{"id":"https://openalex.org/W7143410467","doi":"https://doi.org/10.48550/arxiv.2603.26336","title":"From Pixels to Privacy: Temporally Consistent Video Anonymization via Token Pruning for Privacy Preserving Action Recognition","display_name":"From Pixels to Privacy: Temporally Consistent Video Anonymization via Token Pruning for Privacy Preserving Action Recognition","publication_year":2026,"publication_date":"2026-03-27","ids":{"openalex":"https://openalex.org/W7143410467","doi":"https://doi.org/10.48550/arxiv.2603.26336"},"language":"en","primary_location":{"id":"pmh:oai:pure.atira.dk:openaire/14cb63eb-e308-4400-a097-5e604479f180","is_oa":true,"landing_page_url":"https://vbn.aau.dk/da/publications/14cb63eb-e308-4400-a097-5e604479f180","pdf_url":null,"source":{"id":"https://openalex.org/S4306401731","display_name":"VBN Forskningsportal (Aalborg Universitet)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I891191580","host_organization_name":"Aalborg University","host_organization_lineage":["https://openalex.org/I891191580"],"host_organization_lineage_names":[],"type":"repository"},"license":"other-oa","license_id":"https://openalex.org/licenses/other-oa","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Aslam, N, Ray, A, Haurum, J B, Esterle, L & Nasrollahi, K 2026, From Pixels to Privacy: Temporally Consistent Video Anonymization via Token Pruning for Privacy Preserving Action Recognition. in CVPR Workshop. IEEE (Institute of Electrical and Electronics Engineers). < https://arxiv.org/pdf/2603.26336 >","raw_type":"info:eu-repo/semantics/publishedVersion"},"type":"preprint","indexed_in":["datacite"],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"https://vbn.aau.dk/da/publications/14cb63eb-e308-4400-a097-5e604479f180","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5083010249","display_name":"Nazia Aslam","orcid":"https://orcid.org/0000-0002-8381-9702"},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Aslam, Nazia","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5071873981","display_name":"Abhisek Ray","orcid":"https://orcid.org/0000-0002-0551-5674"},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Ray, Abhisek","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5130961094","display_name":"Joakim Bruslund Haurum","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Haurum, Joakim Bruslund","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5123253081","display_name":"Lukas Esterle","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Esterle, Lukas","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"last","author":{"id":"https://openalex.org/A5130982498","display_name":"Kamal Nasrollahi","orcid":null},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Nasrollahi, Kamal","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":5,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":null,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":null,"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":null,"last_page":null},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10812","display_name":"Human Pose and Action Recognition","score":0.8418999910354614,"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":0.8418999910354614,"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/T10775","display_name":"Generative Adversarial Networks and Image Synthesis","score":0.018300000578165054,"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/T11448","display_name":"Face recognition and analysis","score":0.016899999231100082,"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/security-token","display_name":"Security token","score":0.6862000226974487},{"id":"https://openalex.org/keywords/biometrics","display_name":"Biometrics","score":0.5590000152587891},{"id":"https://openalex.org/keywords/leverage","display_name":"Leverage (statistics)","score":0.5105999708175659},{"id":"https://openalex.org/keywords/action-recognition","display_name":"Action recognition","score":0.5091000199317932},{"id":"https://openalex.org/keywords/mobile-device","display_name":"Mobile device","score":0.46149998903274536},{"id":"https://openalex.org/keywords/pruning","display_name":"Pruning","score":0.4440000057220459},{"id":"https://openalex.org/keywords/key","display_name":"Key (lock)","score":0.39959999918937683},{"id":"https://openalex.org/keywords/robustness","display_name":"Robustness (evolution)","score":0.37209999561309814},{"id":"https://openalex.org/keywords/action","display_name":"Action (physics)","score":0.3571999967098236}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.8377000093460083},{"id":"https://openalex.org/C48145219","wikidata":"https://www.wikidata.org/wiki/Q1335365","display_name":"Security token","level":2,"score":0.6862000226974487},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.5929999947547913},{"id":"https://openalex.org/C184297639","wikidata":"https://www.wikidata.org/wiki/Q177765","display_name":"Biometrics","level":2,"score":0.5590000152587891},{"id":"https://openalex.org/C153083717","wikidata":"https://www.wikidata.org/wiki/Q6535263","display_name":"Leverage (statistics)","level":2,"score":0.5105999708175659},{"id":"https://openalex.org/C2987834672","wikidata":"https://www.wikidata.org/wiki/Q4677630","display_name":"Action recognition","level":3,"score":0.5091000199317932},{"id":"https://openalex.org/C186967261","wikidata":"https://www.wikidata.org/wiki/Q5082128","display_name":"Mobile device","level":2,"score":0.46149998903274536},{"id":"https://openalex.org/C108010975","wikidata":"https://www.wikidata.org/wiki/Q500094","display_name":"Pruning","level":2,"score":0.4440000057220459},{"id":"https://openalex.org/C119857082","wikidata":"https://www.wikidata.org/wiki/Q2539","display_name":"Machine learning","level":1,"score":0.4023999869823456},{"id":"https://openalex.org/C26517878","wikidata":"https://www.wikidata.org/wiki/Q228039","display_name":"Key (lock)","level":2,"score":0.39959999918937683},{"id":"https://openalex.org/C63479239","wikidata":"https://www.wikidata.org/wiki/Q7353546","display_name":"Robustness (evolution)","level":3,"score":0.37209999561309814},{"id":"https://openalex.org/C2780791683","wikidata":"https://www.wikidata.org/wiki/Q846785","display_name":"Action (physics)","level":2,"score":0.3571999967098236},{"id":"https://openalex.org/C31972630","wikidata":"https://www.wikidata.org/wiki/Q844240","display_name":"Computer vision","level":1,"score":0.35659998655319214},{"id":"https://openalex.org/C125411270","wikidata":"https://www.wikidata.org/wiki/Q18653","display_name":"Encoding (memory)","level":2,"score":0.350600004196167},{"id":"https://openalex.org/C153180895","wikidata":"https://www.wikidata.org/wiki/Q7148389","display_name":"Pattern recognition (psychology)","level":2,"score":0.34439998865127563},{"id":"https://openalex.org/C113954288","wikidata":"https://www.wikidata.org/wiki/Q186885","display_name":"Timestamp","level":2,"score":0.32670000195503235},{"id":"https://openalex.org/C160633673","wikidata":"https://www.wikidata.org/wiki/Q355198","display_name":"Pixel","level":2,"score":0.32249999046325684},{"id":"https://openalex.org/C137822555","wikidata":"https://www.wikidata.org/wiki/Q2587068","display_name":"Information sensitivity","level":2,"score":0.3167000114917755},{"id":"https://openalex.org/C66746571","wikidata":"https://www.wikidata.org/wiki/Q1134833","display_name":"ENCODE","level":3,"score":0.31310001015663147},{"id":"https://openalex.org/C123201435","wikidata":"https://www.wikidata.org/wiki/Q456632","display_name":"Information privacy","level":2,"score":0.2809000015258789},{"id":"https://openalex.org/C66322947","wikidata":"https://www.wikidata.org/wiki/Q11658","display_name":"Transformer","level":3,"score":0.27399998903274536},{"id":"https://openalex.org/C124101348","wikidata":"https://www.wikidata.org/wiki/Q172491","display_name":"Data mining","level":1,"score":0.2689000070095062},{"id":"https://openalex.org/C52622490","wikidata":"https://www.wikidata.org/wiki/Q1026626","display_name":"Feature extraction","level":2,"score":0.26260000467300415},{"id":"https://openalex.org/C59404180","wikidata":"https://www.wikidata.org/wiki/Q17013334","display_name":"Feature learning","level":2,"score":0.25529998540878296},{"id":"https://openalex.org/C121687571","wikidata":"https://www.wikidata.org/wiki/Q4677630","display_name":"Activity recognition","level":2,"score":0.25459998846054077},{"id":"https://openalex.org/C3017597292","wikidata":"https://www.wikidata.org/wiki/Q25052250","display_name":"Privacy protection","level":2,"score":0.2529999911785126}],"mesh":[],"locations_count":2,"locations":[{"id":"pmh:oai:pure.atira.dk:openaire/14cb63eb-e308-4400-a097-5e604479f180","is_oa":true,"landing_page_url":"https://vbn.aau.dk/da/publications/14cb63eb-e308-4400-a097-5e604479f180","pdf_url":null,"source":{"id":"https://openalex.org/S4306401731","display_name":"VBN Forskningsportal (Aalborg Universitet)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I891191580","host_organization_name":"Aalborg University","host_organization_lineage":["https://openalex.org/I891191580"],"host_organization_lineage_names":[],"type":"repository"},"license":"other-oa","license_id":"https://openalex.org/licenses/other-oa","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Aslam, N, Ray, A, Haurum, J B, Esterle, L & Nasrollahi, K 2026, From Pixels to Privacy: Temporally Consistent Video Anonymization via Token Pruning for Privacy Preserving Action Recognition. in CVPR Workshop. IEEE (Institute of Electrical and Electronics Engineers). < https://arxiv.org/pdf/2603.26336 >","raw_type":"info:eu-repo/semantics/publishedVersion"},{"id":"doi:10.48550/arxiv.2603.26336","is_oa":true,"landing_page_url":"https://doi.org/10.48550/arxiv.2603.26336","pdf_url":null,"source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":null,"is_accepted":false,"is_published":null,"raw_source_name":null,"raw_type":"article"}],"best_oa_location":{"id":"pmh:oai:pure.atira.dk:openaire/14cb63eb-e308-4400-a097-5e604479f180","is_oa":true,"landing_page_url":"https://vbn.aau.dk/da/publications/14cb63eb-e308-4400-a097-5e604479f180","pdf_url":null,"source":{"id":"https://openalex.org/S4306401731","display_name":"VBN Forskningsportal (Aalborg Universitet)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I891191580","host_organization_name":"Aalborg University","host_organization_lineage":["https://openalex.org/I891191580"],"host_organization_lineage_names":[],"type":"repository"},"license":"other-oa","license_id":"https://openalex.org/licenses/other-oa","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Aslam, N, Ray, A, Haurum, J B, Esterle, L & Nasrollahi, K 2026, From Pixels to Privacy: Temporally Consistent Video Anonymization via Token Pruning for Privacy Preserving Action Recognition. in CVPR Workshop. IEEE (Institute of Electrical and Electronics Engineers). < https://arxiv.org/pdf/2603.26336 >","raw_type":"info:eu-repo/semantics/publishedVersion"},"sustainable_development_goals":[{"score":0.6718161106109619,"display_name":"Gender equality","id":"https://metadata.un.org/sdg/5"}],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":0,"referenced_works":[],"related_works":[],"abstract_inverted_index":{"Recent":[0],"advances":[1],"in":[2,90],"large-scale":[3],"video":[4,9,43,51,71,209],"models":[5,21,52,184],"have":[6],"significantly":[7],"improved":[8],"understanding":[10],"across":[11],"domains":[12],"such":[13],"as":[14,58],"surveillance,":[15],"healthcare,":[16],"and":[17,34,80,119,147,204],"entertainment.":[18],"However,":[19],"these":[20],"also":[22],"amplify":[23],"privacy":[24,81,121,162,192],"risks":[25],"by":[26,161],"encoding":[27],"sensitive":[28],"attributes,":[29],"including":[30],"facial":[31],"identity,":[32],"race,":[33],"gender.":[35],"While":[36],"image":[37],"anonymization":[38,44,72],"has":[39],"been":[40],"extensively":[41],"studied,":[42],"remains":[45],"relatively":[46],"underexplored,":[47],"even":[48],"though":[49],"modern":[50],"can":[53,94],"leverage":[54],"spatiotemporal":[55,70,145,199],"motion":[56],"patterns":[57],"biometric":[59],"identifiers.":[60],"To":[61],"address":[62],"this":[63,107],"challenge,":[64],"we":[65,109],"propose":[66],"a":[67,120,129,140],"novel":[68],"attention-driven":[69,198],"framework":[73],"based":[74],"on":[75,106,186],"systematic":[76],"disentanglement":[77],"of":[78],"utility":[79],"features.":[82],"Our":[83],"key":[84],"insight":[85],"is":[86],"that":[87,124,175,197],"attention":[88,136],"mechanisms":[89],"Vision":[91],"Transformers":[92],"(ViTs)":[93],"be":[95],"explicitly":[96],"structured":[97],"to":[98,138,183],"separate":[99],"action-relevant":[100],"information":[101],"from":[102],"privacy-sensitive":[103],"content.":[104],"Building":[105],"insight,":[108],"introduce":[110],"two":[111],"task-specific":[112],"classification":[113],"tokens,":[114],"an":[115,202],"action":[116,170,179],"CLS":[117,122],"token":[118],"token,":[123],"learn":[125],"complementary":[126],"representations":[127],"within":[128],"shared":[130],"Transformer":[131],"backbone.":[132],"We":[133],"contrast":[134],"their":[135],"distributions":[137],"compute":[139],"utility-privacy":[141],"score":[142],"for":[143,169,207],"each":[144],"tubelet,":[146],"keep":[148],"the":[149,153],"top-k":[150],"tubelets":[151,159],"with":[152],"highest":[154],"scores.":[155],"This":[156],"selectively":[157],"prunes":[158],"dominated":[160],"cues":[163],"while":[164,189],"preserving":[165],"those":[166],"most":[167],"critical":[168],"recognition.":[171],"Extensive":[172],"experiments":[173],"demonstrate":[174],"our":[176],"approach":[177],"maintains":[178],"recognition":[180],"performance":[181],"comparable":[182],"trained":[185],"raw":[187],"videos,":[188],"substantially":[190],"reducing":[191],"leakage.":[193],"These":[194],"results":[195],"indicate":[196],"pruning":[200],"offers":[201],"effective":[203],"principled":[205],"solution":[206],"privacy-preserving":[208],"analytics.":[210]},"counts_by_year":[],"updated_date":"2026-06-12T08:23:45.883708","created_date":"2026-03-31T00:00:00"}
