{"id":"https://openalex.org/W4389887810","doi":"https://doi.org/10.1109/tim.2023.3344148","title":"Shadow-Based Lightsource Localization With Direct Camera\u2013Lightsource Geometry","display_name":"Shadow-Based Lightsource Localization With Direct Camera\u2013Lightsource Geometry","publication_year":2023,"publication_date":"2023-12-18","ids":{"openalex":"https://openalex.org/W4389887810","doi":"https://doi.org/10.1109/tim.2023.3344148"},"language":"en","primary_location":{"id":"doi:10.1109/tim.2023.3344148","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tim.2023.3344148","pdf_url":null,"source":{"id":"https://openalex.org/S10892749","display_name":"IEEE Transactions on Instrumentation and Measurement","issn_l":"0018-9456","issn":["0018-9456","1557-9662"],"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 Transactions on Instrumentation and Measurement","raw_type":"journal-article"},"type":"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/A5091127720","display_name":"Wei Jin","orcid":"https://orcid.org/0000-0001-6970-2658"},"institutions":[{"id":"https://openalex.org/I80947539","display_name":"Fuzhou University","ror":"https://ror.org/011xvna82","country_code":"CN","type":"education","lineage":["https://openalex.org/I80947539"]}],"countries":["CN"],"is_corresponding":true,"raw_author_name":"Wei Jin","raw_affiliation_strings":["School of Mechanical Engineering and Automation, Fuzhou University, Fuzhou, China"],"affiliations":[{"raw_affiliation_string":"School of Mechanical Engineering and Automation, Fuzhou University, Fuzhou, China","institution_ids":["https://openalex.org/I80947539"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5011807899","display_name":"Mingzhu Zhu","orcid":"https://orcid.org/0000-0002-3299-2441"},"institutions":[{"id":"https://openalex.org/I80947539","display_name":"Fuzhou University","ror":"https://ror.org/011xvna82","country_code":"CN","type":"education","lineage":["https://openalex.org/I80947539"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Mingzhu Zhu","raw_affiliation_strings":["School of Mechanical Engineering and Automation, Fuzhou University, Fuzhou, China"],"affiliations":[{"raw_affiliation_string":"School of Mechanical Engineering and Automation, Fuzhou University, Fuzhou, China","institution_ids":["https://openalex.org/I80947539"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5007897707","display_name":"Jiantao Liu","orcid":"https://orcid.org/0000-0002-7066-0982"},"institutions":[{"id":"https://openalex.org/I4210095221","display_name":"Xiamen Institute of Building Research Group","ror":"https://ror.org/00pdf6q45","country_code":"CN","type":"facility","lineage":["https://openalex.org/I4210095221"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Jiantao Liu","raw_affiliation_strings":["Xiamen Port Holding Group Company Ltd., Xiamen, China"],"affiliations":[{"raw_affiliation_string":"Xiamen Port Holding Group Company Ltd., Xiamen, China","institution_ids":["https://openalex.org/I4210095221"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5045379870","display_name":"Bingwei He","orcid":"https://orcid.org/0000-0002-4386-8542"},"institutions":[{"id":"https://openalex.org/I80947539","display_name":"Fuzhou University","ror":"https://ror.org/011xvna82","country_code":"CN","type":"education","lineage":["https://openalex.org/I80947539"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Bingwei He","raw_affiliation_strings":["School of Mechanical Engineering and Automation, Fuzhou University, Fuzhou, China"],"affiliations":[{"raw_affiliation_string":"School of Mechanical Engineering and Automation, Fuzhou University, Fuzhou, China","institution_ids":["https://openalex.org/I80947539"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5073958329","display_name":"Junzhi Yu","orcid":"https://orcid.org/0000-0002-6347-572X"},"institutions":[{"id":"https://openalex.org/I20231570","display_name":"Peking University","ror":"https://ror.org/02v51f717","country_code":"CN","type":"education","lineage":["https://openalex.org/I20231570"]},{"id":"https://openalex.org/I4391767778","display_name":"State Key Laboratory of Turbulence and Complex Systems","ror":"https://ror.org/04km98768","country_code":null,"type":"facility","lineage":["https://openalex.org/I20231570","https://openalex.org/I4391767778"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Junzhi Yu","raw_affiliation_strings":["Department of Advanced Manufacturing and Robotics, College of Engineering, State Key Laboratory for Turbulence and Complex Systems, Peking University, Beijing, China"],"affiliations":[{"raw_affiliation_string":"Department of Advanced Manufacturing and Robotics, College of Engineering, State Key Laboratory for Turbulence and Complex Systems, Peking University, Beijing, China","institution_ids":["https://openalex.org/I20231570","https://openalex.org/I4391767778"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":5,"corresponding_author_ids":["https://openalex.org/A5091127720"],"corresponding_institution_ids":["https://openalex.org/I80947539"],"apc_list":null,"apc_paid":null,"fwci":1.8762,"has_fulltext":false,"cited_by_count":4,"citation_normalized_percentile":{"value":0.88440802,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":90,"max":97},"biblio":{"volume":"73","issue":null,"first_page":"1","last_page":"12"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T12153","display_name":"Advanced Optical Sensing Technologies","score":0.9984999895095825,"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"}},"topics":[{"id":"https://openalex.org/T12153","display_name":"Advanced Optical Sensing Technologies","score":0.9984999895095825,"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/T11408","display_name":"Advanced Optical Imaging Technologies","score":0.9890000224113464,"subfield":{"id":"https://openalex.org/subfields/2214","display_name":"Media Technology"},"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/T11569","display_name":"Optical Coherence Tomography Applications","score":0.9825000166893005,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/computer-vision","display_name":"Computer vision","score":0.5933479070663452},{"id":"https://openalex.org/keywords/shadow","display_name":"Shadow (psychology)","score":0.5874354243278503},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.5260172486305237},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.44323962926864624},{"id":"https://openalex.org/keywords/geometry","display_name":"Geometry","score":0.4119173586368561},{"id":"https://openalex.org/keywords/computer-graphics","display_name":"Computer graphics (images)","score":0.40262240171432495},{"id":"https://openalex.org/keywords/optics","display_name":"Optics","score":0.34735116362571716},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.3134598135948181},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.23758423328399658}],"concepts":[{"id":"https://openalex.org/C31972630","wikidata":"https://www.wikidata.org/wiki/Q844240","display_name":"Computer vision","level":1,"score":0.5933479070663452},{"id":"https://openalex.org/C117797892","wikidata":"https://www.wikidata.org/wiki/Q286363","display_name":"Shadow (psychology)","level":2,"score":0.5874354243278503},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.5260172486305237},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.44323962926864624},{"id":"https://openalex.org/C2524010","wikidata":"https://www.wikidata.org/wiki/Q8087","display_name":"Geometry","level":1,"score":0.4119173586368561},{"id":"https://openalex.org/C121684516","wikidata":"https://www.wikidata.org/wiki/Q7600677","display_name":"Computer graphics (images)","level":1,"score":0.40262240171432495},{"id":"https://openalex.org/C120665830","wikidata":"https://www.wikidata.org/wiki/Q14620","display_name":"Optics","level":1,"score":0.34735116362571716},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.3134598135948181},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.23758423328399658},{"id":"https://openalex.org/C542102704","wikidata":"https://www.wikidata.org/wiki/Q183257","display_name":"Psychotherapist","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}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/tim.2023.3344148","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tim.2023.3344148","pdf_url":null,"source":{"id":"https://openalex.org/S10892749","display_name":"IEEE Transactions on Instrumentation and Measurement","issn_l":"0018-9456","issn":["0018-9456","1557-9662"],"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 Transactions on Instrumentation and Measurement","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[{"id":"https://openalex.org/G1062998902","display_name":null,"funder_award_id":"62373109","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G5380725702","display_name":null,"funder_award_id":"2022J05111","funder_id":"https://openalex.org/F4320321878","funder_display_name":"Natural Science Foundation of Fujian Province"}],"funders":[{"id":"https://openalex.org/F4320321001","display_name":"National Natural Science Foundation of China","ror":"https://ror.org/01h0zpd94"},{"id":"https://openalex.org/F4320321878","display_name":"Natural Science Foundation of Fujian Province","ror":null}],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":33,"referenced_works":["https://openalex.org/W1607728245","https://openalex.org/W1975089519","https://openalex.org/W1988874269","https://openalex.org/W1994349244","https://openalex.org/W2007735572","https://openalex.org/W2033819227","https://openalex.org/W2038405710","https://openalex.org/W2065924844","https://openalex.org/W2082017974","https://openalex.org/W2085608034","https://openalex.org/W2105364207","https://openalex.org/W2121649761","https://openalex.org/W2140427427","https://openalex.org/W2152005177","https://openalex.org/W2167667767","https://openalex.org/W2460955018","https://openalex.org/W2726198058","https://openalex.org/W2787460109","https://openalex.org/W2887975641","https://openalex.org/W2888297599","https://openalex.org/W2894559805","https://openalex.org/W2902161925","https://openalex.org/W2912670559","https://openalex.org/W3003551007","https://openalex.org/W3003846825","https://openalex.org/W3010705385","https://openalex.org/W3155728514","https://openalex.org/W3179033503","https://openalex.org/W3185488590","https://openalex.org/W4210458497","https://openalex.org/W4250666038","https://openalex.org/W6684214436","https://openalex.org/W6684221253"],"related_works":["https://openalex.org/W2893218741","https://openalex.org/W2558319350","https://openalex.org/W1492594177","https://openalex.org/W1842742976","https://openalex.org/W2803235238","https://openalex.org/W399661440","https://openalex.org/W410356389","https://openalex.org/W639782700","https://openalex.org/W1992929574","https://openalex.org/W2355578807"],"abstract_inverted_index":{"Accurate":[0],"lightsource":[1,35,78,115],"location":[2],"or":[3,69],"direction":[4],"is":[5,24,110,160],"important":[6],"in":[7,46,102],"shape":[8],"from":[9],"shading":[10],"(SFS)":[11],"and":[12,48,90,135,140,153,163],"photometric":[13],"stereo":[14],"(PS).":[15],"Tracking":[16],"interested":[17],"object":[18],"by":[19],"the":[20,52,61,66,85,96,103,114,120,156],"lightsources":[21],"on":[22],"it":[23,159],"also":[25],"a":[26,77],"widely":[27],"used":[28,94],"positioning":[29],"scheme.":[30],"However,":[31],"existing":[32],"methods":[33],"for":[34,40],"localization":[36,79,116],"are":[37,43,93,138],"primarily":[38],"designed":[39],"calibration.":[41],"They":[42],"usually":[44],"inferior":[45],"speed":[47],"accuracy,":[49],"because":[50],"of":[51,108,124],"intermedium":[53],"geometry":[54,63,107],"they":[55,58],"introduced.":[56],"Specifically,":[57],"must":[59],"recover":[60,84],"camera\u2013intermedium":[62],"before":[64],"gaining":[65],"desired":[67],"intermedium\u2013lightsource":[68],"camera\u2013lightsource":[70,86],"geometries.":[71],"In":[72],"this":[73],"article,":[74],"we":[75],"propose":[76],"method":[80,148],"that":[81,146],"can":[82],"directly":[83],"geometry.":[87],"A":[88],"sphere":[89,109],"its":[91],"shadow":[92],"as":[95],"intermediums,":[97],"but":[98],"their":[99],"roles":[100],"stay":[101],"images.":[104],"The":[105,128,142],"parallax":[106],"investigated":[111],"to":[112],"transfer":[113],"problem":[117],"into":[118],"solving":[119],"outer":[121],"bitangents\u2019":[122],"intersection":[123],"two":[125],"visible":[126],"conics.":[127],"solution":[129],"cases,":[130,132],"degenerated":[131],"error":[133],"distributions,":[134],"other":[136],"details":[137],"discussed":[139],"tested.":[141],"experiment":[143],"has":[144,149],"demonstrated":[145],"our":[147],"significantly":[150],"better":[151],"accuracy":[152],"robustness":[154],"than":[155],"state-of-the-art,":[157],"while":[158],"obviously":[161],"low-cost":[162],"lightweight.":[164]},"counts_by_year":[{"year":2025,"cited_by_count":3},{"year":2024,"cited_by_count":1}],"updated_date":"2026-03-27T05:58:40.876381","created_date":"2025-10-10T00:00:00"}