{"id":"https://openalex.org/W1571970705","doi":"https://doi.org/10.1007/978-1-84882-385-3_15","title":"Detection of Singularities in Fingerprint Images Using Linear Phase Portraits","display_name":"Detection of Singularities in Fingerprint Images Using Linear Phase Portraits","publication_year":2009,"publication_date":"2009-01-01","ids":{"openalex":"https://openalex.org/W1571970705","doi":"https://doi.org/10.1007/978-1-84882-385-3_15","mag":"1571970705"},"language":"en","primary_location":{"id":"doi:10.1007/978-1-84882-385-3_15","doi":"https://doi.org/10.1007/978-1-84882-385-3_15","is_oa":false,"landing_page_url":"https://doi.org/10.1007/978-1-84882-385-3_15","pdf_url":null,"source":{"id":"https://openalex.org/S4210191004","display_name":"Advances in pattern recognition","issn_l":"1617-7916","issn":["1617-7916"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core"],"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"book series"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Advances in Pattern Recognition","raw_type":"book-chapter"},"volume":{"id":"https://openalex.org/W1646021195","display_name":"Handbook of Remote Biometrics"},"type":"book-chapter","is_traditional":true,"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/A5078333721","display_name":"Surinder Ram","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I4092182","display_name":"Graz University of Technology","ror":"https://ror.org/00d7xrm67","country_code":"AT","type":"education","lineage":["https://openalex.org/I4092182"]}],"countries":["AT"],"is_corresponding":true,"raw_author_name":"Surinder Ram","raw_affiliation_strings":["Institute for Computer Graphics and Vision, Technical University of Graz, Graz, Austria"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Institute for Computer Graphics and Vision, Technical University of Graz, Graz, Austria","institution_ids":["https://openalex.org/I4092182"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5011359067","display_name":"Horst Bischof","orcid":"https://orcid.org/0000-0002-9096-6671","observed_orcids":["https://orcid.org/0000-0002-9096-6671"]},"institutions":[{"id":"https://openalex.org/I4092182","display_name":"Graz University of Technology","ror":"https://ror.org/00d7xrm67","country_code":"AT","type":"education","lineage":["https://openalex.org/I4092182"]}],"countries":["AT"],"is_corresponding":false,"raw_author_name":"Horst Bischof","raw_affiliation_strings":["Institute for Computer Graphics and Vision, Technical University of Graz, Graz, Austria"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Institute for Computer Graphics and Vision, Technical University of Graz, Graz, Austria","institution_ids":["https://openalex.org/I4092182"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5083353944","display_name":"Josef Birchbauer","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I4210127033","display_name":"Siemens (Austria)","ror":"https://ror.org/03794w632","country_code":"AT","type":"company","lineage":["https://openalex.org/I1325886976","https://openalex.org/I4210127033"]}],"countries":["AT"],"is_corresponding":false,"raw_author_name":"Josef Birchbauer","raw_affiliation_strings":["Siemens Austria, Siemens IT Solutions and Services, Biometrics Center, Graz, Austria"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Siemens Austria, Siemens IT Solutions and Services, Biometrics Center, Graz, Austria","institution_ids":["https://openalex.org/I4210127033"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":["https://openalex.org/A5078333721"],"corresponding_institution_ids":["https://openalex.org/I4092182"],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":1,"citation_normalized_percentile":{"value":0.0,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":88,"max":93},"biblio":{"volume":null,"issue":null,"first_page":"349","last_page":"362"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10828","display_name":"Biometric Identification and Security","score":1.0,"subfield":{"id":"https://openalex.org/subfields/1711","display_name":"Signal Processing"},"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/T10828","display_name":"Biometric Identification and Security","score":1.0,"subfield":{"id":"https://openalex.org/subfields/1711","display_name":"Signal Processing"},"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/T10601","display_name":"Handwritten Text Recognition Techniques","score":0.0,"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/T12740","display_name":"Gait Recognition and Analysis","score":0.0,"subfield":{"id":"https://openalex.org/subfields/2204","display_name":"Biomedical Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/fingerprint-recognition","display_name":"fingerprint recognition","score":0.8650000095367432},{"id":"https://openalex.org/keywords/singularity-detection","display_name":"singularity detection","score":0.906000018119812},{"id":"https://openalex.org/keywords/linear-differential-equations","display_name":"linear differential equations","score":0.675000011920929},{"id":"https://openalex.org/keywords/poincare-index","display_name":"Poincar\u00e9 index","score":0.8939999938011169},{"id":"https://openalex.org/keywords/noise-robustness","display_name":"noise robustness","score":0.8569999933242798},{"id":"https://openalex.org/keywords/model-based-detection","display_name":"model-based detection","score":0.5120000243186951}],"concepts":[{"id":"https://openalex.org/C200917960","wikidata":"https://www.wikidata.org/wiki/Q3847057","display_name":"Singular point of a curve","level":2,"score":0.752243161201477},{"id":"https://openalex.org/C12843","wikidata":"https://www.wikidata.org/wiki/Q201721","display_name":"Gravitational singularity","level":2,"score":0.6669248342514038},{"id":"https://openalex.org/C122283620","wikidata":"https://www.wikidata.org/wiki/Q2532943","display_name":"Phase portrait","level":4,"score":0.6318678855895996},{"id":"https://openalex.org/C28719098","wikidata":"https://www.wikidata.org/wiki/Q44946","display_name":"Point (geometry)","level":2,"score":0.5015735626220703},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.4972842037677765},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.4629972577095032},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.4568219780921936},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.4470783472061157},{"id":"https://openalex.org/C2777826928","wikidata":"https://www.wikidata.org/wiki/Q3745713","display_name":"Fingerprint (computing)","level":2,"score":0.43835312128067017},{"id":"https://openalex.org/C115961682","wikidata":"https://www.wikidata.org/wiki/Q860623","display_name":"Image (mathematics)","level":2,"score":0.41147688031196594},{"id":"https://openalex.org/C158622935","wikidata":"https://www.wikidata.org/wiki/Q660848","display_name":"Nonlinear system","level":2,"score":0.3047651946544647},{"id":"https://openalex.org/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"score":0.16381296515464783},{"id":"https://openalex.org/C2524010","wikidata":"https://www.wikidata.org/wiki/Q8087","display_name":"Geometry","level":1,"score":0.12709644436836243},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.08367720246315002},{"id":"https://openalex.org/C2781349735","wikidata":"https://www.wikidata.org/wiki/Q4904824","display_name":"Bifurcation","level":3,"score":0.0},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1007/978-1-84882-385-3_15","doi":"https://doi.org/10.1007/978-1-84882-385-3_15","is_oa":false,"landing_page_url":"https://doi.org/10.1007/978-1-84882-385-3_15","pdf_url":null,"source":{"id":"https://openalex.org/S4210191004","display_name":"Advances in pattern recognition","issn_l":"1617-7916","issn":["1617-7916"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core"],"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"book series"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Advances in Pattern Recognition","raw_type":"book-chapter"}],"best_oa_location":null,"sustainable_development_goals":[],"study_designs":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":32,"referenced_works":["https://openalex.org/W1569096659","https://openalex.org/W1603495404","https://openalex.org/W1639795441","https://openalex.org/W1890737423","https://openalex.org/W1964443764","https://openalex.org/W1976094843","https://openalex.org/W1980005673","https://openalex.org/W1984998170","https://openalex.org/W1990088088","https://openalex.org/W2016369756","https://openalex.org/W2033819227","https://openalex.org/W2074099635","https://openalex.org/W2081362370","https://openalex.org/W2085261163","https://openalex.org/W2117995429","https://openalex.org/W2118498934","https://openalex.org/W2128978008","https://openalex.org/W2137273147","https://openalex.org/W2142481374","https://openalex.org/W2147382181","https://openalex.org/W2151072234","https://openalex.org/W2162112043","https://openalex.org/W2164585709","https://openalex.org/W2752932982","https://openalex.org/W2798406209","https://openalex.org/W4235656139","https://openalex.org/W4246315877","https://openalex.org/W4256340846","https://openalex.org/W4366726478","https://openalex.org/W6634160276","https://openalex.org/W6677864325","https://openalex.org/W6799558924"],"related_works":["https://openalex.org/W185978188","https://openalex.org/W2356042211","https://openalex.org/W2133791252","https://openalex.org/W2125409069","https://openalex.org/W2093089893","https://openalex.org/W2105183220","https://openalex.org/W2074099635","https://openalex.org/W2619605343","https://openalex.org/W2139248288","https://openalex.org/W2357919105"],"abstract_inverted_index":null,"counts_by_year":[{"year":2019,"cited_by_count":1}],"updated_date":"2026-10-16T09:59:22.235173","created_date":"2016-06-24T00:00:00"}