{"id":"https://openalex.org/W2015617319","doi":"https://doi.org/10.1117/12.911616","title":"Automatic analysis of ciliary beat frequency using optical flow","display_name":"Automatic analysis of ciliary beat frequency using optical flow","publication_year":2012,"publication_date":"2012-01-27","ids":{"openalex":"https://openalex.org/W2015617319","doi":"https://doi.org/10.1117/12.911616","mag":"2015617319"},"language":"en","primary_location":{"is_oa":false,"landing_page_url":"https://doi.org/10.1117/12.911616","pdf_url":null,"source":{"id":"https://openalex.org/S183492911","display_name":"Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE","issn_l":"0277-786X","issn":["0277-786X","1996-756X"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310315543","host_organization_name":"SPIE","host_organization_lineage":["https://openalex.org/P4310315543"],"host_organization_lineage_names":["SPIE"],"type":"journal"},"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false},"type":"article","type_crossref":"proceedings-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/A5068338800","display_name":"Michael Figl","orcid":"https://orcid.org/0000-0002-1745-0871"},"institutions":[{"id":"https://openalex.org/I76134821","display_name":"Medical University of Vienna","ror":"https://ror.org/05n3x4p02","country_code":"AT","type":"education","lineage":["https://openalex.org/I76134821"]}],"countries":["AT"],"is_corresponding":false,"raw_author_name":"Michael Figl","raw_affiliation_strings":["Medical Univ. Vienna (Austria)"],"affiliations":[{"raw_affiliation_string":"Medical Univ. Vienna (Austria)","institution_ids":["https://openalex.org/I76134821"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5077390306","display_name":"Manuel Lechner","orcid":null},"institutions":[{"id":"https://openalex.org/I121760703","display_name":"University of Applied Sciences Technikum Wien","ror":"https://ror.org/04jsx0x49","country_code":"AT","type":"education","lineage":["https://openalex.org/I121760703"]}],"countries":["AT"],"is_corresponding":false,"raw_author_name":"Manuel Lechner","raw_affiliation_strings":["Univ. of Applied Sciences Technikum Wien (Austria)"],"affiliations":[{"raw_affiliation_string":"Univ. of Applied Sciences Technikum Wien (Austria)","institution_ids":["https://openalex.org/I121760703"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5006144884","display_name":"Tobias Werther","orcid":"https://orcid.org/0000-0003-2442-8557"},"institutions":[{"id":"https://openalex.org/I76134821","display_name":"Medical University of Vienna","ror":"https://ror.org/05n3x4p02","country_code":"AT","type":"education","lineage":["https://openalex.org/I76134821"]}],"countries":["AT"],"is_corresponding":false,"raw_author_name":"Tobias Werther","raw_affiliation_strings":["Medical Univ. Vienna (Austria)"],"affiliations":[{"raw_affiliation_string":"Medical Univ. Vienna (Austria)","institution_ids":["https://openalex.org/I76134821"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5073566273","display_name":"F. Hor\u00e5k","orcid":null},"institutions":[{"id":"https://openalex.org/I76134821","display_name":"Medical University of Vienna","ror":"https://ror.org/05n3x4p02","country_code":"AT","type":"education","lineage":["https://openalex.org/I76134821"]}],"countries":["AT"],"is_corresponding":false,"raw_author_name":"Fritz Horak","raw_affiliation_strings":["Medical Univ. Vienna (Austria)"],"affiliations":[{"raw_affiliation_string":"Medical Univ. Vienna (Austria)","institution_ids":["https://openalex.org/I76134821"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5078522964","display_name":"Johann Hummel","orcid":"https://orcid.org/0000-0002-6823-9830"},"institutions":[{"id":"https://openalex.org/I76134821","display_name":"Medical University of Vienna","ror":"https://ror.org/05n3x4p02","country_code":"AT","type":"education","lineage":["https://openalex.org/I76134821"]},{"id":"https://openalex.org/I4210093545","display_name":"Wilhelminen Hospital","ror":"https://ror.org/00qcsrr17","country_code":"AT","type":"healthcare","lineage":["https://openalex.org/I4210093545","https://openalex.org/I4210117134"]}],"countries":["AT"],"is_corresponding":false,"raw_author_name":"Johann Hummel","raw_affiliation_strings":["Medical Univ. Vienna (Austria)","Wilhelminenspital (Austria)"],"affiliations":[{"raw_affiliation_string":"Medical Univ. Vienna (Austria)","institution_ids":["https://openalex.org/I76134821"]},{"raw_affiliation_string":"Wilhelminenspital (Austria)","institution_ids":["https://openalex.org/I4210093545"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5007220929","display_name":"Wolfgang Birkfellner","orcid":"https://orcid.org/0000-0002-1470-2041"},"institutions":[{"id":"https://openalex.org/I76134821","display_name":"Medical University of Vienna","ror":"https://ror.org/05n3x4p02","country_code":"AT","type":"education","lineage":["https://openalex.org/I76134821"]}],"countries":["AT"],"is_corresponding":false,"raw_author_name":"Wolfgang Birkfellner","raw_affiliation_strings":["Medical Univ. Vienna (Austria)"],"affiliations":[{"raw_affiliation_string":"Medical Univ. Vienna (Austria)","institution_ids":["https://openalex.org/I76134821"]}]}],"institution_assertions":[],"countries_distinct_count":1,"institutions_distinct_count":3,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":true,"fulltext_origin":"ngrams","cited_by_count":2,"citation_normalized_percentile":{"value":0.613353,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":72,"max":75},"biblio":{"volume":null,"issue":null,"first_page":null,"last_page":null},"is_retracted":false,"is_paratext":false,"primary_topic":{"id":"https://openalex.org/T11438","display_name":"Detection and Management of Retinal Diseases","score":0.8736,"subfield":{"id":"https://openalex.org/subfields/2741","display_name":"Radiology, Nuclear Medicine and Imaging"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},"topics":[{"id":"https://openalex.org/T11438","display_name":"Detection and Management of Retinal Diseases","score":0.8736,"subfield":{"id":"https://openalex.org/subfields/2741","display_name":"Radiology, Nuclear Medicine and Imaging"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T11184","display_name":"Neonatal Brain Injury and Developmental Consequences","score":0.8292,"subfield":{"id":"https://openalex.org/subfields/2735","display_name":"Pediatrics, Perinatology and Child Health"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T10094","display_name":"Epilepsy and Seizures","score":0.766,"subfield":{"id":"https://openalex.org/subfields/2738","display_name":"Psychiatry and Mental health"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/beat","display_name":"Beat (acoustics)","score":0.5777641},{"id":"https://openalex.org/keywords/image-analysis","display_name":"Image Analysis","score":0.470341},{"id":"https://openalex.org/keywords/optical-flow","display_name":"Optical flow","score":0.43982464}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.76138055},{"id":"https://openalex.org/C45374587","wikidata":"https://www.wikidata.org/wiki/Q12525525","display_name":"Computation","level":2,"score":0.5913633},{"id":"https://openalex.org/C53533937","wikidata":"https://www.wikidata.org/wiki/Q185020","display_name":"Histogram","level":3,"score":0.5900163},{"id":"https://openalex.org/C189809214","wikidata":"https://www.wikidata.org/wiki/Q829522","display_name":"Beat (acoustics)","level":2,"score":0.5777641},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.5395218},{"id":"https://openalex.org/C31972630","wikidata":"https://www.wikidata.org/wiki/Q844240","display_name":"Computer vision","level":1,"score":0.5075358},{"id":"https://openalex.org/C75172450","wikidata":"https://www.wikidata.org/wiki/Q623950","display_name":"Fast Fourier transform","level":2,"score":0.50635827},{"id":"https://openalex.org/C2776502983","wikidata":"https://www.wikidata.org/wiki/Q690182","display_name":"Contrast (vision)","level":2,"score":0.4585907},{"id":"https://openalex.org/C155542232","wikidata":"https://www.wikidata.org/wiki/Q736111","display_name":"Optical flow","level":3,"score":0.43982464},{"id":"https://openalex.org/C102519508","wikidata":"https://www.wikidata.org/wiki/Q6520159","display_name":"Fourier transform","level":2,"score":0.42212632},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.41891095},{"id":"https://openalex.org/C120665830","wikidata":"https://www.wikidata.org/wiki/Q14620","display_name":"Optics","level":1,"score":0.34326455},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.23683792},{"id":"https://openalex.org/C115961682","wikidata":"https://www.wikidata.org/wiki/Q860623","display_name":"Image (mathematics)","level":2,"score":0.2199271},{"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":[{"is_oa":false,"landing_page_url":"https://doi.org/10.1117/12.911616","pdf_url":null,"source":{"id":"https://openalex.org/S183492911","display_name":"Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE","issn_l":"0277-786X","issn":["0277-786X","1996-756X"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310315543","host_organization_name":"SPIE","host_organization_lineage":["https://openalex.org/P4310315543"],"host_organization_lineage_names":["SPIE"],"type":"journal"},"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false}],"best_oa_location":null,"sustainable_development_goals":[{"score":0.45,"display_name":"Peace, justice, and strong institutions","id":"https://metadata.un.org/sdg/16"}],"grants":[],"datasets":[],"versions":[],"referenced_works_count":1,"referenced_works":["https://openalex.org/W2105375033"],"related_works":["https://openalex.org/W4327521644","https://openalex.org/W2978884468","https://openalex.org/W2948041274","https://openalex.org/W2369237035","https://openalex.org/W2274889442","https://openalex.org/W2168413811","https://openalex.org/W2165986314","https://openalex.org/W2087878472","https://openalex.org/W2005846134","https://openalex.org/W1979041948"],"abstract_inverted_index":{"Ciliary":[0],"beat":[1],"frequency":[2,88],"(CBF)":[3],"can":[4],"be":[5,124,184],"a":[6,33,87,178],"useful":[7],"parameter":[8],"for":[9,52],"diagnosis":[10],"of":[11,28,48,108,156,177],"several":[12],"diseases,":[13],"as":[14],"e.g.":[15],"primary":[16],"ciliary":[17],"dyskinesia.":[18],"(PCD).":[19],"CBF":[20],"computation":[21,55],"is":[22],"usually":[23],"done":[24,98],"using":[25,99],"manual":[26],"evaluation":[27],"high":[29,147],"speed":[30],"video":[31],"sequences,":[32],"tedious,":[34],"observer":[35],"dependent,":[36],"and":[37,56,79,84,130,142],"not":[38],"very":[39],"accurate":[40],"procedure.":[41],"We":[42],"used":[43],"the":[44,49,64,74,93,100,114,140,151,154,157,167,174,187,190],"OpenCV's":[45],"pyramidal":[46],"implementation":[47],"Lukas-Kanade":[50],"algorithm":[51],"optical":[53],"flow":[54],"applied":[57],"this":[58],"to":[59,62,91,123,126,172,183],"certain":[60],"objects":[61,67],"follow":[63],"movements.":[65],"The":[66,105,120],"were":[68],"chosen":[69],"by":[70,77,86,113,166],"their":[71],"contrast":[72,148,159],"applying":[73],"corner":[75],"detection":[76],"Shi":[78],"Tomasi.":[80],"Discrimination":[81],"between":[82,128],"background/noise":[83],"cilia":[85,149,160],"histogram":[89],"allowed":[90],"compute":[92],"CBF.":[94],"Frequency":[95],"analysis":[96],"was":[97,111],"Fourier":[101,109],"transform":[102],"in":[103,116,137,144,150,186],"matlab.":[104],"correct":[106,175],"number":[107],"summands":[110],"found":[112,185],"slope":[115,191],"an":[117,169],"approximation":[118],"curve.":[119],"method":[121],"showed":[122],"usable":[125],"distinguish":[127,173],"healthy":[129],"diseased":[131],"samples.":[132],"However":[133],"there":[134],"remain":[135],"difficulties":[136],"automatically":[138],"identifying":[139],"cilia,":[141],"also":[143],"finding":[145],"enough":[146],"image.":[152],"Furthermore":[153],"some":[155],"higher":[158],"are":[161],"lost":[162],"(and":[163],"sometimes":[164],"found)":[165],"method,":[168],"easy":[170],"way":[171],"sub-path":[176],"point's":[179],"path":[180],"have":[181],"yet":[182],"case":[188],"where":[189],"methods":[192],"doesn't":[193],"work.":[194]},"cited_by_api_url":"https://api.openalex.org/works?filter=cites:W2015617319","counts_by_year":[{"year":2024,"cited_by_count":1},{"year":2017,"cited_by_count":1}],"updated_date":"2024-11-28T12:31:00.423264","created_date":"2016-06-24"}
