{"id":"https://openalex.org/W1557400138","doi":"https://doi.org/10.1109/tifs.2013.2277669","title":"Exploiting Spatio-Temporal Scene Structure for Wide-Area Activity Analysis in Unconstrained Environments","display_name":"Exploiting Spatio-Temporal Scene Structure for Wide-Area Activity Analysis in Unconstrained Environments","publication_year":2013,"publication_date":"2013-08-07","ids":{"openalex":"https://openalex.org/W1557400138","doi":"https://doi.org/10.1109/tifs.2013.2277669","mag":"1557400138"},"language":"en","primary_location":{"is_oa":false,"landing_page_url":"https://doi.org/10.1109/tifs.2013.2277669","pdf_url":null,"source":{"id":"https://openalex.org/S61310614","display_name":"IEEE Transactions on Information Forensics and Security","issn_l":"1556-6013","issn":["1556-6013","1556-6021"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319808","host_organization_name":"Institute of Electrical and Electronics Engineers","host_organization_lineage":["https://openalex.org/P4310319808"],"host_organization_lineage_names":["Institute of Electrical and Electronics Engineers"],"type":"journal"},"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false},"type":"article","type_crossref":"journal-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/A5113440947","display_name":"Nandita M. Nayak","orcid":null},"institutions":[{"id":"https://openalex.org/I103635307","display_name":"University of California, Riverside","ror":"https://ror.org/03nawhv43","country_code":"US","type":"education","lineage":["https://openalex.org/I103635307"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Nandita M. Nayak","raw_affiliation_strings":["Computer Science department, University of California, Riverside, CA, USA"],"affiliations":[{"raw_affiliation_string":"Computer Science department, University of California, Riverside, CA, USA","institution_ids":["https://openalex.org/I103635307"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5101865110","display_name":"Yingying Zhu","orcid":"https://orcid.org/0000-0003-3920-5890"},"institutions":[{"id":"https://openalex.org/I103635307","display_name":"University of California, Riverside","ror":"https://ror.org/03nawhv43","country_code":"US","type":"education","lineage":["https://openalex.org/I103635307"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Yingying Zhu","raw_affiliation_strings":["Electrical Engineering department, University of California, Riverside, CA, USA"],"affiliations":[{"raw_affiliation_string":"Electrical Engineering department, University of California, Riverside, CA, USA","institution_ids":["https://openalex.org/I103635307"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5004732580","display_name":"Amit K. Roy\u2013Chowdhury","orcid":"https://orcid.org/0000-0001-6690-9725"},"institutions":[{"id":"https://openalex.org/I103635307","display_name":"University of California, Riverside","ror":"https://ror.org/03nawhv43","country_code":"US","type":"education","lineage":["https://openalex.org/I103635307"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Amit K. Roy-Chowdhury","raw_affiliation_strings":["Electrical Engineering department, University of California, Riverside, CA, USA"],"affiliations":[{"raw_affiliation_string":"Electrical Engineering department, University of California, Riverside, CA, USA","institution_ids":["https://openalex.org/I103635307"]}]}],"institution_assertions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":2.311,"has_fulltext":true,"fulltext_origin":"ngrams","cited_by_count":11,"citation_normalized_percentile":{"value":0.768311,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":86,"max":87},"biblio":{"volume":"8","issue":"10","first_page":"1610","last_page":"1619"},"is_retracted":false,"is_paratext":false,"primary_topic":{"id":"https://openalex.org/T10812","display_name":"Human Pose and Action Recognition","score":0.9999,"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/T10812","display_name":"Human Pose and Action Recognition","score":0.9999,"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/T11512","display_name":"Anomaly Detection Techniques and Applications","score":0.9988,"subfield":{"id":"https://openalex.org/subfields/1702","display_name":"Artificial Intelligence"},"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/T10331","display_name":"Video Surveillance and Tracking Methods","score":0.9964,"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/activity-recognition","display_name":"Activity Recognition","score":0.8129461},{"id":"https://openalex.org/keywords/markov-random-field","display_name":"Markov random field","score":0.54781276},{"id":"https://openalex.org/keywords/representation","display_name":"Representation","score":0.44601467}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.8388081},{"id":"https://openalex.org/C121687571","wikidata":"https://www.wikidata.org/wiki/Q4677630","display_name":"Activity recognition","level":2,"score":0.8129461},{"id":"https://openalex.org/C23224414","wikidata":"https://www.wikidata.org/wiki/Q176769","display_name":"Hidden Markov model","level":2,"score":0.6666316},{"id":"https://openalex.org/C2776214188","wikidata":"https://www.wikidata.org/wiki/Q408386","display_name":"Inference","level":2,"score":0.65372574},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.64994496},{"id":"https://openalex.org/C2778045648","wikidata":"https://www.wikidata.org/wiki/Q176827","display_name":"Markov random field","level":4,"score":0.54781276},{"id":"https://openalex.org/C49937458","wikidata":"https://www.wikidata.org/wiki/Q2599292","display_name":"Probabilistic logic","level":2,"score":0.5244601},{"id":"https://openalex.org/C153180895","wikidata":"https://www.wikidata.org/wiki/Q7148389","display_name":"Pattern recognition (psychology)","level":2,"score":0.50086},{"id":"https://openalex.org/C2779343474","wikidata":"https://www.wikidata.org/wiki/Q3109175","display_name":"Context (archaeology)","level":2,"score":0.4917093},{"id":"https://openalex.org/C177264268","wikidata":"https://www.wikidata.org/wiki/Q1514741","display_name":"Set (abstract data type)","level":2,"score":0.47186536},{"id":"https://openalex.org/C2776359362","wikidata":"https://www.wikidata.org/wiki/Q2145286","display_name":"Representation (politics)","level":3,"score":0.44601467},{"id":"https://openalex.org/C119857082","wikidata":"https://www.wikidata.org/wiki/Q2539","display_name":"Machine learning","level":1,"score":0.44589686},{"id":"https://openalex.org/C132525143","wikidata":"https://www.wikidata.org/wiki/Q141488","display_name":"Graph","level":2,"score":0.42630714},{"id":"https://openalex.org/C98763669","wikidata":"https://www.wikidata.org/wiki/Q176645","display_name":"Markov chain","level":2,"score":0.41879278},{"id":"https://openalex.org/C115961682","wikidata":"https://www.wikidata.org/wiki/Q860623","display_name":"Image (mathematics)","level":2,"score":0.111010015},{"id":"https://openalex.org/C124504099","wikidata":"https://www.wikidata.org/wiki/Q56933","display_name":"Image segmentation","level":3,"score":0.09687412},{"id":"https://openalex.org/C151730666","wikidata":"https://www.wikidata.org/wiki/Q7205","display_name":"Paleontology","level":1,"score":0.0},{"id":"https://openalex.org/C80444323","wikidata":"https://www.wikidata.org/wiki/Q2878974","display_name":"Theoretical computer science","level":1,"score":0.0},{"id":"https://openalex.org/C94625758","wikidata":"https://www.wikidata.org/wiki/Q7163","display_name":"Politics","level":2,"score":0.0},{"id":"https://openalex.org/C17744445","wikidata":"https://www.wikidata.org/wiki/Q36442","display_name":"Political science","level":0,"score":0.0},{"id":"https://openalex.org/C199539241","wikidata":"https://www.wikidata.org/wiki/Q7748","display_name":"Law","level":1,"score":0.0},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.0},{"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":[{"is_oa":false,"landing_page_url":"https://doi.org/10.1109/tifs.2013.2277669","pdf_url":null,"source":{"id":"https://openalex.org/S61310614","display_name":"IEEE Transactions on Information Forensics and Security","issn_l":"1556-6013","issn":["1556-6013","1556-6021"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319808","host_organization_name":"Institute of Electrical and Electronics Engineers","host_organization_lineage":["https://openalex.org/P4310319808"],"host_organization_lineage_names":["Institute of Electrical and Electronics Engineers"],"type":"journal"},"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false}],"best_oa_location":null,"sustainable_development_goals":[{"score":0.46,"display_name":"Peace, justice, and strong institutions","id":"https://metadata.un.org/sdg/16"}],"grants":[{"funder":"https://openalex.org/F4320306076","funder_display_name":"National Science Foundation","award_id":"IIS-0712253"}],"datasets":[],"versions":[],"referenced_works_count":27,"referenced_works":["https://openalex.org/W10916678","https://openalex.org/W1841544152","https://openalex.org/W1864907493","https://openalex.org/W1979838576","https://openalex.org/W1983705368","https://openalex.org/W2010399676","https://openalex.org/W2034328688","https://openalex.org/W2045792079","https://openalex.org/W2046589395","https://openalex.org/W2047499569","https://openalex.org/W2057067088","https://openalex.org/W2067467244","https://openalex.org/W2081314772","https://openalex.org/W2095063460","https://openalex.org/W2098106399","https://openalex.org/W2102905523","https://openalex.org/W2105259485","https://openalex.org/W2128107557","https://openalex.org/W2128730107","https://openalex.org/W2129947832","https://openalex.org/W2137275576","https://openalex.org/W2139117248","https://openalex.org/W2142258645","https://openalex.org/W2142996775","https://openalex.org/W2533503513","https://openalex.org/W4249279051","https://openalex.org/W7859433"],"related_works":["https://openalex.org/W3145575561","https://openalex.org/W2995886640","https://openalex.org/W2364370872","https://openalex.org/W2294335174","https://openalex.org/W2164162849","https://openalex.org/W2097963413","https://openalex.org/W2025614924","https://openalex.org/W2001275470","https://openalex.org/W1591475660","https://openalex.org/W103069296"],"abstract_inverted_index":{"Surveillance":[0],"videos":[1,112],"in":[2,40,53,57,79,133,156,166,197],"unconstrained":[3],"environments":[4,60],"typically":[5],"consist":[6],"of":[7,11,46,51,55,86,111,116,152,164],"long":[8],"duration":[9],"sequences":[10],"activities":[12,28,56,78,126,165],"which":[13],"occur":[14],"at":[15],"different":[16],"spatio-temporal":[17,75,123],"locations":[18],"and":[19,95,113,154,189],"can":[20,147,169],"involve":[21],"multiple":[22],"people":[23],"acting":[24],"simultaneously.":[25],"Often,":[26],"the":[27,41,44,49,74,87,103,122,134,162,177,183,190,195],"have":[29],"contextual":[30,104],"relationships":[31,105,124],"with":[32],"one":[33],"another.":[34],"Although":[35],"context":[36,52,76],"has":[37],"been":[38],"studied":[39],"past":[42],"for":[43,72,119,142],"purpose":[45],"activity":[47,144,213],"recognition,":[48],"use":[50],"recognition":[54,163,198,207],"such":[58],"challenging":[59],"is":[61,89],"relatively":[62],"unexplored.":[63],"In":[64],"this":[65],"paper,":[66],"we":[67],"propose":[68],"a":[69,80,109,114,139,157,167],"novel":[70],"method":[71],"capturing":[73],"between":[77,106,125],"Markov":[81],"random":[82],"field.":[83],"The":[84],"structure":[85],"MRF":[88],"improvised":[90],"upon":[91],"during":[92],"test":[93],"time":[94],"not":[96],"predefined,":[97],"unlike":[98],"many":[99],"approaches":[100],"that":[101,146,161],"model":[102,137,203],"activities.":[107],"Given":[108],"collection":[110],"set":[115],"weak":[117],"classifiers":[118],"individual":[120,212],"activities,":[121],"are":[127],"represented":[128],"as":[129,172,204],"probabilistic":[130],"edge":[131],"weights":[132],"MRF.":[135],"This":[136],"provides":[138],"generic":[140],"representation":[141],"an":[143,173],"sequence":[145],"extend":[148],"to":[149,193,206],"any":[150],"number":[151],"objects":[153],"interactions":[155],"video.":[158],"We":[159,179],"show":[160],"video":[168],"be":[170],"posed":[171],"inference":[174],"problem":[175],"on":[176,182,211],"graph.":[178],"conduct":[180],"experiments":[181],"publicly":[184],"available":[185],"UCLA":[186],"office":[187],"dataset":[188],"VIRAT":[191],"dataset,":[192],"demonstrate":[194],"improvement":[196],"accuracy":[199],"using":[200,208],"our":[201],"proposed":[202],"opposed":[205],"state-of-the-art":[209],"features":[210],"regions.":[214]},"cited_by_api_url":"https://api.openalex.org/works?filter=cites:W1557400138","counts_by_year":[{"year":2018,"cited_by_count":1},{"year":2017,"cited_by_count":1},{"year":2016,"cited_by_count":1},{"year":2015,"cited_by_count":6},{"year":2014,"cited_by_count":2}],"updated_date":"2024-12-11T22:25:09.860383","created_date":"2016-06-24"}