{"id":"https://openalex.org/W4415624909","doi":"https://doi.org/10.1109/ipin66788.2025.11213399","title":"Anchored by Sound: Indoor Trajectory Mapping with Activity-Driven Audio Anchors","display_name":"Anchored by Sound: Indoor Trajectory Mapping with Activity-Driven Audio Anchors","publication_year":2025,"publication_date":"2025-09-15","ids":{"openalex":"https://openalex.org/W4415624909","doi":"https://doi.org/10.1109/ipin66788.2025.11213399"},"language":null,"primary_location":{"id":"doi:10.1109/ipin66788.2025.11213399","is_oa":false,"landing_page_url":"https://doi.org/10.1109/ipin66788.2025.11213399","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2025 International Conference on Indoor Positioning and Indoor Navigation (IPIN)","raw_type":"proceedings-article"},"type":"conference-paper","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/A5101565040","display_name":"Baofu Duan","orcid":"https://orcid.org/0000-0001-5454-0959"},"institutions":[{"id":"https://openalex.org/I98677209","display_name":"University of Edinburgh","ror":"https://ror.org/01nrxwf90","country_code":"GB","type":"education","lineage":["https://openalex.org/I98677209"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"Bingnan Duan","raw_affiliation_strings":["University of Edinburgh,School of Engineering,Edinburgh,UK"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"University of Edinburgh,School of Engineering,Edinburgh,UK","institution_ids":["https://openalex.org/I98677209"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5020631373","display_name":"Yinhuan Dong","orcid":"https://orcid.org/0000-0002-5975-9594"},"institutions":[{"id":"https://openalex.org/I98677209","display_name":"University of Edinburgh","ror":"https://ror.org/01nrxwf90","country_code":"GB","type":"education","lineage":["https://openalex.org/I98677209"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"Yinhuan Dong","raw_affiliation_strings":["University of Edinburgh,School of Engineering,Edinburgh,UK"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"University of Edinburgh,School of Engineering,Edinburgh,UK","institution_ids":["https://openalex.org/I98677209"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5035900215","display_name":"Ilari Vallivaara","orcid":"https://orcid.org/0000-0001-8562-5293"},"institutions":[{"id":"https://openalex.org/I98677209","display_name":"University of Edinburgh","ror":"https://ror.org/01nrxwf90","country_code":"GB","type":"education","lineage":["https://openalex.org/I98677209"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"Ilari Vallivaara","raw_affiliation_strings":["University of Edinburgh,Visiting Research Fellow,Edinburgh,UK"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"University of Edinburgh,Visiting Research Fellow,Edinburgh,UK","institution_ids":["https://openalex.org/I98677209"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5103755520","display_name":"Tughrul Arslan","orcid":null},"institutions":[{"id":"https://openalex.org/I98677209","display_name":"University of Edinburgh","ror":"https://ror.org/01nrxwf90","country_code":"GB","type":"education","lineage":["https://openalex.org/I98677209"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"Tughrul Arslan","raw_affiliation_strings":["University of Edinburgh,School of Engineering,Edinburgh,UK"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"University of Edinburgh,School of Engineering,Edinburgh,UK","institution_ids":["https://openalex.org/I98677209"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I98677209"],"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":"1","last_page":"6"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10326","display_name":"Indoor and Outdoor Localization Technologies","score":0.5997999906539917,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10326","display_name":"Indoor and Outdoor Localization Technologies","score":0.5997999906539917,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic 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/T12740","display_name":"Gait Recognition and Analysis","score":0.12290000170469284,"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"}},{"id":"https://openalex.org/T10191","display_name":"Robotics and Sensor-Based Localization","score":0.065700002014637,"subfield":{"id":"https://openalex.org/subfields/2202","display_name":"Aerospace 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/trajectory","display_name":"Trajectory","score":0.7111999988555908},{"id":"https://openalex.org/keywords/dead-reckoning","display_name":"Dead reckoning","score":0.5999000072479248},{"id":"https://openalex.org/keywords/sensor-fusion","display_name":"Sensor fusion","score":0.5194000005722046},{"id":"https://openalex.org/keywords/position","display_name":"Position (finance)","score":0.49880000948905945},{"id":"https://openalex.org/keywords/microphone","display_name":"Microphone","score":0.4763000011444092},{"id":"https://openalex.org/keywords/simultaneous-localization-and-mapping","display_name":"Simultaneous localization and mapping","score":0.4465000033378601},{"id":"https://openalex.org/keywords/software-deployment","display_name":"Software deployment","score":0.4162999987602234},{"id":"https://openalex.org/keywords/tracking-system","display_name":"Tracking system","score":0.38280001282691956},{"id":"https://openalex.org/keywords/tracking","display_name":"Tracking (education)","score":0.36890000104904175}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7164000272750854},{"id":"https://openalex.org/C13662910","wikidata":"https://www.wikidata.org/wiki/Q193139","display_name":"Trajectory","level":2,"score":0.7111999988555908},{"id":"https://openalex.org/C31972630","wikidata":"https://www.wikidata.org/wiki/Q844240","display_name":"Computer vision","level":1,"score":0.616599977016449},{"id":"https://openalex.org/C106165642","wikidata":"https://www.wikidata.org/wiki/Q152255","display_name":"Dead reckoning","level":3,"score":0.5999000072479248},{"id":"https://openalex.org/C33954974","wikidata":"https://www.wikidata.org/wiki/Q486494","display_name":"Sensor fusion","level":2,"score":0.5194000005722046},{"id":"https://openalex.org/C198082294","wikidata":"https://www.wikidata.org/wiki/Q3399648","display_name":"Position (finance)","level":2,"score":0.49880000948905945},{"id":"https://openalex.org/C2778263558","wikidata":"https://www.wikidata.org/wiki/Q46384","display_name":"Microphone","level":3,"score":0.4763000011444092},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.4715000092983246},{"id":"https://openalex.org/C86369673","wikidata":"https://www.wikidata.org/wiki/Q1203659","display_name":"Simultaneous localization and mapping","level":4,"score":0.4465000033378601},{"id":"https://openalex.org/C79403827","wikidata":"https://www.wikidata.org/wiki/Q3988","display_name":"Real-time computing","level":1,"score":0.4187999963760376},{"id":"https://openalex.org/C105339364","wikidata":"https://www.wikidata.org/wiki/Q2297740","display_name":"Software deployment","level":2,"score":0.4162999987602234},{"id":"https://openalex.org/C154586513","wikidata":"https://www.wikidata.org/wiki/Q4420972","display_name":"Tracking system","level":3,"score":0.38280001282691956},{"id":"https://openalex.org/C2775936607","wikidata":"https://www.wikidata.org/wiki/Q466845","display_name":"Tracking (education)","level":2,"score":0.36890000104904175},{"id":"https://openalex.org/C26517878","wikidata":"https://www.wikidata.org/wiki/Q228039","display_name":"Key (lock)","level":2,"score":0.364300012588501},{"id":"https://openalex.org/C2777113093","wikidata":"https://www.wikidata.org/wiki/Q221488","display_name":"Pedestrian","level":2,"score":0.34380000829696655},{"id":"https://openalex.org/C79061980","wikidata":"https://www.wikidata.org/wiki/Q941680","display_name":"Inertial measurement unit","level":2,"score":0.3424000144004822},{"id":"https://openalex.org/C60229501","wikidata":"https://www.wikidata.org/wiki/Q18822","display_name":"Global Positioning System","level":2,"score":0.320499986410141},{"id":"https://openalex.org/C128651787","wikidata":"https://www.wikidata.org/wiki/Q570607","display_name":"Inertial navigation system","level":3,"score":0.3061000108718872},{"id":"https://openalex.org/C159737794","wikidata":"https://www.wikidata.org/wiki/Q124274","display_name":"Azimuth","level":2,"score":0.3012000024318695},{"id":"https://openalex.org/C141353440","wikidata":"https://www.wikidata.org/wiki/Q182221","display_name":"Fuse (electrical)","level":2,"score":0.29010000824928284},{"id":"https://openalex.org/C123046963","wikidata":"https://www.wikidata.org/wiki/Q22664","display_name":"Geographic coordinate system","level":2,"score":0.2736000120639801},{"id":"https://openalex.org/C132525143","wikidata":"https://www.wikidata.org/wiki/Q141488","display_name":"Graph","level":2,"score":0.2703000009059906},{"id":"https://openalex.org/C2777735758","wikidata":"https://www.wikidata.org/wiki/Q817765","display_name":"Path (computing)","level":2,"score":0.2596000134944916},{"id":"https://openalex.org/C3019020692","wikidata":"https://www.wikidata.org/wiki/Q17141406","display_name":"Location tracking","level":2,"score":0.2578999996185303},{"id":"https://openalex.org/C2778603505","wikidata":"https://www.wikidata.org/wiki/Q17141406","display_name":"Positioning system","level":3,"score":0.25760000944137573},{"id":"https://openalex.org/C176217482","wikidata":"https://www.wikidata.org/wiki/Q860554","display_name":"Metric (unit)","level":2,"score":0.25290000438690186}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/ipin66788.2025.11213399","is_oa":false,"landing_page_url":"https://doi.org/10.1109/ipin66788.2025.11213399","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2025 International Conference on Indoor Positioning and Indoor Navigation (IPIN)","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":22,"referenced_works":["https://openalex.org/W1529769492","https://openalex.org/W1550875849","https://openalex.org/W2028082528","https://openalex.org/W2107774107","https://openalex.org/W2171785275","https://openalex.org/W2402514617","https://openalex.org/W2603071509","https://openalex.org/W2963423603","https://openalex.org/W2997884353","https://openalex.org/W3090160518","https://openalex.org/W4200432850","https://openalex.org/W4210478904","https://openalex.org/W4295308449","https://openalex.org/W4312298166","https://openalex.org/W4312943509","https://openalex.org/W4389388878","https://openalex.org/W4389687582","https://openalex.org/W4392981722","https://openalex.org/W4401878706","https://openalex.org/W4403181975","https://openalex.org/W4405304374","https://openalex.org/W4408100091"],"related_works":[],"abstract_inverted_index":{"Indoor":[0],"trajectory":[1,89,200],"mapping":[2],"is":[3,33,65],"essential":[4],"for":[5],"applications":[6,18],"such":[7,39],"as":[8,40,139],"health":[9],"status":[10],"monitoring,":[11],"context-aware":[12],"computing,":[13],"and":[14,56,175,182],"tracking":[15],"systems.":[16],"These":[17,136],"often":[19],"require":[20],"accurate":[21],"location":[22],"information":[23],"in":[24,153],"environments":[25],"where":[26],"the":[27,88,189],"Global":[28],"Navigation":[29],"Satellite":[30],"System":[31],"(GNSS)":[32],"unavailable":[34],"or":[35],"unreliable.":[36],"Infrastructure-free":[37],"approaches,":[38],"inertial":[41],"sensor-based":[42],"Pedestrian":[43],"Dead":[44],"Reckoning":[45],"(PDR),":[46],"have":[47],"gained":[48],"popularity":[49],"due":[50],"to":[51,70,110,128,143,196],"their":[52],"ease":[53],"of":[54,63,79,87,170,177,191],"deployment":[55],"low":[57],"cost.":[58],"However,":[59],"a":[60,117,154,166],"key":[61],"limitation":[62],"PDR":[64,145],"not":[66],"only":[67],"its":[68,77],"susceptibility":[69],"cumulative":[71],"drift":[72],"over":[73],"time":[74],"but":[75],"also":[76],"lack":[78],"absolute":[80,130],"position":[81],"references,":[82],"which":[83],"prevents":[84],"reliable":[85],"alignment":[86],"with":[90,173],"real-world":[91],"coordinates.":[92],"To":[93],"address":[94],"this":[95],"challenge,":[96],"we":[97,122],"propose":[98],"an":[99],"activity-driven":[100,133,193],"audio-IMU":[101],"fusion":[102,163],"solution":[103,164],"that":[104],"uses":[105],"Factor":[106],"Graph":[107],"Optimization":[108],"(FGO)":[109],"accurately":[111],"reconstruct":[112],"indoor":[113,199],"walking":[114],"trajectories":[115],"on":[116],"room-scale":[118],"floor":[119],"plan.":[120],"Specifically,":[121],"use":[123],"two":[124],"fixed":[125],"microphone":[126],"arrays":[127],"estimate":[129],"coordinates":[131],"from":[132],"audio":[134,194],"events.":[135],"events":[137],"act":[138],"sparse,":[140,192],"high-confidence":[141],"anchors":[142],"map":[144],"trajectories.":[146],"We":[147],"validate":[148],"our":[149],"system":[150],"through":[151],"experiments":[152],"6":[155,158],"m":[156,159,181],"\u00d7":[157],"room.":[160],"The":[161,186],"proposed":[162],"achieves":[165],"mean":[167],"positioning":[168],"error":[169],"0.31":[171],"m,":[172,184],"68%":[174],"95%":[176],"errors":[178],"below":[179],"0.38":[180],"0.53":[183],"respectively.":[185],"results":[187],"demonstrate":[188],"potential":[190],"anchoring":[195],"improve":[197],"infrastructure-free":[198],"mapping.":[201]},"counts_by_year":[],"updated_date":"2026-07-14T23:27:15.235271","created_date":"2025-10-28T00:00:00"}
