Sangyo University"],"affiliations":[{"raw_affiliation_string":"Kyushu Sangyo University, Fukuoka, Japan","institution_ids":["https://openalex.org/I199028557"]},{"raw_affiliation_string":"Kyushu Sangyo University","institution_ids":["https://openalex.org/I199028557"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5050979241","display_name":"Minoru Maruyama","orcid":"https://orcid.org/0000-0002-6406-0649"},"institutions":[{"id":"https://openalex.org/I4210162928","display_name":"\u014ctani University","ror":"https://ror.org/05b7rex33","country_code":"JP","type":"education","lineage":["https://openalex.org/I4210162928"]},{"id":"https://openalex.org/I137975476","display_name":"Shinshu University","ror":"https://ror.org/0244rem06","country_code":"JP","type":"education","lineage":["https://openalex.org/I137975476"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"M. Maruyama","raw_affiliation_strings":["Department of Information Engineering, Shinshu University, Nagano, Japan","Shinshu University"],"affiliations":[{"raw_affiliation_string":"Department of Information Engineering, Shinshu University, Nagano, Japan","institution_ids":["https://openalex.org/I137975476"]},{"raw_affiliation_string":"Shinshu University","institution_ids":["https://openalex.org/I4210162928"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5020482990","display_name":"Hidetoshi Miyao","orcid":"https://orcid.org/0000-0002-7937-4894"},"institutions":[{"id":"https://openalex.org/I137975476","display_name":"Shinshu University","ror":"https://ror.org/0244rem06","country_code":"JP","type":"education","lineage":["https://openalex.org/I137975476"]},{"id":"https://openalex.org/I4210162928","display_name":"\u014ctani University","ror":"https://ror.org/05b7rex33","country_code":"JP","type":"education","lineage":["https://openalex.org/I4210162928"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"H. Miyao","raw_affiliation_strings":["Department of Information Engineering, Shinshu University, Nagano, Japan","Shinshu University"],"affiliations":[{"raw_affiliation_string":"Department of Information Engineering, Shinshu University, Nagano, Japan","institution_ids":["https://openalex.org/I137975476"]},{"raw_affiliation_string":"Shinshu University","institution_ids":["https://openalex.org/I4210162928"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5053474627","display_name":"Toshihiro Hananoi","orcid":null},"institutions":[{"id":"https://openalex.org/I199028557","display_name":"Kyushu Sangyo University","ror":"https://ror.org/01wqrpc44","country_code":"JP","type":"education","lineage":["https://openalex.org/I199028557"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"T. Hananoi","raw_affiliation_strings":["Kyushu Sangyo University, Fukuoka, Japan","Kyushu Sangyo University"],"affiliations":[{"raw_affiliation_string":"Kyushu Sangyo University, Fukuoka, Japan","institution_ids":["https://openalex.org/I199028557"]},{"raw_affiliation_string":"Kyushu Sangyo University","institution_ids":["https://openalex.org/I199028557"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":5,"corresponding_author_ids":["https://openalex.org/A5010842493"],"corresponding_institution_ids":["https://openalex.org/I137975476"],"apc_list":null,"apc_paid":null,"fwci":2.7587,"has_fulltext":false,"cited_by_count":32,"citation_normalized_percentile":{"value":0.91123502,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":89,"max":97},"biblio":{"volume":"1","issue":null,"first_page":"359","last_page":"363"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10601","display_name":"Handwritten Text Recognition Techniques","score":0.9998000264167786,"subfield":{"id":"https://openalex.org/subfields/1707","display_name":"Computer Vision and Pattern Recognition"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10601","display_name":"Handwritten Text Recognition Techniques","score":0.9998000264167786,"subfield":{"id":"https://openalex.org/subfields/1707","display_name":"Computer Vision and Pattern Recognition"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T12707","display_name":"Vehicle License Plate Recognition","score":0.9976000189781189,"subfield":{"id":"https://openalex.org/subfields/2214","display_name":"Media Technology"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10627","display_name":"Advanced Image and Video Retrieval Techniques","score":0.996999979019165,"subfield":{"id":"https://openalex.org/subfields/1707","display_name":"Computer Vision and Pattern Recognition"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/numerical-digit","display_name":"Numerical digit","score":0.8589012622833252},{"id":"https://openalex.org/keywords/skew","display_name":"Skew","score":0.8244425058364868},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.5654247999191284},{"id":"https://openalex.org/keywords/pattern-recognition","display_name":"Pattern recognition (psychology)","score":0.5566043257713318},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.5471115112304688},{"id":"https://openalex.org/keywords/telephone-number","display_name":"Telephone number","score":0.5066290497779846},{"id":"https://openalex.org/keywords/digit-recognition","display_name":"Digit recognition","score":0.49799251556396484},{"id":"https://openalex.org/keywords/hough-transform","display_name":"Hough transform","score":0.45476797223091125},{"id":"https://openalex.org/keywords/enhanced-data-rates-for-gsm-evolution","display_name":"Enhanced Data Rates for GSM Evolution","score":0.449337899684906},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.40567222237586975},{"id":"https://openalex.org/keywords/computer-vision","display_name":"Computer vision","score":0.37685513496398926},{"id":"https://openalex.org/keywords/arithmetic","display_name":"Arithmetic","score":0.3164994418621063},{"id":"https://openalex.org/keywords/image","display_name":"Image (mathematics)","score":0.29090315103530884},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.08783283829689026},{"id":"https://openalex.org/keywords/artificial-neural-network","display_name":"Artificial neural network","score":0.08283525705337524}],"concepts":[{"id":"https://openalex.org/C94957134","wikidata":"https://www.wikidata.org/wiki/Q82990","display_name":"Numerical digit","level":2,"score":0.8589012622833252},{"id":"https://openalex.org/C43711488","wikidata":"https://www.wikidata.org/wiki/Q7534783","display_name":"Skew","level":2,"score":0.8244425058364868},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.5654247999191284},{"id":"https://openalex.org/C153180895","wikidata":"https://www.wikidata.org/wiki/Q7148389","display_name":"Pattern recognition (psychology)","level":2,"score":0.5566043257713318},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.5471115112304688},{"id":"https://openalex.org/C176484874","wikidata":"https://www.wikidata.org/wiki/Q7696507","display_name":"Telephone number","level":2,"score":0.5066290497779846},{"id":"https://openalex.org/C2984784707","wikidata":"https://www.wikidata.org/wiki/Q167555","display_name":"Digit recognition","level":3,"score":0.49799251556396484},{"id":"https://openalex.org/C200518788","wikidata":"https://www.wikidata.org/wiki/Q195076","display_name":"Hough transform","level":3,"score":0.45476797223091125},{"id":"https://openalex.org/C162307627","wikidata":"https://www.wikidata.org/wiki/Q204833","display_name":"Enhanced Data Rates for GSM Evolution","level":2,"score":0.449337899684906},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.40567222237586975},{"id":"https://openalex.org/C31972630","wikidata":"https://www.wikidata.org/wiki/Q844240","display_name":"Computer vision","level":1,"score":0.37685513496398926},{"id":"https://openalex.org/C94375191","wikidata":"https://www.wikidata.org/wiki/Q11205","display_name":"Arithmetic","level":1,"score":0.3164994418621063},{"id":"https://openalex.org/C115961682","wikidata":"https://www.wikidata.org/wiki/Q860623","display_name":"Image (mathematics)","level":2,"score":0.29090315103530884},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.08783283829689026},{"id":"https://openalex.org/C50644808","wikidata":"https://www.wikidata.org/wiki/Q192776","display_name":"Artificial neural network","level":2,"score":0.08283525705337524},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1109/icdar.2003.1227689","is_oa":false,"landing_page_url":"https://doi.org/10.1109/icdar.2003.1227689","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Seventh International Conference on Document Analysis and Recognition, 2003. Proceedings.","raw_type":"proceedings-article"},{"id":"pmh:oai:CiteSeerX.psu:10.1.1.1.3144","is_oa":false,"landing_page_url":"http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1.3144","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"http://www.csc.liv.ac.uk/%7Eprima/ICDAR2003/Papers/0065_568_yamaguchi_t.pdf","raw_type":"text"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":9,"referenced_works":["https://openalex.org/W1600270397","https://openalex.org/W1964704927","https://openalex.org/W1989165405","https://openalex.org/W2099735223","https://openalex.org/W2107918262","https://openalex.org/W2124835099","https://openalex.org/W2143786659","https://openalex.org/W6635746860","https://openalex.org/W6678738978"],"related_works":["https://openalex.org/W2354863620","https://openalex.org/W2891733042","https://openalex.org/W4285771710","https://openalex.org/W2993118855","https://openalex.org/W2039918769","https://openalex.org/W2911525106","https://openalex.org/W2736239746","https://openalex.org/W2169083538","https://openalex.org/W1973178549","https://openalex.org/W2397763568"],"abstract_inverted_index":{"This":[0],"paper":[1],"presents":[2],"a":[3,76,88,95],"digit":[4,89,97],"classification":[5],"system":[6],"to":[7],"recognize":[8],"telephone":[9],"numbers":[10],"written":[11],"on":[12],"signboards.":[13],"Candidate":[14],"regions":[15],"of":[16,66,78,81,92,100],"digits":[17,31,41,68],"are":[18,42],"extracted":[19],"from":[20],"an":[21],"image":[22],"through":[23],"edge":[24],"extraction,":[25],"enhancement":[26],"and":[27,38,47,58,94],"labeling.":[28],"Since":[29],"the":[30,33,40,45,52,59,64],"in":[32],"images":[34,80],"often":[35],"have":[36],"skew":[37,46],"slant,":[39],"recognized":[43],"after":[44],"slant":[48,60],"correction.":[49],"To":[50],"correct":[51,96],"skew,":[53],"Hough":[54],"transform":[55],"is":[56,61],"used,":[57],"corrected":[62],"using":[63],"method":[65],"circumscribing":[67],"with":[69,83],"tilted":[70],"rectangles.":[71],"In":[72],"experiments,":[73],"we":[74],"tested":[75],"total":[77],"1332":[79],"signboards":[82],"11939":[84],"digits.":[85],"We":[86],"obtained":[87],"extraction":[90],"rate":[91,99],"99.2%":[93],"recognition":[98],"98.8%.":[101]},"counts_by_year":[{"year":2024,"cited_by_count":1},{"year":2023,"cited_by_count":1},{"year":2020,"cited_by_count":1},{"year":2019,"cited_by_count":3},{"year":2018,"cited_by_count":1},{"year":2016,"cited_by_count":2},{"year":2014,"cited_by_count":3},{"year":2012,"cited_by_count":2}],"updated_date":"2026-04-04T16:13:02.066488","created_date":"2025-10-10T00:00:00"}
