{"id":"https://openalex.org/W2099790294","doi":"https://doi.org/10.1109/icpr.2006.347","title":"Camera Calibration from Two Shadow Trajectories","display_name":"Camera Calibration from Two Shadow Trajectories","publication_year":2006,"publication_date":"2006-01-01","ids":{"openalex":"https://openalex.org/W2099790294","doi":"https://doi.org/10.1109/icpr.2006.347","mag":"2099790294"},"language":"en","primary_location":{"id":"doi:10.1109/icpr.2006.347","doi":"https://doi.org/10.1109/icpr.2006.347","is_oa":false,"landing_page_url":"https://doi.org/10.1109/icpr.2006.347","pdf_url":null,"source":{"id":"https://openalex.org/S4393916651","display_name":"Proceedings - International Conference on Pattern Recognition/Proceedings/International Conference on Pattern Recognition","issn_l":"1041-3278","issn":["1041-3278","1051-4651"],"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":["jufo-1","norway-1"],"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"conference"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"18th International Conference on Pattern Recognition (ICPR'06)","raw_type":"proceedings-article"},"volume":null,"type":"conference-paper","is_traditional":true,"indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"https://stars.library.ucf.edu/scopus2000/8095","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5086552576","display_name":"Fei Lu","orcid":"https://orcid.org/0000-0002-2542-1034","observed_orcids":["https://orcid.org/0000-0002-2542-1034"]},"institutions":[{"id":"https://openalex.org/I106165777","display_name":"University of Central Florida","ror":"https://ror.org/036nfer12","country_code":"US","type":"education","lineage":["https://openalex.org/I106165777"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Fei Lu","raw_affiliation_strings":["Computational Imaging Laboratory, University of Central Florida, USA","Comput. Imaging Lab., Central Florida Univ., Orlando, FL"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Computational Imaging Laboratory, University of Central Florida, USA","institution_ids":["https://openalex.org/I106165777"]},{"raw_affiliation_string":"Comput. Imaging Lab., Central Florida Univ., Orlando, FL","institution_ids":["https://openalex.org/I106165777"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5068837264","display_name":"Xiaochun Cao","orcid":"https://orcid.org/0000-0001-7141-708X","observed_orcids":["https://orcid.org/0000-0001-7141-708X"]},"institutions":[{"id":"https://openalex.org/I106165777","display_name":"University of Central Florida","ror":"https://ror.org/036nfer12","country_code":"US","type":"education","lineage":["https://openalex.org/I106165777"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Xiaochun Cao","raw_affiliation_strings":["Computational Imaging Laboratory, University of Central Florida, USA","Comput. Imaging Lab., Central Florida Univ., Orlando, FL"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Computational Imaging Laboratory, University of Central Florida, USA","institution_ids":["https://openalex.org/I106165777"]},{"raw_affiliation_string":"Comput. Imaging Lab., Central Florida Univ., Orlando, FL","institution_ids":["https://openalex.org/I106165777"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5089344406","display_name":"Yuping Shen","orcid":"https://orcid.org/0000-0002-0732-8450","observed_orcids":["https://orcid.org/0000-0002-0732-8450"]},"institutions":[{"id":"https://openalex.org/I106165777","display_name":"University of Central Florida","ror":"https://ror.org/036nfer12","country_code":"US","type":"education","lineage":["https://openalex.org/I106165777"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Yuping Shen","raw_affiliation_strings":["Computational Imaging Laboratory, University of Central Florida, USA","Comput. Imaging Lab., Central Florida Univ., Orlando, FL"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Computational Imaging Laboratory, University of Central Florida, USA","institution_ids":["https://openalex.org/I106165777"]},{"raw_affiliation_string":"Comput. Imaging Lab., Central Florida Univ., Orlando, FL","institution_ids":["https://openalex.org/I106165777"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5076117344","display_name":"Hassan Foroosh","orcid":"https://orcid.org/0000-0002-7601-8165","observed_orcids":["https://orcid.org/0000-0002-7601-8165"]},"institutions":[{"id":"https://openalex.org/I106165777","display_name":"University of Central Florida","ror":"https://ror.org/036nfer12","country_code":"US","type":"education","lineage":["https://openalex.org/I106165777"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"H. Foroosh","raw_affiliation_strings":["Computational Imaging Laboratory, University of Central Florida, USA","Comput. Imaging Lab., Central Florida Univ., Orlando, FL"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Computational Imaging Laboratory, University of Central Florida, USA","institution_ids":["https://openalex.org/I106165777"]},{"raw_affiliation_string":"Comput. Imaging Lab., Central Florida Univ., Orlando, FL","institution_ids":["https://openalex.org/I106165777"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I106165777"],"apc_list":null,"apc_paid":null,"fwci":1.1184,"has_fulltext":false,"cited_by_count":12,"citation_normalized_percentile":{"value":0.7381892,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":88,"max":97},"biblio":{"volume":null,"issue":null,"first_page":"1","last_page":"4"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10531","display_name":"Advanced Vision and Imaging","score":0.8003000020980835,"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/T10531","display_name":"Advanced Vision and Imaging","score":0.8003000020980835,"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/T10638","display_name":"Optical measurement and interference techniques","score":0.14920000731945038,"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/T12549","display_name":"Image and Object Detection Techniques","score":0.009399999864399433,"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/camera-calibration","display_name":"camera calibration","score":0.996999979019165},{"id":"https://openalex.org/keywords/cast-shadows","display_name":"cast shadows","score":0.8069999814033508},{"id":"https://openalex.org/keywords/principal-point-estimation","display_name":"principal point estimation","score":0.7850000262260437},{"id":"https://openalex.org/keywords/intrinsic-camera-parameters","display_name":"camera intrinsic parameters","score":0.8169999718666077},{"id":"https://openalex.org/keywords/camera-extrinsic-parameters","display_name":"camera extrinsic parameters","score":0.9890000224113464}],"concepts":[{"id":"https://openalex.org/C117797892","wikidata":"https://www.wikidata.org/wiki/Q286363","display_name":"Shadow (psychology)","level":2,"score":0.830701470375061},{"id":"https://openalex.org/C31972630","wikidata":"https://www.wikidata.org/wiki/Q844240","display_name":"Computer vision","level":1,"score":0.8003038167953491},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.7618417739868164},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6483069658279419},{"id":"https://openalex.org/C165838908","wikidata":"https://www.wikidata.org/wiki/Q736777","display_name":"Calibration","level":2,"score":0.581219494342804},{"id":"https://openalex.org/C2781238097","wikidata":"https://www.wikidata.org/wiki/Q175026","display_name":"Object (grammar)","level":2,"score":0.5563499331474304},{"id":"https://openalex.org/C110898773","wikidata":"https://www.wikidata.org/wiki/Q2933935","display_name":"Camera resectioning","level":2,"score":0.5561037063598633},{"id":"https://openalex.org/C28719098","wikidata":"https://www.wikidata.org/wiki/Q44946","display_name":"Point (geometry)","level":2,"score":0.5209609270095825},{"id":"https://openalex.org/C198352243","wikidata":"https://www.wikidata.org/wiki/Q37105","display_name":"Line (geometry)","level":2,"score":0.507401168346405},{"id":"https://openalex.org/C115961682","wikidata":"https://www.wikidata.org/wiki/Q860623","display_name":"Image (mathematics)","level":2,"score":0.4736536741256714},{"id":"https://openalex.org/C94816000","wikidata":"https://www.wikidata.org/wiki/Q5026006","display_name":"Camera auto-calibration","level":3,"score":0.46678483486175537},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.2666166126728058},{"id":"https://openalex.org/C2524010","wikidata":"https://www.wikidata.org/wiki/Q8087","display_name":"Geometry","level":1,"score":0.07056742906570435},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.06423461437225342},{"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":3,"locations":[{"id":"doi:10.1109/icpr.2006.347","doi":"https://doi.org/10.1109/icpr.2006.347","is_oa":false,"landing_page_url":"https://doi.org/10.1109/icpr.2006.347","pdf_url":null,"source":{"id":"https://openalex.org/S4393916651","display_name":"Proceedings - International Conference on Pattern Recognition/Proceedings/International Conference on Pattern Recognition","issn_l":"1041-3278","issn":["1041-3278","1051-4651"],"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":["jufo-1","norway-1"],"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"conference"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"18th International Conference on Pattern Recognition (ICPR'06)","raw_type":"proceedings-article"},{"id":"pmh:oai:CiteSeerX.psu:10.1.1.418.3909","doi":null,"is_oa":false,"landing_page_url":"http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.418.3909","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"http://cil.cs.ucf.edu/pdf/lu_icpr_shadows.pdf","raw_type":"text"},{"id":"pmh:oai:stars.library.ucf.edu:scopus2000-9094","doi":null,"is_oa":true,"landing_page_url":"https://stars.library.ucf.edu/scopus2000/8095","pdf_url":null,"source":{"id":"https://openalex.org/S4210172555","display_name":"Journal of International Crisis and Risk Communication Research","issn_l":"2576-0017","issn":["2576-0017","2576-0025"],"is_oa":true,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","vabb-shw"],"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"journal"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Scopus Export 2000s","raw_type":"text"}],"best_oa_location":{"id":"pmh:oai:stars.library.ucf.edu:scopus2000-9094","doi":null,"is_oa":true,"landing_page_url":"https://stars.library.ucf.edu/scopus2000/8095","pdf_url":null,"source":{"id":"https://openalex.org/S4210172555","display_name":"Journal of International Crisis and Risk Communication Research","issn_l":"2576-0017","issn":["2576-0017","2576-0025"],"is_oa":true,"is_in_doaj":false,"is_core":true,"listed_in":["cwts-core","vabb-shw"],"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"journal"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Scopus Export 2000s","raw_type":"text"},"sustainable_development_goals":[],"study_designs":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":11,"referenced_works":["https://openalex.org/W136050693","https://openalex.org/W2033819227","https://openalex.org/W2098627874","https://openalex.org/W2111151479","https://openalex.org/W2124535811","https://openalex.org/W2127970077","https://openalex.org/W2154215478","https://openalex.org/W2159128898","https://openalex.org/W2163155500","https://openalex.org/W2167667767","https://openalex.org/W3021282624"],"related_works":["https://openalex.org/W7095696192","https://openalex.org/W2098627874","https://openalex.org/W2164399058","https://openalex.org/W7099435824","https://openalex.org/W2125367740","https://openalex.org/W2154215478","https://openalex.org/W1592174025","https://openalex.org/W7097916778","https://openalex.org/W2004707373","https://openalex.org/W2108752147"],"abstract_inverted_index":{"We":[0,47,101],"introduce":[1],"an":[2,104],"efficient":[3],"method":[4,28],"for":[5],"recovering":[6],"the":[7,12,33,45,50,62,71,76,80,114,120],"camera":[8,63],"parameters":[9,67],"automatically":[10],"from":[11,56,108],"cast":[13],"shadows":[14,109],"of":[15,79,99],"two":[16],"3D":[17],"points":[18],"observed":[19],"over":[20],"time.":[21],"Compared":[22],"to":[23,41,106],"previous":[24],"related":[25],"work,":[26],"our":[27],"has":[29],"less":[30],"restrictions":[31],"in":[32,44,119],"sense":[34],"that":[35],"object-to-shadow":[36],"correspondences":[37],"do":[38],"not":[39,117],"have":[40],"be":[42,54],"available":[43],"image.":[46],"demonstrate":[48],"how":[49,61],"horizon":[51],"line":[52],"may":[53],"recovered":[55],"only":[57,110],"shadow":[58],"points,":[59],"and":[60,65,74,91,94],"intrinsic":[64],"extrinsic":[66],"are":[68],"determined":[69],"using":[70],"pole-polar":[72],"relationship":[73],"minimizing":[75],"algebraic":[77],"distance":[78],"principal":[81],"point.":[82],"The":[83],"approach":[84],"is":[85,116],"fully":[86],"validated":[87],"on":[88],"both":[89],"synthetic":[90],"real":[92],"data,":[93],"tested":[95],"against":[96],"various":[97],"sources":[98],"error.":[100],"finally":[102],"present":[103],"application":[105],"metrology":[107],"-":[111],"i.e.":[112],"when":[113],"object":[115],"visible":[118],"image":[121]},"counts_by_year":[{"year":2020,"cited_by_count":1},{"year":2014,"cited_by_count":4},{"year":2012,"cited_by_count":1}],"updated_date":"2026-10-16T09:59:22.235173","created_date":"2016-06-24T00:00:00"}