{"id":"https://openalex.org/W2016930280","doi":"https://doi.org/10.1109/icb.2012.6199824","title":"Human identification from at-a-distance face images using sparse representation of local iris features","display_name":"Human identification from at-a-distance face images using sparse representation of local iris features","publication_year":2012,"publication_date":"2012-03-01","ids":{"openalex":"https://openalex.org/W2016930280","doi":"https://doi.org/10.1109/icb.2012.6199824","mag":"2016930280"},"language":"en","primary_location":{"id":"doi:10.1109/icb.2012.6199824","is_oa":false,"landing_page_url":"https://doi.org/10.1109/icb.2012.6199824","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2012 5th IAPR International Conference on Biometrics (ICB)","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/A5051203367","display_name":"Ajay Kumar","orcid":"https://orcid.org/0000-0002-3761-2436"},"institutions":[{"id":"https://openalex.org/I14243506","display_name":"Hong Kong Polytechnic University","ror":"https://ror.org/0030zas98","country_code":"HK","type":"education","lineage":["https://openalex.org/I14243506"]}],"countries":["HK"],"is_corresponding":true,"raw_author_name":"Ajay Kumar","raw_affiliation_strings":["Department of Computing, Hong Kong Polytechnic University, Kowloon, Hong Kong, China","Department of computing, The Hong Kong Polytechnic University, Kowloon, Hong Kong"],"affiliations":[{"raw_affiliation_string":"Department of Computing, Hong Kong Polytechnic University, Kowloon, Hong Kong, China","institution_ids":["https://openalex.org/I14243506"]},{"raw_affiliation_string":"Department of computing, The Hong Kong Polytechnic University, Kowloon, Hong Kong","institution_ids":["https://openalex.org/I14243506"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5068325856","display_name":"Tak-Shing Chan","orcid":"https://orcid.org/0000-0002-8302-3974"},"institutions":[{"id":"https://openalex.org/I14243506","display_name":"Hong Kong Polytechnic University","ror":"https://ror.org/0030zas98","country_code":"HK","type":"education","lineage":["https://openalex.org/I14243506"]}],"countries":["HK"],"is_corresponding":false,"raw_author_name":"Tak-Shing Chan","raw_affiliation_strings":["Department of Computing, Hong Kong Polytechnic University, Kowloon, Hong Kong, China","Department of computing, The Hong Kong Polytechnic University, Kowloon, Hong Kong"],"affiliations":[{"raw_affiliation_string":"Department of Computing, Hong Kong Polytechnic University, Kowloon, Hong Kong, China","institution_ids":["https://openalex.org/I14243506"]},{"raw_affiliation_string":"Department of computing, The Hong Kong Polytechnic University, Kowloon, Hong Kong","institution_ids":["https://openalex.org/I14243506"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5065224542","display_name":"Chun-Wei Tan","orcid":null},"institutions":[{"id":"https://openalex.org/I14243506","display_name":"Hong Kong Polytechnic University","ror":"https://ror.org/0030zas98","country_code":"HK","type":"education","lineage":["https://openalex.org/I14243506"]}],"countries":["HK"],"is_corresponding":false,"raw_author_name":"Chun-Wei Tan","raw_affiliation_strings":["Department of Computing, Hong Kong Polytechnic University, Kowloon, Hong Kong, China","Department of computing, The Hong Kong Polytechnic University, Kowloon, Hong Kong"],"affiliations":[{"raw_affiliation_string":"Department of Computing, Hong Kong Polytechnic University, Kowloon, Hong Kong, China","institution_ids":["https://openalex.org/I14243506"]},{"raw_affiliation_string":"Department of computing, The Hong Kong Polytechnic University, Kowloon, Hong Kong","institution_ids":["https://openalex.org/I14243506"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":3,"corresponding_author_ids":["https://openalex.org/A5051203367"],"corresponding_institution_ids":["https://openalex.org/I14243506"],"apc_list":null,"apc_paid":null,"fwci":2.6933,"has_fulltext":false,"cited_by_count":34,"citation_normalized_percentile":{"value":0.92498071,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":89,"max":98},"biblio":{"volume":null,"issue":null,"first_page":"303","last_page":"309"},"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/T10057","display_name":"Face and Expression Recognition","score":0.944599986076355,"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":0.9171000123023987,"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/artificial-intelligence","display_name":"Artificial intelligence","score":0.80795818567276},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.7071199417114258},{"id":"https://openalex.org/keywords/iris-recognition","display_name":"Iris recognition","score":0.643561840057373},{"id":"https://openalex.org/keywords/computer-vision","display_name":"Computer vision","score":0.6422125101089478},{"id":"https://openalex.org/keywords/pattern-recognition","display_name":"Pattern recognition (psychology)","score":0.6188946962356567},{"id":"https://openalex.org/keywords/segmentation","display_name":"Segmentation","score":0.5159404873847961},{"id":"https://openalex.org/keywords/feature-extraction","display_name":"Feature extraction","score":0.5058831572532654},{"id":"https://openalex.org/keywords/filter","display_name":"Filter (signal processing)","score":0.49067771434783936},{"id":"https://openalex.org/keywords/sparse-approximation","display_name":"Sparse approximation","score":0.4751826822757721},{"id":"https://openalex.org/keywords/gabor-filter","display_name":"Gabor filter","score":0.4590238034725189},{"id":"https://openalex.org/keywords/biometrics","display_name":"Biometrics","score":0.44815951585769653},{"id":"https://openalex.org/keywords/facial-recognition-system","display_name":"Facial recognition system","score":0.4228053092956543},{"id":"https://openalex.org/keywords/image-segmentation","display_name":"Image segmentation","score":0.42275550961494446}],"concepts":[{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.80795818567276},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7071199417114258},{"id":"https://openalex.org/C112356035","wikidata":"https://www.wikidata.org/wiki/Q1672722","display_name":"Iris recognition","level":3,"score":0.643561840057373},{"id":"https://openalex.org/C31972630","wikidata":"https://www.wikidata.org/wiki/Q844240","display_name":"Computer vision","level":1,"score":0.6422125101089478},{"id":"https://openalex.org/C153180895","wikidata":"https://www.wikidata.org/wiki/Q7148389","display_name":"Pattern recognition (psychology)","level":2,"score":0.6188946962356567},{"id":"https://openalex.org/C89600930","wikidata":"https://www.wikidata.org/wiki/Q1423946","display_name":"Segmentation","level":2,"score":0.5159404873847961},{"id":"https://openalex.org/C52622490","wikidata":"https://www.wikidata.org/wiki/Q1026626","display_name":"Feature extraction","level":2,"score":0.5058831572532654},{"id":"https://openalex.org/C106131492","wikidata":"https://www.wikidata.org/wiki/Q3072260","display_name":"Filter (signal processing)","level":2,"score":0.49067771434783936},{"id":"https://openalex.org/C124066611","wikidata":"https://www.wikidata.org/wiki/Q28684319","display_name":"Sparse approximation","level":2,"score":0.4751826822757721},{"id":"https://openalex.org/C2779883129","wikidata":"https://www.wikidata.org/wiki/Q2447890","display_name":"Gabor filter","level":3,"score":0.4590238034725189},{"id":"https://openalex.org/C184297639","wikidata":"https://www.wikidata.org/wiki/Q177765","display_name":"Biometrics","level":2,"score":0.44815951585769653},{"id":"https://openalex.org/C31510193","wikidata":"https://www.wikidata.org/wiki/Q1192553","display_name":"Facial recognition system","level":3,"score":0.4228053092956543},{"id":"https://openalex.org/C124504099","wikidata":"https://www.wikidata.org/wiki/Q56933","display_name":"Image segmentation","level":3,"score":0.42275550961494446}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1109/icb.2012.6199824","is_oa":false,"landing_page_url":"https://doi.org/10.1109/icb.2012.6199824","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2012 5th IAPR International Conference on Biometrics (ICB)","raw_type":"proceedings-article"},{"id":"pmh:oai:ira.lib.polyu.edu.hk:10397/37696","is_oa":false,"landing_page_url":"http://hdl.handle.net/10397/37696","pdf_url":null,"source":{"id":"https://openalex.org/S4306400205","display_name":"PolyU Institutional Research Archive (Hong Kong Polytechnic University)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I14243506","host_organization_name":"Hong Kong Polytechnic University","host_organization_lineage":["https://openalex.org/I14243506"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"Conference Paper"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":21,"referenced_works":["https://openalex.org/W1974821667","https://openalex.org/W1985110735","https://openalex.org/W2009073259","https://openalex.org/W2023809816","https://openalex.org/W2025546194","https://openalex.org/W2057352808","https://openalex.org/W2068424163","https://openalex.org/W2076421881","https://openalex.org/W2078767000","https://openalex.org/W2093433254","https://openalex.org/W2100556411","https://openalex.org/W2118435112","https://openalex.org/W2119416456","https://openalex.org/W2127011353","https://openalex.org/W2129812935","https://openalex.org/W2144148034","https://openalex.org/W2152690956","https://openalex.org/W2168567026","https://openalex.org/W2169096120","https://openalex.org/W2172128630","https://openalex.org/W2606090080"],"related_works":["https://openalex.org/W2018223046","https://openalex.org/W2294693339","https://openalex.org/W2774310452","https://openalex.org/W1971649232","https://openalex.org/W2573408845","https://openalex.org/W231692020","https://openalex.org/W3092387234","https://openalex.org/W2024700913","https://openalex.org/W2891686872","https://openalex.org/W2349802214"],"abstract_inverted_index":{"Automated":[0],"human":[1],"identification":[2],"at-a-distance,":[3],"using":[4,25,84,135],"completely":[5],"automated":[6,76],"iris":[7,82,98,121,130],"segmentation,":[8],"is":[9,112],"highly":[10,169],"challenging":[11],"and":[12,18,27,33,44,66,123,140,158,171],"has":[13],"wide":[14],"range":[15],"of":[16,87,175],"civilian":[17],"forensics":[19],"applications.":[20],"Iris":[21],"images":[22,83,131],"acquired":[23,81,129],"at-a-distance":[24,166],"visible":[26],"infrared":[28],"imaging":[29],"are":[30,52,60,132,149,168],"often":[31],"noisy":[32],"suffer":[34],"from":[35,41,78],"divergent":[36],"spectral":[37,45],"changes":[38,65],"largely":[39],"resulting":[40],"scattering,":[42],"albedo":[43],"absorbance":[46],"selectivity.":[47],"Therefore":[48],"further":[49],"research":[50],"efforts":[51],"required":[53],"to":[54,63],"develop":[55],"feature":[56],"extraction":[57],"techniques":[58],"which":[59,111],"more":[61],"tolerant":[62],"illumination":[64],"noise.":[67],"This":[68],"paper":[69],"develops":[70],"a":[71],"new":[72],"approach":[73],"for":[74,126],"the":[75,97,127,152,173,176],"recognition":[77,122],"such":[79],"distantly":[80,128],"sparse":[85,102],"representation":[86,99],"local":[88],"Radon":[89],"transform":[90],"(LRT)":[91],"based":[92,105,144],"orientation":[93],"features.":[94],"We":[95],"model":[96],"problem":[100],"as":[101],"coding":[103],"solution":[104],"on":[106,151,165],"computationally":[107],"efficient":[108],"LRT":[109],"dictionary":[110],"solved":[113],"by":[114],"widely":[115],"studied":[116],"convex":[117],"optimization":[118],"approach/strategy.":[119],"The":[120,146,161],"verification":[124],"performance":[125],"also":[133],"evaluated":[134],"baseline":[136],"1-D":[137],"log-Gabor":[138,142],"filter":[139,143],"monogenic":[141],"approach.":[145,177],"experimental":[147,163],"results":[148,164],"reported":[150],"publically":[153],"available":[154],"UBIRIS":[155],"V2,":[156],"FRGC":[157],"CASIAV4-distance":[159],"databases.":[160],"achieved":[162],"databases":[167],"promising":[170],"confirm":[172],"usefulness":[174]},"counts_by_year":[{"year":2025,"cited_by_count":1},{"year":2024,"cited_by_count":2},{"year":2022,"cited_by_count":1},{"year":2020,"cited_by_count":1},{"year":2019,"cited_by_count":5},{"year":2018,"cited_by_count":5},{"year":2017,"cited_by_count":5},{"year":2016,"cited_by_count":3},{"year":2015,"cited_by_count":5},{"year":2014,"cited_by_count":3},{"year":2013,"cited_by_count":1},{"year":2012,"cited_by_count":2}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}