{"id":"https://openalex.org/W2075612081","doi":"https://doi.org/10.1016/s0923-5965(02)00078-4","title":"Facial animation parameters extraction and expression recognition using Hidden Markov Models","display_name":"Facial animation parameters extraction and expression recognition using Hidden Markov Models","publication_year":2002,"publication_date":"2002-10-01","ids":{"openalex":"https://openalex.org/W2075612081","doi":"https://doi.org/10.1016/s0923-5965(02)00078-4","mag":"2075612081"},"language":"en","primary_location":{"id":"doi:10.1016/s0923-5965(02)00078-4","is_oa":false,"landing_page_url":"https://doi.org/10.1016/s0923-5965(02)00078-4","pdf_url":null,"source":{"id":"https://openalex.org/S38090728","display_name":"Signal Processing Image Communication","issn_l":"0923-5965","issn":["0923-5965","1879-2677"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310320990","host_organization_name":"Elsevier BV","host_organization_lineage":["https://openalex.org/P4310320990"],"host_organization_lineage_names":["Elsevier BV"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Signal Processing: Image Communication","raw_type":"journal-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/A5016194141","display_name":"Montse Pard\u00e0s","orcid":"https://orcid.org/0000-0002-5861-6356"},"institutions":[{"id":"https://openalex.org/I9617848","display_name":"Universitat Polit\u00e8cnica de Catalunya","ror":"https://ror.org/03mb6wj31","country_code":"ES","type":"education","lineage":["https://openalex.org/I9617848"]}],"countries":["ES"],"is_corresponding":true,"raw_author_name":"Montse Pard\u00e0s","raw_affiliation_strings":["Department of Signal Theory and Communications, Universitat Polit\u00e8cnica de Catalunya, C/Jordi Girona 1-3, D-5, 08034 Barcelona, Spain"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Signal Theory and Communications, Universitat Polit\u00e8cnica de Catalunya, C/Jordi Girona 1-3, D-5, 08034 Barcelona, Spain","institution_ids":["https://openalex.org/I9617848"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5000405202","display_name":"Antonio Bonafonte","orcid":"https://orcid.org/0000-0002-6240-9915"},"institutions":[{"id":"https://openalex.org/I9617848","display_name":"Universitat Polit\u00e8cnica de Catalunya","ror":"https://ror.org/03mb6wj31","country_code":"ES","type":"education","lineage":["https://openalex.org/I9617848"]}],"countries":["ES"],"is_corresponding":false,"raw_author_name":"Antonio Bonafonte","raw_affiliation_strings":["Department of Signal Theory and Communications, Universitat Polit\u00e8cnica de Catalunya, C/Jordi Girona 1-3, D-5, 08034 Barcelona, Spain"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Signal Theory and Communications, Universitat Polit\u00e8cnica de Catalunya, C/Jordi Girona 1-3, D-5, 08034 Barcelona, Spain","institution_ids":["https://openalex.org/I9617848"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":["https://openalex.org/A5016194141"],"corresponding_institution_ids":["https://openalex.org/I9617848"],"apc_list":{"value":2330,"currency":"USD","value_usd":2330},"apc_paid":null,"fwci":0.9234,"has_fulltext":false,"cited_by_count":81,"citation_normalized_percentile":{"value":0.75214904,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":99},"biblio":{"volume":"17","issue":"9","first_page":"675","last_page":"688"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11448","display_name":"Face recognition and analysis","score":0.9994000196456909,"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/T11448","display_name":"Face recognition and analysis","score":0.9994000196456909,"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/T10057","display_name":"Face and Expression Recognition","score":0.9975000023841858,"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/T10824","display_name":"Image Retrieval and Classification Techniques","score":0.9936000108718872,"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/computer-science","display_name":"Computer science","score":0.7585036754608154},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.70487380027771},{"id":"https://openalex.org/keywords/hidden-markov-model","display_name":"Hidden Markov model","score":0.6879203915596008},{"id":"https://openalex.org/keywords/principal-component-analysis","display_name":"Principal component analysis","score":0.6445642709732056},{"id":"https://openalex.org/keywords/classifier","display_name":"Classifier (UML)","score":0.6044766902923584},{"id":"https://openalex.org/keywords/pattern-recognition","display_name":"Pattern recognition (psychology)","score":0.5707101225852966},{"id":"https://openalex.org/keywords/motion-analysis","display_name":"Motion analysis","score":0.5507104992866516},{"id":"https://openalex.org/keywords/facial-expression","display_name":"Facial expression","score":0.5322242975234985},{"id":"https://openalex.org/keywords/animation","display_name":"Animation","score":0.5286655426025391},{"id":"https://openalex.org/keywords/markov-chain","display_name":"Markov chain","score":0.5143026113510132},{"id":"https://openalex.org/keywords/computer-vision","display_name":"Computer vision","score":0.4834950268268585},{"id":"https://openalex.org/keywords/expression","display_name":"Expression (computer science)","score":0.472226619720459},{"id":"https://openalex.org/keywords/machine-learning","display_name":"Machine learning","score":0.13967454433441162},{"id":"https://openalex.org/keywords/computer-graphics","display_name":"Computer graphics (images)","score":0.10889327526092529}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7585036754608154},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.70487380027771},{"id":"https://openalex.org/C23224414","wikidata":"https://www.wikidata.org/wiki/Q176769","display_name":"Hidden Markov model","level":2,"score":0.6879203915596008},{"id":"https://openalex.org/C27438332","wikidata":"https://www.wikidata.org/wiki/Q2873","display_name":"Principal component analysis","level":2,"score":0.6445642709732056},{"id":"https://openalex.org/C95623464","wikidata":"https://www.wikidata.org/wiki/Q1096149","display_name":"Classifier (UML)","level":2,"score":0.6044766902923584},{"id":"https://openalex.org/C153180895","wikidata":"https://www.wikidata.org/wiki/Q7148389","display_name":"Pattern recognition (psychology)","level":2,"score":0.5707101225852966},{"id":"https://openalex.org/C2777036941","wikidata":"https://www.wikidata.org/wiki/Q6917771","display_name":"Motion analysis","level":2,"score":0.5507104992866516},{"id":"https://openalex.org/C195704467","wikidata":"https://www.wikidata.org/wiki/Q327968","display_name":"Facial expression","level":2,"score":0.5322242975234985},{"id":"https://openalex.org/C502989409","wikidata":"https://www.wikidata.org/wiki/Q11425","display_name":"Animation","level":2,"score":0.5286655426025391},{"id":"https://openalex.org/C98763669","wikidata":"https://www.wikidata.org/wiki/Q176645","display_name":"Markov chain","level":2,"score":0.5143026113510132},{"id":"https://openalex.org/C31972630","wikidata":"https://www.wikidata.org/wiki/Q844240","display_name":"Computer vision","level":1,"score":0.4834950268268585},{"id":"https://openalex.org/C90559484","wikidata":"https://www.wikidata.org/wiki/Q778379","display_name":"Expression (computer science)","level":2,"score":0.472226619720459},{"id":"https://openalex.org/C119857082","wikidata":"https://www.wikidata.org/wiki/Q2539","display_name":"Machine learning","level":1,"score":0.13967454433441162},{"id":"https://openalex.org/C121684516","wikidata":"https://www.wikidata.org/wiki/Q7600677","display_name":"Computer graphics (images)","level":1,"score":0.10889327526092529},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1016/s0923-5965(02)00078-4","is_oa":false,"landing_page_url":"https://doi.org/10.1016/s0923-5965(02)00078-4","pdf_url":null,"source":{"id":"https://openalex.org/S38090728","display_name":"Signal Processing Image Communication","issn_l":"0923-5965","issn":["0923-5965","1879-2677"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310320990","host_organization_name":"Elsevier BV","host_organization_lineage":["https://openalex.org/P4310320990"],"host_organization_lineage_names":["Elsevier BV"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Signal Processing: Image Communication","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":31,"referenced_works":["https://openalex.org/W1509031088","https://openalex.org/W1511103465","https://openalex.org/W1516846298","https://openalex.org/W1537382290","https://openalex.org/W1548360242","https://openalex.org/W1588539311","https://openalex.org/W1605081868","https://openalex.org/W1992141392","https://openalex.org/W2009266235","https://openalex.org/W2053860618","https://openalex.org/W2069674882","https://openalex.org/W2088153921","https://openalex.org/W2098790470","https://openalex.org/W2101393962","https://openalex.org/W2104095591","https://openalex.org/W2108496475","https://openalex.org/W2125127226","https://openalex.org/W2125675458","https://openalex.org/W2125838338","https://openalex.org/W2131910503","https://openalex.org/W2133566984","https://openalex.org/W2136706845","https://openalex.org/W2152826865","https://openalex.org/W2159017231","https://openalex.org/W2159173611","https://openalex.org/W2159315158","https://openalex.org/W2161336753","https://openalex.org/W2168341643","https://openalex.org/W2339343773","https://openalex.org/W2911336608","https://openalex.org/W3141774725"],"related_works":["https://openalex.org/W2364370872","https://openalex.org/W2053269318","https://openalex.org/W2025614924","https://openalex.org/W1975632186","https://openalex.org/W2294335174","https://openalex.org/W2097963413","https://openalex.org/W1591475660","https://openalex.org/W3027745756","https://openalex.org/W3205213561","https://openalex.org/W2001275470"],"abstract_inverted_index":null,"counts_by_year":[{"year":2025,"cited_by_count":1},{"year":2023,"cited_by_count":3},{"year":2022,"cited_by_count":4},{"year":2021,"cited_by_count":1},{"year":2020,"cited_by_count":4},{"year":2019,"cited_by_count":6},{"year":2018,"cited_by_count":7},{"year":2017,"cited_by_count":2},{"year":2016,"cited_by_count":1},{"year":2015,"cited_by_count":1},{"year":2014,"cited_by_count":6},{"year":2013,"cited_by_count":6},{"year":2012,"cited_by_count":6}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}