{"id":"https://openalex.org/W4395029393","doi":"https://doi.org/10.1109/percomworkshops59983.2024.10503176","title":"Camera-Based Position Estimation using Frequency-Multiplexed Luminance Gradient","display_name":"Camera-Based Position Estimation using Frequency-Multiplexed Luminance Gradient","publication_year":2024,"publication_date":"2024-03-11","ids":{"openalex":"https://openalex.org/W4395029393","doi":"https://doi.org/10.1109/percomworkshops59983.2024.10503176"},"language":"en","primary_location":{"id":"doi:10.1109/percomworkshops59983.2024.10503176","is_oa":false,"landing_page_url":"https://doi.org/10.1109/percomworkshops59983.2024.10503176","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2024 IEEE International Conference on Pervasive Computing and Communications Workshops and other Affiliated Events (PerCom Workshops)","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/A5102300480","display_name":"Shota Shimada","orcid":null},"institutions":[{"id":"https://openalex.org/I4210096607","display_name":"Line Corporation (Japan)","ror":"https://ror.org/00qg8pm87","country_code":"JP","type":"company","lineage":["https://openalex.org/I4210096607","https://openalex.org/I60922564"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Shota Shimada","raw_affiliation_strings":["LY Corporation,Tokyo,Japan","LY Corporation, Tokyo, Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"LY Corporation,Tokyo,Japan","institution_ids":["https://openalex.org/I4210096607"]},{"raw_affiliation_string":"LY Corporation, Tokyo, Japan","institution_ids":[]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5102737863","display_name":"Hiroaki Murakami","orcid":"https://orcid.org/0000-0002-4691-7696"},"institutions":[{"id":"https://openalex.org/I74801974","display_name":"The University of Tokyo","ror":"https://ror.org/057zh3y96","country_code":"JP","type":"education","lineage":["https://openalex.org/I74801974"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Hiroaki Murakami","raw_affiliation_strings":["The University of Tokyo,Tokyo,Japan","The University of Tokyo, Tokyo, Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"The University of Tokyo,Tokyo,Japan","institution_ids":["https://openalex.org/I74801974"]},{"raw_affiliation_string":"The University of Tokyo, Tokyo, Japan","institution_ids":["https://openalex.org/I74801974"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5043621466","display_name":"Kota Tsubouchi","orcid":"https://orcid.org/0000-0002-7753-8939"},"institutions":[{"id":"https://openalex.org/I4210096607","display_name":"Line Corporation (Japan)","ror":"https://ror.org/00qg8pm87","country_code":"JP","type":"company","lineage":["https://openalex.org/I4210096607","https://openalex.org/I60922564"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Kota Tsubouchi","raw_affiliation_strings":["LY Corporation,Tokyo,Japan","LY Corporation, Tokyo, Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"LY Corporation,Tokyo,Japan","institution_ids":["https://openalex.org/I4210096607"]},{"raw_affiliation_string":"LY Corporation, Tokyo, Japan","institution_ids":[]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5027448650","display_name":"Takuya Sasatani","orcid":"https://orcid.org/0000-0003-2268-6106"},"institutions":[{"id":"https://openalex.org/I74801974","display_name":"The University of Tokyo","ror":"https://ror.org/057zh3y96","country_code":"JP","type":"education","lineage":["https://openalex.org/I74801974"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Takuya Sasatani","raw_affiliation_strings":["The University of Tokyo,Tokyo,Japan","The University of Tokyo, Tokyo, Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"The University of Tokyo,Tokyo,Japan","institution_ids":["https://openalex.org/I74801974"]},{"raw_affiliation_string":"The University of Tokyo, Tokyo, Japan","institution_ids":["https://openalex.org/I74801974"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5069381472","display_name":"Yoshihiro Kawahara","orcid":"https://orcid.org/0000-0002-0310-2577"},"institutions":[{"id":"https://openalex.org/I74801974","display_name":"The University of Tokyo","ror":"https://ror.org/057zh3y96","country_code":"JP","type":"education","lineage":["https://openalex.org/I74801974"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Yoshihiro Kawahara","raw_affiliation_strings":["The University of Tokyo,Tokyo,Japan","The University of Tokyo, Tokyo, Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"The University of Tokyo,Tokyo,Japan","institution_ids":["https://openalex.org/I74801974"]},{"raw_affiliation_string":"The University of Tokyo, Tokyo, Japan","institution_ids":["https://openalex.org/I74801974"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":null,"has_fulltext":false,"cited_by_count":2,"citation_normalized_percentile":null,"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":"475","last_page":"480"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10191","display_name":"Robotics and Sensor-Based Localization","score":0.996999979019165,"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"}},"topics":[{"id":"https://openalex.org/T10191","display_name":"Robotics and Sensor-Based Localization","score":0.996999979019165,"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"}},{"id":"https://openalex.org/T12153","display_name":"Advanced Optical Sensing Technologies","score":0.9952999949455261,"subfield":{"id":"https://openalex.org/subfields/3105","display_name":"Instrumentation"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10331","display_name":"Video Surveillance and Tracking Methods","score":0.9936000108718872,"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/luminance","display_name":"Luminance","score":0.7404649257659912},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.6660448908805847},{"id":"https://openalex.org/keywords/position","display_name":"Position (finance)","score":0.6617036461830139},{"id":"https://openalex.org/keywords/computer-vision","display_name":"Computer vision","score":0.6096389889717102},{"id":"https://openalex.org/keywords/multiplexing","display_name":"Multiplexing","score":0.5231841206550598},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.5186478495597839},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.18100744485855103}],"concepts":[{"id":"https://openalex.org/C73313986","wikidata":"https://www.wikidata.org/wiki/Q355386","display_name":"Luminance","level":2,"score":0.7404649257659912},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6660448908805847},{"id":"https://openalex.org/C198082294","wikidata":"https://www.wikidata.org/wiki/Q3399648","display_name":"Position (finance)","level":2,"score":0.6617036461830139},{"id":"https://openalex.org/C31972630","wikidata":"https://www.wikidata.org/wiki/Q844240","display_name":"Computer vision","level":1,"score":0.6096389889717102},{"id":"https://openalex.org/C19275194","wikidata":"https://www.wikidata.org/wiki/Q222903","display_name":"Multiplexing","level":2,"score":0.5231841206550598},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.5186478495597839},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.18100744485855103},{"id":"https://openalex.org/C10138342","wikidata":"https://www.wikidata.org/wiki/Q43015","display_name":"Finance","level":1,"score":0.0},{"id":"https://openalex.org/C162324750","wikidata":"https://www.wikidata.org/wiki/Q8134","display_name":"Economics","level":0,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/percomworkshops59983.2024.10503176","is_oa":false,"landing_page_url":"https://doi.org/10.1109/percomworkshops59983.2024.10503176","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2024 IEEE International Conference on Pervasive Computing and Communications Workshops and other Affiliated Events (PerCom Workshops)","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[{"display_name":"Affordable and clean energy","id":"https://metadata.un.org/sdg/7","score":0.6200000047683716}],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":17,"referenced_works":["https://openalex.org/W2040171232","https://openalex.org/W2042515517","https://openalex.org/W2057323529","https://openalex.org/W2081004296","https://openalex.org/W2105308437","https://openalex.org/W2626824834","https://openalex.org/W2898006772","https://openalex.org/W2908549385","https://openalex.org/W2947943031","https://openalex.org/W2957372878","https://openalex.org/W3010895094","https://openalex.org/W3034475678","https://openalex.org/W4246923912","https://openalex.org/W4280581474","https://openalex.org/W4306179722","https://openalex.org/W4312820114","https://openalex.org/W4381746865"],"related_works":["https://openalex.org/W2772917594","https://openalex.org/W2036807459","https://openalex.org/W2058170566","https://openalex.org/W2755342338","https://openalex.org/W2166024367","https://openalex.org/W3116076068","https://openalex.org/W2229312674","https://openalex.org/W2951359407","https://openalex.org/W2079911747","https://openalex.org/W1969923398"],"abstract_inverted_index":{"We":[0],"present":[1],"a":[2,39,120,123,131,138],"new":[3],"indoor":[4,151],"positioning":[5,135],"method":[6,32],"to":[7],"overcome":[8],"the":[9,44,49,53,62,66,80,101,107],"challenges":[10],"faced":[11],"by":[12,51,65],"Visible":[13],"Light":[14],"Positioning":[15],"(VLP),":[16],"specifically":[17],"its":[18,145],"dependency":[19],"on":[20,43,61],"multiple":[21],"light":[22,59,89],"sources":[23],"and":[24,55,76,84,114,137,147],"constraints":[25],"in":[26,119,130],"environments":[27],"with":[28,86,122],"high":[29],"ceilings.":[30],"Our":[31],"employs":[33],"omni-directional":[34],"LEDs,":[35],"each":[36],"modulated":[37,104],"at":[38],"unique":[40],"frequency,":[41],"mounted":[42],"ceiling.":[45],"The":[46,91],"system":[47],"calculates":[48],"position":[50],"analyzing":[52],"luminance":[54],"gradient":[56],"of":[57,82,94,103,109],"diffused":[58],"reflected":[60],"ceiling,":[63],"captured":[64],"user\u2019s":[67],"smartphone":[68],"front":[69],"camera.":[70],"This":[71],"allows":[72],"for":[73,149],"accurate":[74],"distance":[75],"angle":[77,142],"estimation":[78],"between":[79,127],"point":[81],"interest":[83],"LEDs":[85],"just":[87],"two":[88],"sources.":[90],"inherent":[92],"characteristics":[93],"ceiling":[95],"surfaces,":[96],"being":[97],"largely":[98],"unobstructed,":[99],"enhance":[100],"diffusion":[102],"light,":[105],"enabling":[106],"capture":[108],"signals":[110],"even":[111],"from":[112],"partial":[113],"indirect":[115],"views.":[116],"Experimental":[117],"validation":[118],"setting":[121],"3.":[124],"6m":[125],"baseline":[126],"lights":[128],"resulted":[129],"0.":[132],"462m":[133],"average":[134,140],"error":[136],"21.7-degree":[139],"orientation":[141],"error,":[143],"showcasing":[144],"efficiency":[146],"potential":[148],"broad":[150],"application.":[152]},"counts_by_year":[{"year":2025,"cited_by_count":1},{"year":2024,"cited_by_count":1}],"updated_date":"2026-07-14T23:27:15.235271","created_date":"2025-10-10T00:00:00"}