{"id":"https://openalex.org/W2107132827","doi":"https://doi.org/10.1117/1.3602213","title":"Autofocus method using dual aperture and color filters","display_name":"Autofocus method using dual aperture and color filters","publication_year":2011,"publication_date":"2011-07-01","ids":{"openalex":"https://openalex.org/W2107132827","doi":"https://doi.org/10.1117/1.3602213","mag":"2107132827"},"language":"en","primary_location":{"id":"doi:10.1117/1.3602213","is_oa":false,"landing_page_url":"https://doi.org/10.1117/1.3602213","pdf_url":null,"source":{"id":"https://openalex.org/S158511090","display_name":"Journal of Electronic Imaging","issn_l":"1017-9909","issn":["1017-9909","1560-229X"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310315543","host_organization_name":"SPIE","host_organization_lineage":["https://openalex.org/P4310315543"],"host_organization_lineage_names":["SPIE"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Journal of Electronic Imaging","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/A5074580552","display_name":"Kwanghyun Koh","orcid":null},"institutions":[{"id":"https://openalex.org/I139264467","display_name":"Seoul National University","ror":"https://ror.org/04h9pn542","country_code":"KR","type":"education","lineage":["https://openalex.org/I139264467"]}],"countries":["KR"],"is_corresponding":true,"raw_author_name":"Kwanghyun Koh","raw_affiliation_strings":["Seoul National Univ. (Korea, Republic of)","Seoul National University, School of Electrical Engineering, Room 416-1, Building 302, Mail Stop 041, San 56-1, Shilim-Dong, Kwanak-Gu, Seoul, 151-744, Republic of Korea"],"affiliations":[{"raw_affiliation_string":"Seoul National Univ. (Korea, Republic of)","institution_ids":["https://openalex.org/I139264467"]},{"raw_affiliation_string":"Seoul National University, School of Electrical Engineering, Room 416-1, Building 302, Mail Stop 041, San 56-1, Shilim-Dong, Kwanak-Gu, Seoul, 151-744, Republic of Korea","institution_ids":["https://openalex.org/I139264467"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":["https://openalex.org/A5074580552"],"corresponding_institution_ids":["https://openalex.org/I139264467"],"apc_list":null,"apc_paid":null,"fwci":2.0171,"has_fulltext":false,"cited_by_count":6,"citation_normalized_percentile":{"value":0.8855475,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":96},"biblio":{"volume":"20","issue":"3","first_page":"033002","last_page":"033002"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T13114","display_name":"Image Processing Techniques and Applications","score":1.0,"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"}},"topics":[{"id":"https://openalex.org/T13114","display_name":"Image Processing Techniques and Applications","score":1.0,"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/T11897","display_name":"Digital Holography and Microscopy","score":0.9911999702453613,"subfield":{"id":"https://openalex.org/subfields/3107","display_name":"Atomic and Molecular Physics, and Optics"},"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/T10638","display_name":"Optical measurement and interference techniques","score":0.9873999953269958,"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/autofocus","display_name":"Autofocus","score":0.8099128007888794},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.7234245538711548},{"id":"https://openalex.org/keywords/computer-vision","display_name":"Computer vision","score":0.7005206346511841},{"id":"https://openalex.org/keywords/focus","display_name":"Focus (optics)","score":0.5594761967658997},{"id":"https://openalex.org/keywords/measure","display_name":"Measure (data warehouse)","score":0.5581870675086975},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.5450651049613953},{"id":"https://openalex.org/keywords/color-filter-array","display_name":"Color filter array","score":0.5172765851020813},{"id":"https://openalex.org/keywords/monochromatic-color","display_name":"Monochromatic color","score":0.49974894523620605},{"id":"https://openalex.org/keywords/position","display_name":"Position (finance)","score":0.4729297459125519},{"id":"https://openalex.org/keywords/optics","display_name":"Optics","score":0.33889007568359375},{"id":"https://openalex.org/keywords/color-gel","display_name":"Color gel","score":0.23065787553787231},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.15570718050003052}],"concepts":[{"id":"https://openalex.org/C103764139","wikidata":"https://www.wikidata.org/wiki/Q210008","display_name":"Autofocus","level":3,"score":0.8099128007888794},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.7234245538711548},{"id":"https://openalex.org/C31972630","wikidata":"https://www.wikidata.org/wiki/Q844240","display_name":"Computer vision","level":1,"score":0.7005206346511841},{"id":"https://openalex.org/C192209626","wikidata":"https://www.wikidata.org/wiki/Q190909","display_name":"Focus (optics)","level":2,"score":0.5594761967658997},{"id":"https://openalex.org/C2780009758","wikidata":"https://www.wikidata.org/wiki/Q6804172","display_name":"Measure (data warehouse)","level":2,"score":0.5581870675086975},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.5450651049613953},{"id":"https://openalex.org/C177299597","wikidata":"https://www.wikidata.org/wiki/Q2468214","display_name":"Color filter array","level":5,"score":0.5172765851020813},{"id":"https://openalex.org/C40833965","wikidata":"https://www.wikidata.org/wiki/Q6901438","display_name":"Monochromatic color","level":2,"score":0.49974894523620605},{"id":"https://openalex.org/C198082294","wikidata":"https://www.wikidata.org/wiki/Q3399648","display_name":"Position (finance)","level":2,"score":0.4729297459125519},{"id":"https://openalex.org/C120665830","wikidata":"https://www.wikidata.org/wiki/Q14620","display_name":"Optics","level":1,"score":0.33889007568359375},{"id":"https://openalex.org/C142771000","wikidata":"https://www.wikidata.org/wiki/Q1435398","display_name":"Color gel","level":4,"score":0.23065787553787231},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.15570718050003052},{"id":"https://openalex.org/C77088390","wikidata":"https://www.wikidata.org/wiki/Q8513","display_name":"Database","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},{"id":"https://openalex.org/C87359718","wikidata":"https://www.wikidata.org/wiki/Q1271916","display_name":"Thin-film transistor","level":3,"score":0.0},{"id":"https://openalex.org/C10138342","wikidata":"https://www.wikidata.org/wiki/Q43015","display_name":"Finance","level":1,"score":0.0},{"id":"https://openalex.org/C17525397","wikidata":"https://www.wikidata.org/wiki/Q176140","display_name":"Electrode","level":2,"score":0.0},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1117/1.3602213","is_oa":false,"landing_page_url":"https://doi.org/10.1117/1.3602213","pdf_url":null,"source":{"id":"https://openalex.org/S158511090","display_name":"Journal of Electronic Imaging","issn_l":"1017-9909","issn":["1017-9909","1560-229X"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310315543","host_organization_name":"SPIE","host_organization_lineage":["https://openalex.org/P4310315543"],"host_organization_lineage_names":["SPIE"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Journal of Electronic Imaging","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":22,"referenced_works":["https://openalex.org/W1574971735","https://openalex.org/W1963943638","https://openalex.org/W2015959088","https://openalex.org/W2049130316","https://openalex.org/W2052518016","https://openalex.org/W2071771405","https://openalex.org/W2082087395","https://openalex.org/W2105456967","https://openalex.org/W2111727905","https://openalex.org/W2111943723","https://openalex.org/W2116666377","https://openalex.org/W2123639680","https://openalex.org/W2128357735","https://openalex.org/W2146696548","https://openalex.org/W2156875677","https://openalex.org/W2164109527","https://openalex.org/W2166774562","https://openalex.org/W2170930628","https://openalex.org/W4247184849","https://openalex.org/W4249736943","https://openalex.org/W4249911582","https://openalex.org/W6634312332"],"related_works":["https://openalex.org/W2059320410","https://openalex.org/W2067469524","https://openalex.org/W2007850256","https://openalex.org/W2509614667","https://openalex.org/W2293735384","https://openalex.org/W2349849942","https://openalex.org/W2075738584","https://openalex.org/W3094590434","https://openalex.org/W2079188893","https://openalex.org/W2367442185"],"abstract_inverted_index":{"We":[0,65],"propose":[1,67],"a":[2,68,120,178,194],"new":[3,69],"autofocus":[4],"method":[5,174,189],"for":[6,87,141],"digital":[7],"cameras":[8],"based":[9,98],"on":[10,42,99],"the":[11,17,22,36,57,60,63,73,80,88,100,103,114,137,145,148,154,157,166,188,191],"separation":[12],"of":[13,24,59,75,90,105,123,127,161,197],"color":[14,29,40,77,92],"components":[15,78],"from":[16,62,132,165],"incoming":[18],"light":[19],"rays":[20],"and":[21,38,136,156,159,169,182,199],"measure":[23,70,96,138,150],"their":[25],"disparity.":[26],"For":[27],"separating":[28],"components,":[30],"we":[31],"place":[32],"two":[33,49,128],"apertures":[34],"with":[35,107,116,147],"red":[37],"blue":[39],"filters":[41],"them.":[43],"This":[44],"enables":[45],"us":[46],"to":[47,56,71,134],"get":[48],"monochromatic":[50],"images":[51,106,129],"that":[52,102,187],"have":[53],"disparities":[54],"proportional":[55],"distances":[58],"objects":[61],"camera.":[64],"also":[66],"find":[72],"disparity":[74,82,108,118,168],"these":[76],"because":[79],"conventional":[81],"measures":[83],"show":[84],"low":[85],"accuracy":[86],"pair":[89],"different":[91],"channel":[93],"images.":[94],"The":[95,172],"is":[97,130,139,151,175],"observation":[101],"overlap":[104,115],"has":[109,119,184],"many":[110],"weak":[111],"gradients,":[112],"whereas":[113],"no":[117],"small":[121],"number":[122],"strong":[124],"gradients.":[125],"One":[126],"shifted":[131],"left":[133],"right,":[135],"computed":[140,164],"each":[142],"position.":[143],"Then,":[144],"position":[146],"maximum":[149],"considered":[152],"as":[153],"disparity,":[155],"direction":[158],"distance":[160,198],"focus":[162,192],"are":[163],"estimated":[167],"camera":[170],"parameters.":[171],"proposed":[173],"implemented":[176],"in":[177,193],"commercial":[179],"compact":[180],"camera,":[181],"it":[183],"been":[185],"demonstrated":[186],"finds":[190],"wide":[195],"range":[196],"illumination":[200],"conditions.":[201]},"counts_by_year":[{"year":2020,"cited_by_count":1},{"year":2019,"cited_by_count":1},{"year":2013,"cited_by_count":2},{"year":2012,"cited_by_count":1}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}