{"id":"https://openalex.org/W2004957840","doi":"https://doi.org/10.1002/rob.4620020202","title":"Detection of an ellipse by use of a recursive least\u2010squares estimator","display_name":"Detection of an ellipse by use of a recursive least\u2010squares estimator","publication_year":1985,"publication_date":"1985-06-01","ids":{"openalex":"https://openalex.org/W2004957840","doi":"https://doi.org/10.1002/rob.4620020202","mag":"2004957840"},"language":"en","primary_location":{"id":"doi:10.1002/rob.4620020202","is_oa":false,"landing_page_url":"https://doi.org/10.1002/rob.4620020202","pdf_url":null,"source":{"id":"https://openalex.org/S6068926","display_name":"Journal of Robotic Systems","issn_l":"0741-2223","issn":["0741-2223","1097-4563"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310320595","host_organization_name":"Wiley","host_organization_lineage":["https://openalex.org/P4310320595"],"host_organization_lineage_names":["Wiley"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Journal of Robotic Systems","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/A5103431548","display_name":"Tadashi Nagata","orcid":null},"institutions":[{"id":"https://openalex.org/I135598925","display_name":"Kyushu University","ror":"https://ror.org/00p4k0j84","country_code":"JP","type":"education","lineage":["https://openalex.org/I135598925"]}],"countries":["JP"],"is_corresponding":true,"raw_author_name":"Tadashi Nagata","raw_affiliation_strings":["Department of Electrical Engineering, Kyushu University, Fukuoka, Japan","[Department of Electrical Engineering, Kyushu University, Fukuoka, Japan]"],"affiliations":[{"raw_affiliation_string":"Department of Electrical Engineering, Kyushu University, Fukuoka, Japan","institution_ids":["https://openalex.org/I135598925"]},{"raw_affiliation_string":"[Department of Electrical Engineering, Kyushu University, Fukuoka, Japan]","institution_ids":["https://openalex.org/I135598925"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5022181330","display_name":"Hirotoshi Tamura","orcid":null},"institutions":[{"id":"https://openalex.org/I135598925","display_name":"Kyushu University","ror":"https://ror.org/00p4k0j84","country_code":"JP","type":"education","lineage":["https://openalex.org/I135598925"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Hirotoshi Tamura","raw_affiliation_strings":["Department of Electrical Engineering, Kyushu University, Fukuoka, Japan","[Department of Electrical Engineering, Kyushu University, Fukuoka, Japan]"],"affiliations":[{"raw_affiliation_string":"Department of Electrical Engineering, Kyushu University, Fukuoka, Japan","institution_ids":["https://openalex.org/I135598925"]},{"raw_affiliation_string":"[Department of Electrical Engineering, Kyushu University, Fukuoka, Japan]","institution_ids":["https://openalex.org/I135598925"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5109850175","display_name":"Kohichi Ishibashi","orcid":null},"institutions":[{"id":"https://openalex.org/I135598925","display_name":"Kyushu University","ror":"https://ror.org/00p4k0j84","country_code":"JP","type":"education","lineage":["https://openalex.org/I135598925"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Kohichi Ishibashi","raw_affiliation_strings":["Department of Electrical Engineering, Kyushu University, Fukuoka, Japan","[Department of Electrical Engineering, Kyushu University, Fukuoka, Japan]"],"affiliations":[{"raw_affiliation_string":"Department of Electrical Engineering, Kyushu University, Fukuoka, Japan","institution_ids":["https://openalex.org/I135598925"]},{"raw_affiliation_string":"[Department of Electrical Engineering, Kyushu University, Fukuoka, Japan]","institution_ids":["https://openalex.org/I135598925"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":3,"corresponding_author_ids":["https://openalex.org/A5103431548"],"corresponding_institution_ids":["https://openalex.org/I135598925"],"apc_list":null,"apc_paid":null,"fwci":0.6811,"has_fulltext":false,"cited_by_count":40,"citation_normalized_percentile":{"value":0.70639354,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":94},"biblio":{"volume":"2","issue":"2","first_page":"163","last_page":"177"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T12549","display_name":"Image and Object Detection Techniques","score":0.9998999834060669,"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/T12549","display_name":"Image and Object Detection Techniques","score":0.9998999834060669,"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/T13114","display_name":"Image Processing Techniques and Applications","score":0.9940000176429749,"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/T12923","display_name":"Digital Image Processing Techniques","score":0.9868999719619751,"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/ellipse","display_name":"Ellipse","score":0.8010472655296326},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.6756362915039062},{"id":"https://openalex.org/keywords/estimator","display_name":"Estimator","score":0.6683619022369385},{"id":"https://openalex.org/keywords/quadratic-equation","display_name":"Quadratic equation","score":0.46055781841278076},{"id":"https://openalex.org/keywords/least-squares-function-approximation","display_name":"Least-squares function approximation","score":0.44827672839164734},{"id":"https://openalex.org/keywords/feature","display_name":"Feature (linguistics)","score":0.41693180799484253},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.39161020517349243},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.3705676794052124},{"id":"https://openalex.org/keywords/applied-mathematics","display_name":"Applied mathematics","score":0.3634074926376343},{"id":"https://openalex.org/keywords/statistics","display_name":"Statistics","score":0.2657736539840698},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.2512308955192566},{"id":"https://openalex.org/keywords/geometry","display_name":"Geometry","score":0.1394868791103363}],"concepts":[{"id":"https://openalex.org/C74261601","wikidata":"https://www.wikidata.org/wiki/Q40112","display_name":"Ellipse","level":2,"score":0.8010472655296326},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.6756362915039062},{"id":"https://openalex.org/C185429906","wikidata":"https://www.wikidata.org/wiki/Q1130160","display_name":"Estimator","level":2,"score":0.6683619022369385},{"id":"https://openalex.org/C129844170","wikidata":"https://www.wikidata.org/wiki/Q41299","display_name":"Quadratic equation","level":2,"score":0.46055781841278076},{"id":"https://openalex.org/C9936470","wikidata":"https://www.wikidata.org/wiki/Q6510405","display_name":"Least-squares function approximation","level":3,"score":0.44827672839164734},{"id":"https://openalex.org/C2776401178","wikidata":"https://www.wikidata.org/wiki/Q12050496","display_name":"Feature (linguistics)","level":2,"score":0.41693180799484253},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.39161020517349243},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.3705676794052124},{"id":"https://openalex.org/C28826006","wikidata":"https://www.wikidata.org/wiki/Q33521","display_name":"Applied mathematics","level":1,"score":0.3634074926376343},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.2657736539840698},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.2512308955192566},{"id":"https://openalex.org/C2524010","wikidata":"https://www.wikidata.org/wiki/Q8087","display_name":"Geometry","level":1,"score":0.1394868791103363},{"id":"https://openalex.org/C41895202","wikidata":"https://www.wikidata.org/wiki/Q8162","display_name":"Linguistics","level":1,"score":0.0},{"id":"https://openalex.org/C138885662","wikidata":"https://www.wikidata.org/wiki/Q5891","display_name":"Philosophy","level":0,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1002/rob.4620020202","is_oa":false,"landing_page_url":"https://doi.org/10.1002/rob.4620020202","pdf_url":null,"source":{"id":"https://openalex.org/S6068926","display_name":"Journal of Robotic Systems","issn_l":"0741-2223","issn":["0741-2223","1097-4563"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310320595","host_organization_name":"Wiley","host_organization_lineage":["https://openalex.org/P4310320595"],"host_organization_lineage_names":["Wiley"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Journal of Robotic Systems","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":3,"referenced_works":["https://openalex.org/W1953654329","https://openalex.org/W1965840180","https://openalex.org/W1980065040"],"related_works":["https://openalex.org/W2371136327","https://openalex.org/W4293234107","https://openalex.org/W2370549269","https://openalex.org/W2386824811","https://openalex.org/W2354618530","https://openalex.org/W2081226903","https://openalex.org/W2363452175","https://openalex.org/W4299069794","https://openalex.org/W2796380742","https://openalex.org/W1990764232"],"abstract_inverted_index":{"Abstract":[0],"A":[1,111],"method":[2,20,60,116],"for":[3,64],"detecting":[4],"an":[5,8,40,101,108],"ellipse":[6,102],"in":[7,29,80,85],"image":[9,41],"by":[10,34,57,103],"use":[11],"of":[12,27,39,107,114,123],"a":[13,30,45,62,76,86],"recursive":[14,77],"least\u2010squares":[15,78],"estimator":[16,79],"is":[17,21,42,55,67,93,100,117],"described.":[18],"This":[19],"based":[22],"on":[23,70],"classifying":[24],"the":[25,35,49,58,71,83,98,105,118,121,124],"behavior":[26,106],"parameters":[28,84],"quadratic":[31,87],"equation":[32,88],"estimated":[33,90,109],"estimator.":[36],"The":[37],"segmentation":[38],"executed":[43],"using":[44],"statistical":[46],"measure":[47],"called":[48],"adjacent":[50],"separability":[51],"factor.":[52],"Noise":[53],"elimination":[54],"performed":[56],"expansion\u2010contraction":[59],"and":[61,82,120],"contour":[63,72,99],"each":[65],"region":[66],"extracted.":[68],"Points":[69],"are":[73,89],"supplied":[74],"to":[75,95],"succession":[81],"recursively.":[91],"It":[92],"possible":[94],"decide":[96],"whether":[97],"analyzing":[104],"parameter.":[110],"main":[112],"feature":[113],"this":[115],"generality":[119],"simplicity":[122],"procedure.":[125]},"counts_by_year":[{"year":2013,"cited_by_count":1}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}
