{"id":"https://openalex.org/W3109073897","doi":"https://doi.org/10.1109/lra.2021.3064149","title":"Fine-Grained Activity Recognition for Assembly Videos","display_name":"Fine-Grained Activity Recognition for Assembly Videos","publication_year":2021,"publication_date":"2021-03-08","ids":{"openalex":"https://openalex.org/W3109073897","doi":"https://doi.org/10.1109/lra.2021.3064149","mag":"3109073897"},"language":"en","primary_location":{"id":"doi:10.1109/lra.2021.3064149","is_oa":false,"landing_page_url":"https://doi.org/10.1109/lra.2021.3064149","pdf_url":null,"source":{"id":"https://openalex.org/S4210169774","display_name":"IEEE Robotics and Automation Letters","issn_l":"2377-3766","issn":["2377-3766","2377-3774"],"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":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Robotics and Automation Letters","raw_type":"journal-article"},"type":"article","indexed_in":["arxiv","crossref","datacite"],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"https://arxiv.org/pdf/2012.01392","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5055411060","display_name":"Jonathan D. Jones","orcid":"https://orcid.org/0000-0002-0605-8428"},"institutions":[{"id":"https://openalex.org/I145311948","display_name":"Johns Hopkins University","ror":"https://ror.org/00za53h95","country_code":"US","type":"education","lineage":["https://openalex.org/I145311948"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Jonathan D. Jones","raw_affiliation_strings":["Department of Electrical Engineering, Johns Hopkins University, Baltimore, MD, USA","Johns Hopkins University"],"raw_orcid":"https://orcid.org/0000-0002-0605-8428","affiliations":[{"raw_affiliation_string":"Department of Electrical Engineering, Johns Hopkins University, Baltimore, MD, USA","institution_ids":["https://openalex.org/I145311948"]},{"raw_affiliation_string":"Johns Hopkins University","institution_ids":["https://openalex.org/I145311948"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5086589794","display_name":"Cathryn S. Cortesa","orcid":null},"institutions":[{"id":"https://openalex.org/I145311948","display_name":"Johns Hopkins University","ror":"https://ror.org/00za53h95","country_code":"US","type":"education","lineage":["https://openalex.org/I145311948"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Cathryn Cortesa","raw_affiliation_strings":["Department of Cognitive Science, Johns Hopkins University, Baltimore, MD, USA","Department of Cognitive Science , Johns Hopkins University , Baltimore, MD , USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Cognitive Science, Johns Hopkins University, Baltimore, MD, USA","institution_ids":["https://openalex.org/I145311948"]},{"raw_affiliation_string":"Department of Cognitive Science , Johns Hopkins University , Baltimore, MD , USA","institution_ids":["https://openalex.org/I145311948"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5020428222","display_name":"Amy L. Shelton","orcid":"https://orcid.org/0000-0002-2299-7214"},"institutions":[{"id":"https://openalex.org/I145311948","display_name":"Johns Hopkins University","ror":"https://ror.org/00za53h95","country_code":"US","type":"education","lineage":["https://openalex.org/I145311948"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Amy Shelton","raw_affiliation_strings":["School of Education, Johns Hopkins University, Baltimore, MD, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"School of Education, Johns Hopkins University, Baltimore, MD, USA","institution_ids":["https://openalex.org/I145311948"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5110099697","display_name":"Barbara Landau","orcid":null},"institutions":[{"id":"https://openalex.org/I145311948","display_name":"Johns Hopkins University","ror":"https://ror.org/00za53h95","country_code":"US","type":"education","lineage":["https://openalex.org/I145311948"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Barbara Landau","raw_affiliation_strings":["Department of Cognitive Science, Johns Hopkins University, Baltimore, MD, USA","Department of Cognitive Science , Johns Hopkins University , Baltimore, MD , USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Cognitive Science, Johns Hopkins University, Baltimore, MD, USA","institution_ids":["https://openalex.org/I145311948"]},{"raw_affiliation_string":"Department of Cognitive Science , Johns Hopkins University , Baltimore, MD , USA","institution_ids":["https://openalex.org/I145311948"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5014580424","display_name":"Sanjeev Khudanpur","orcid":"https://orcid.org/0000-0001-5976-0897"},"institutions":[{"id":"https://openalex.org/I145311948","display_name":"Johns Hopkins University","ror":"https://ror.org/00za53h95","country_code":"US","type":"education","lineage":["https://openalex.org/I145311948"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Sanjeev Khudanpur","raw_affiliation_strings":["Department of Electrical Engineering, Johns Hopkins University, Baltimore, MD, USA","[Department of Electrical Engineering, Johns Hopkins University, Baltimore, MD, USA]"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Electrical Engineering, Johns Hopkins University, Baltimore, MD, USA","institution_ids":["https://openalex.org/I145311948"]},{"raw_affiliation_string":"[Department of Electrical Engineering, Johns Hopkins University, Baltimore, MD, USA]","institution_ids":["https://openalex.org/I145311948"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5041383246","display_name":"Gregory D. Hager","orcid":"https://orcid.org/0000-0002-6662-9763"},"institutions":[{"id":"https://openalex.org/I145311948","display_name":"Johns Hopkins University","ror":"https://ror.org/00za53h95","country_code":"US","type":"education","lineage":["https://openalex.org/I145311948"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Gregory D. Hager","raw_affiliation_strings":["Department of Computer Science, Johns Hopkins University, Baltimore, MD, USA","Dept. of Comput. Sci., Johns Hopkins Univ., Baltimore, MD, USA"],"raw_orcid":"https://orcid.org/0000-0002-6662-9763","affiliations":[{"raw_affiliation_string":"Department of Computer Science, Johns Hopkins University, Baltimore, MD, USA","institution_ids":["https://openalex.org/I145311948"]},{"raw_affiliation_string":"Dept. of Comput. Sci., Johns Hopkins Univ., Baltimore, MD, USA","institution_ids":["https://openalex.org/I145311948"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I145311948"],"apc_list":null,"apc_paid":null,"fwci":0.2712,"has_fulltext":false,"cited_by_count":3,"citation_normalized_percentile":{"value":0.48931684,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":96},"biblio":{"volume":"6","issue":"2","first_page":"3728","last_page":"3735"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10812","display_name":"Human Pose and Action Recognition","score":0.9997000098228455,"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":0.9997000098228455,"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/T10653","display_name":"Robot Manipulation and Learning","score":0.9950000047683716,"subfield":{"id":"https://openalex.org/subfields/2207","display_name":"Control and Systems Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T12290","display_name":"Human Motion and Animation","score":0.9836999773979187,"subfield":{"id":"https://openalex.org/subfields/2207","display_name":"Control and Systems 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/computer-science","display_name":"Computer science","score":0.7901897430419922},{"id":"https://openalex.org/keywords/generality","display_name":"Generality","score":0.7870777249336243},{"id":"https://openalex.org/keywords/task","display_name":"Task (project management)","score":0.6930527687072754},{"id":"https://openalex.org/keywords/block","display_name":"Block (permutation group theory)","score":0.6830810308456421},{"id":"https://openalex.org/keywords/set","display_name":"Set (abstract data type)","score":0.5851715207099915},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.514458179473877},{"id":"https://openalex.org/keywords/action-recognition","display_name":"Action recognition","score":0.5013723373413086},{"id":"https://openalex.org/keywords/kinematics","display_name":"Kinematics","score":0.493566632270813},{"id":"https://openalex.org/keywords/action","display_name":"Action (physics)","score":0.4934884309768677},{"id":"https://openalex.org/keywords/human\u2013computer-interaction","display_name":"Human\u2013computer interaction","score":0.37833863496780396},{"id":"https://openalex.org/keywords/pattern-recognition","display_name":"Pattern recognition (psychology)","score":0.3640093505382538},{"id":"https://openalex.org/keywords/computer-vision","display_name":"Computer vision","score":0.34678518772125244},{"id":"https://openalex.org/keywords/class","display_name":"Class (philosophy)","score":0.12189394235610962},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.11506086587905884},{"id":"https://openalex.org/keywords/programming-language","display_name":"Programming language","score":0.07686525583267212},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.07089048624038696}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7901897430419922},{"id":"https://openalex.org/C2780767217","wikidata":"https://www.wikidata.org/wiki/Q5532421","display_name":"Generality","level":2,"score":0.7870777249336243},{"id":"https://openalex.org/C2780451532","wikidata":"https://www.wikidata.org/wiki/Q759676","display_name":"Task (project management)","level":2,"score":0.6930527687072754},{"id":"https://openalex.org/C2777210771","wikidata":"https://www.wikidata.org/wiki/Q4927124","display_name":"Block (permutation group theory)","level":2,"score":0.6830810308456421},{"id":"https://openalex.org/C177264268","wikidata":"https://www.wikidata.org/wiki/Q1514741","display_name":"Set (abstract data type)","level":2,"score":0.5851715207099915},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.514458179473877},{"id":"https://openalex.org/C2987834672","wikidata":"https://www.wikidata.org/wiki/Q4677630","display_name":"Action recognition","level":3,"score":0.5013723373413086},{"id":"https://openalex.org/C39920418","wikidata":"https://www.wikidata.org/wiki/Q11476","display_name":"Kinematics","level":2,"score":0.493566632270813},{"id":"https://openalex.org/C2780791683","wikidata":"https://www.wikidata.org/wiki/Q846785","display_name":"Action (physics)","level":2,"score":0.4934884309768677},{"id":"https://openalex.org/C107457646","wikidata":"https://www.wikidata.org/wiki/Q207434","display_name":"Human\u2013computer interaction","level":1,"score":0.37833863496780396},{"id":"https://openalex.org/C153180895","wikidata":"https://www.wikidata.org/wiki/Q7148389","display_name":"Pattern recognition (psychology)","level":2,"score":0.3640093505382538},{"id":"https://openalex.org/C31972630","wikidata":"https://www.wikidata.org/wiki/Q844240","display_name":"Computer vision","level":1,"score":0.34678518772125244},{"id":"https://openalex.org/C2777212361","wikidata":"https://www.wikidata.org/wiki/Q5127848","display_name":"Class (philosophy)","level":2,"score":0.12189394235610962},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.11506086587905884},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.07686525583267212},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.07089048624038696},{"id":"https://openalex.org/C2524010","wikidata":"https://www.wikidata.org/wiki/Q8087","display_name":"Geometry","level":1,"score":0.0},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.0},{"id":"https://openalex.org/C15744967","wikidata":"https://www.wikidata.org/wiki/Q9418","display_name":"Psychology","level":0,"score":0.0},{"id":"https://openalex.org/C201995342","wikidata":"https://www.wikidata.org/wiki/Q682496","display_name":"Systems engineering","level":1,"score":0.0},{"id":"https://openalex.org/C74650414","wikidata":"https://www.wikidata.org/wiki/Q11397","display_name":"Classical mechanics","level":1,"score":0.0},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.0},{"id":"https://openalex.org/C542102704","wikidata":"https://www.wikidata.org/wiki/Q183257","display_name":"Psychotherapist","level":1,"score":0.0}],"mesh":[],"locations_count":4,"locations":[{"id":"doi:10.1109/lra.2021.3064149","is_oa":false,"landing_page_url":"https://doi.org/10.1109/lra.2021.3064149","pdf_url":null,"source":{"id":"https://openalex.org/S4210169774","display_name":"IEEE Robotics and Automation Letters","issn_l":"2377-3766","issn":["2377-3766","2377-3774"],"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":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Robotics and Automation Letters","raw_type":"journal-article"},{"id":"pmh:oai:arXiv.org:2012.01392","is_oa":true,"landing_page_url":"http://arxiv.org/abs/2012.01392","pdf_url":"https://arxiv.org/pdf/2012.01392","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":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"text"},{"id":"doi:10.48550/arxiv.2012.01392","is_oa":true,"landing_page_url":"https://doi.org/10.48550/arxiv.2012.01392","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":null,"license_id":null,"version":null,"is_accepted":false,"is_published":null,"raw_source_name":null,"raw_type":"Preprint"},{"id":"mag:3109073897","is_oa":false,"landing_page_url":null,"pdf_url":null,"source":null,"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":null,"raw_source_name":null,"raw_type":null}],"best_oa_location":{"id":"pmh:oai:arXiv.org:2012.01392","is_oa":true,"landing_page_url":"http://arxiv.org/abs/2012.01392","pdf_url":"https://arxiv.org/pdf/2012.01392","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":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"text"},"sustainable_development_goals":[{"display_name":"Sustainable cities and communities","id":"https://metadata.un.org/sdg/11","score":0.5600000023841858}],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":22,"referenced_works":["https://openalex.org/W1021004080","https://openalex.org/W1517508454","https://openalex.org/W1529739011","https://openalex.org/W1969579675","https://openalex.org/W2065308200","https://openalex.org/W2082073215","https://openalex.org/W2118154608","https://openalex.org/W2129999749","https://openalex.org/W2158188757","https://openalex.org/W2413983136","https://openalex.org/W2491875666","https://openalex.org/W2510642588","https://openalex.org/W2909681286","https://openalex.org/W2922429790","https://openalex.org/W2945878573","https://openalex.org/W2963520965","https://openalex.org/W3003651690","https://openalex.org/W3009635394","https://openalex.org/W3104073816","https://openalex.org/W4206192903","https://openalex.org/W4248598408","https://openalex.org/W6683226453"],"related_works":["https://openalex.org/W3127162144","https://openalex.org/W2809204870","https://openalex.org/W3018812558","https://openalex.org/W2205118440","https://openalex.org/W2755287484","https://openalex.org/W2475929051","https://openalex.org/W3035625567","https://openalex.org/W2566774760","https://openalex.org/W2890477007","https://openalex.org/W3040271568","https://openalex.org/W3127761903","https://openalex.org/W2199557508","https://openalex.org/W2736360272","https://openalex.org/W2950554015","https://openalex.org/W2889713529","https://openalex.org/W1997681736","https://openalex.org/W3015167968","https://openalex.org/W3176278386","https://openalex.org/W2890663877","https://openalex.org/W3202579984"],"abstract_inverted_index":{"In":[0],"this":[1,92],"letter":[2],"we":[3,120],"address":[4,68],"the":[5,34,54,62,69,141,164],"task":[6,70],"of":[7,17,30,37,45,71,113,153,161,183,187],"recognizing":[8,100],"assembly":[9,38,72,81,101,146],"actions":[10,39,82,102,147],"as":[11],"a":[12,15,20,28,43,87,96,114],"structure":[13],"(e.g.":[14],"piece":[16],"furniture":[18],"or":[19],"toy":[21],"block":[22],"tower)":[23],"is":[24],"built":[25],"up":[26],"from":[27,103],"set":[29],"primitive":[31],"objects.":[32],"Recognizing":[33],"full":[35,77],"range":[36],"requires":[40,167],"perception":[41],"at":[42],"level":[44],"spatial":[46,115],"detail":[47],"that":[48,110],"has":[49],"not":[50],"been":[51],"attempted":[52],"in":[53,75],"action":[55,73],"recognition":[56,65,74],"literature":[57],"to":[58,67,94,171],"date.":[59],"We":[60,90],"extend":[61],"fine-grained":[63,168],"activity":[64],"setting":[66],"its":[76],"generality":[78],"by":[79],"unifying":[80],"and":[83,135,155],"kinematic":[84],"structures":[85],"within":[86],"single":[88],"framework.":[89],"use":[91],"framework":[93],"develop":[95],"general":[97],"method":[98,123],"for":[99],"observation":[104,108],"sequences,":[105],"along":[106],"with":[107,148],"features":[109],"take":[111],"advantage":[112],"assembly's":[116],"special":[117],"structure.":[118],"Finally,":[119],"evaluate":[121],"our":[122,143,175],"empirically":[124],"on":[125],"two":[126],"application-driven":[127],"data":[128],"sources:":[129],"1)":[130],"An":[131],"IKEA":[132],"furniture-assembly":[133],"dataset,":[134],"2)":[136],"A":[137],"block-building":[138],"dataset.":[139],"On":[140,163],"first,":[142],"system":[144,176],"recognizes":[145],"an":[149,156,178],"average":[150,157,179],"framewise":[151],"accuracy":[152],"70%":[154],"normalized":[158,180],"edit":[159,181],"distance":[160,182],"10%.":[162],"second,":[165],"which":[166],"geometric":[169],"reasoning":[170],"distinguish":[172],"between":[173],"assemblies,":[174],"attains":[177],"23%-a":[184],"relative":[185],"improvement":[186],"69%":[188],"over":[189],"prior":[190],"work.":[191]},"counts_by_year":[{"year":2023,"cited_by_count":2},{"year":2022,"cited_by_count":1}],"updated_date":"2026-07-23T08:03:31.855105","created_date":"2025-10-10T00:00:00"}