{"id":"https://openalex.org/W1585305182","doi":"https://doi.org/10.1109/lgrs.2015.2425931","title":"Enhanced Gap Fraction Extraction From Hemispherical Photography","display_name":"Enhanced Gap Fraction Extraction From Hemispherical Photography","publication_year":2015,"publication_date":"2015-05-07","ids":{"openalex":"https://openalex.org/W1585305182","doi":"https://doi.org/10.1109/lgrs.2015.2425931","mag":"1585305182"},"language":"en","primary_location":{"id":"doi:10.1109/lgrs.2015.2425931","is_oa":false,"landing_page_url":"https://doi.org/10.1109/lgrs.2015.2425931","pdf_url":null,"source":{"id":"https://openalex.org/S126920919","display_name":"IEEE Geoscience and Remote Sensing Letters","issn_l":"1545-598X","issn":["1545-598X","1558-0571"],"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 Geoscience and Remote Sensing Letters","raw_type":"journal-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"http://hdl.handle.net/11336/21201","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5071016376","display_name":"Gast\u00f3n Mauro D\u00edaz","orcid":"https://orcid.org/0000-0002-0362-8616"},"institutions":[{"id":"https://openalex.org/I151201029","display_name":"Consejo Nacional de Investigaciones Cient\u00edficas y T\u00e9cnicas","ror":"https://ror.org/03cqe8w59","country_code":"AR","type":"funder","lineage":["https://openalex.org/I151201029","https://openalex.org/I4210123736","https://openalex.org/I4387155568"]},{"id":"https://openalex.org/I4210102408","display_name":"Centro de Investigaci\u00f3n y Extensi\u00f3n Forestal Andino Patag\u00f3nico","ror":"https://ror.org/01d67x059","country_code":"AR","type":"facility","lineage":["https://openalex.org/I151201029","https://openalex.org/I4210102408","https://openalex.org/I4210123736","https://openalex.org/I4387155568"]},{"id":"https://openalex.org/I4210095825","display_name":"Centro Cient\u00edfico Tecnol\u00f3gico - San Juan","ror":"https://ror.org/00kwm3d29","country_code":"AR","type":"facility","lineage":["https://openalex.org/I151201029","https://openalex.org/I4210095825","https://openalex.org/I4210123736","https://openalex.org/I4387155568"]}],"countries":["AR"],"is_corresponding":true,"raw_author_name":"Gaston M. Diaz","raw_affiliation_strings":["Consejo Nacional de Investigaciones Cient\u00edficas y T\u00e9cnicas, Centro de Investigaci\u00f3n y Extensi\u00f3n Forestal Andino Patag\u00f3nico, Esquel, Argentina","Consejo Nac. de Investig. Cientificas y Tec., Buenos Aires, Argentina"],"affiliations":[{"raw_affiliation_string":"Consejo Nacional de Investigaciones Cient\u00edficas y T\u00e9cnicas, Centro de Investigaci\u00f3n y Extensi\u00f3n Forestal Andino Patag\u00f3nico, Esquel, Argentina","institution_ids":["https://openalex.org/I4210102408","https://openalex.org/I151201029"]},{"raw_affiliation_string":"Consejo Nac. de Investig. Cientificas y Tec., Buenos Aires, Argentina","institution_ids":["https://openalex.org/I4210095825"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5049963396","display_name":"Jos\u00e9 Daniel Lencinas","orcid":null},"institutions":[{"id":"https://openalex.org/I3129709771","display_name":"National University of Patagonia San Juan Bosco","ror":"https://ror.org/022g6pv04","country_code":"AR","type":"education","lineage":["https://openalex.org/I3129709771"]},{"id":"https://openalex.org/I4210095825","display_name":"Centro Cient\u00edfico Tecnol\u00f3gico - San Juan","ror":"https://ror.org/00kwm3d29","country_code":"AR","type":"facility","lineage":["https://openalex.org/I151201029","https://openalex.org/I4210095825","https://openalex.org/I4210123736","https://openalex.org/I4387155568"]}],"countries":["AR"],"is_corresponding":false,"raw_author_name":"Jose D. Lencinas","raw_affiliation_strings":["Consejo Nacional de Investigaciones Cient\u00edficas y T\u00e9cnicas, Universidad Nacional de la Patagonia San Juan Bosco, Esquel, Argentina","Consejo Nac. de Investig. Cientificas y Tec., Buenos Aires, Argentina"],"affiliations":[{"raw_affiliation_string":"Consejo Nacional de Investigaciones Cient\u00edficas y T\u00e9cnicas, Universidad Nacional de la Patagonia San Juan Bosco, Esquel, Argentina","institution_ids":["https://openalex.org/I3129709771"]},{"raw_affiliation_string":"Consejo Nac. de Investig. Cientificas y Tec., Buenos Aires, Argentina","institution_ids":["https://openalex.org/I4210095825"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":["https://openalex.org/A5071016376"],"corresponding_institution_ids":["https://openalex.org/I151201029","https://openalex.org/I4210095825","https://openalex.org/I4210102408"],"apc_list":null,"apc_paid":null,"fwci":0.9369,"has_fulltext":false,"cited_by_count":13,"citation_normalized_percentile":{"value":0.77349771,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":90,"max":97},"biblio":{"volume":"12","issue":"8","first_page":"1785","last_page":"1789"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10111","display_name":"Remote Sensing in Agriculture","score":0.9987000226974487,"subfield":{"id":"https://openalex.org/subfields/2303","display_name":"Ecology"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10111","display_name":"Remote Sensing in Agriculture","score":0.9987000226974487,"subfield":{"id":"https://openalex.org/subfields/2303","display_name":"Ecology"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T13890","display_name":"Remote Sensing and Land Use","score":0.9954000115394592,"subfield":{"id":"https://openalex.org/subfields/1902","display_name":"Atmospheric Science"},"field":{"id":"https://openalex.org/fields/19","display_name":"Earth and Planetary Sciences"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11659","display_name":"Advanced Image Fusion Techniques","score":0.9904999732971191,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/vignetting","display_name":"Vignetting","score":0.6411522626876831},{"id":"https://openalex.org/keywords/brightness","display_name":"Brightness","score":0.6324595212936401},{"id":"https://openalex.org/keywords/photography","display_name":"Photography","score":0.6056122779846191},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.5046595335006714},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.48118144273757935},{"id":"https://openalex.org/keywords/chromatic-scale","display_name":"Chromatic scale","score":0.4466427266597748},{"id":"https://openalex.org/keywords/extraction","display_name":"Extraction (chemistry)","score":0.4247223436832428},{"id":"https://openalex.org/keywords/computer-vision","display_name":"Computer vision","score":0.41757136583328247},{"id":"https://openalex.org/keywords/optics","display_name":"Optics","score":0.40856754779815674},{"id":"https://openalex.org/keywords/remote-sensing","display_name":"Remote sensing","score":0.32809537649154663},{"id":"https://openalex.org/keywords/lens","display_name":"Lens (geology)","score":0.26725929975509644},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.16539818048477173},{"id":"https://openalex.org/keywords/geography","display_name":"Geography","score":0.11160117387771606}],"concepts":[{"id":"https://openalex.org/C14740026","wikidata":"https://www.wikidata.org/wiki/Q1136665","display_name":"Vignetting","level":3,"score":0.6411522626876831},{"id":"https://openalex.org/C125245961","wikidata":"https://www.wikidata.org/wiki/Q221656","display_name":"Brightness","level":2,"score":0.6324595212936401},{"id":"https://openalex.org/C119657128","wikidata":"https://www.wikidata.org/wiki/Q11633","display_name":"Photography","level":2,"score":0.6056122779846191},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.5046595335006714},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.48118144273757935},{"id":"https://openalex.org/C196956537","wikidata":"https://www.wikidata.org/wiki/Q202021","display_name":"Chromatic scale","level":2,"score":0.4466427266597748},{"id":"https://openalex.org/C4725764","wikidata":"https://www.wikidata.org/wiki/Q844704","display_name":"Extraction (chemistry)","level":2,"score":0.4247223436832428},{"id":"https://openalex.org/C31972630","wikidata":"https://www.wikidata.org/wiki/Q844240","display_name":"Computer vision","level":1,"score":0.41757136583328247},{"id":"https://openalex.org/C120665830","wikidata":"https://www.wikidata.org/wiki/Q14620","display_name":"Optics","level":1,"score":0.40856754779815674},{"id":"https://openalex.org/C62649853","wikidata":"https://www.wikidata.org/wiki/Q199687","display_name":"Remote sensing","level":1,"score":0.32809537649154663},{"id":"https://openalex.org/C15336307","wikidata":"https://www.wikidata.org/wiki/Q1766051","display_name":"Lens (geology)","level":2,"score":0.26725929975509644},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.16539818048477173},{"id":"https://openalex.org/C205649164","wikidata":"https://www.wikidata.org/wiki/Q1071","display_name":"Geography","level":0,"score":0.11160117387771606},{"id":"https://openalex.org/C43617362","wikidata":"https://www.wikidata.org/wiki/Q170050","display_name":"Chromatography","level":1,"score":0.0},{"id":"https://openalex.org/C142362112","wikidata":"https://www.wikidata.org/wiki/Q735","display_name":"Art","level":0,"score":0.0},{"id":"https://openalex.org/C185592680","wikidata":"https://www.wikidata.org/wiki/Q2329","display_name":"Chemistry","level":0,"score":0.0},{"id":"https://openalex.org/C153349607","wikidata":"https://www.wikidata.org/wiki/Q36649","display_name":"Visual arts","level":1,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1109/lgrs.2015.2425931","is_oa":false,"landing_page_url":"https://doi.org/10.1109/lgrs.2015.2425931","pdf_url":null,"source":{"id":"https://openalex.org/S126920919","display_name":"IEEE Geoscience and Remote Sensing Letters","issn_l":"1545-598X","issn":["1545-598X","1558-0571"],"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 Geoscience and Remote Sensing Letters","raw_type":"journal-article"},{"id":"pmh:oai:ri.conicet.gov.ar:11336/21201","is_oa":true,"landing_page_url":"http://hdl.handle.net/11336/21201","pdf_url":null,"source":{"id":"https://openalex.org/S4306402455","display_name":"CONICET Digital (CONICET)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I4210148385","host_organization_name":"Biomedicine Research Institute of Buenos Aires - CONICET - Partner Institute of the Max Planck Society","host_organization_lineage":["https://openalex.org/I4210148385"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by-nc-sa","license_id":"https://openalex.org/licenses/cc-by-nc-sa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"info:eu-repo/semantics/article"}],"best_oa_location":{"id":"pmh:oai:ri.conicet.gov.ar:11336/21201","is_oa":true,"landing_page_url":"http://hdl.handle.net/11336/21201","pdf_url":null,"source":{"id":"https://openalex.org/S4306402455","display_name":"CONICET Digital (CONICET)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I4210148385","host_organization_name":"Biomedicine Research Institute of Buenos Aires - CONICET - Partner Institute of the Max Planck Society","host_organization_lineage":["https://openalex.org/I4210148385"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by-nc-sa","license_id":"https://openalex.org/licenses/cc-by-nc-sa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"info:eu-repo/semantics/article"},"sustainable_development_goals":[],"awards":[],"funders":[{"id":"https://openalex.org/F4320321594","display_name":"Consejo Nacional de Investigaciones Cient\u00edficas y T\u00e9cnicas","ror":"https://ror.org/03cqe8w59"},{"id":"https://openalex.org/F4320337954","display_name":"Fondo para la Investigaci\u00f3n Cient\u00edfica y Tecnol\u00f3gica","ror":"https://ror.org/03stxzb56"}],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":30,"referenced_works":["https://openalex.org/W29643851","https://openalex.org/W1513618424","https://openalex.org/W1547714734","https://openalex.org/W1793023304","https://openalex.org/W1839938186","https://openalex.org/W1969939898","https://openalex.org/W1985789994","https://openalex.org/W1986644194","https://openalex.org/W1994582631","https://openalex.org/W1995103915","https://openalex.org/W2020523254","https://openalex.org/W2035865758","https://openalex.org/W2038406442","https://openalex.org/W2052422239","https://openalex.org/W2063078821","https://openalex.org/W2067463158","https://openalex.org/W2083031250","https://openalex.org/W2095958845","https://openalex.org/W2127723859","https://openalex.org/W2128049316","https://openalex.org/W2129985183","https://openalex.org/W2148815319","https://openalex.org/W2164434526","https://openalex.org/W2164765928","https://openalex.org/W2165094119","https://openalex.org/W2465493330","https://openalex.org/W4285719527","https://openalex.org/W6632729973","https://openalex.org/W6638219815","https://openalex.org/W6649160939"],"related_works":["https://openalex.org/W2085396506","https://openalex.org/W2757822657","https://openalex.org/W1686365911","https://openalex.org/W1672565304","https://openalex.org/W2000169377","https://openalex.org/W2351567070","https://openalex.org/W1998561111","https://openalex.org/W2104848710","https://openalex.org/W2081359467","https://openalex.org/W2069745680"],"abstract_inverted_index":{"Canopy":[0],"structure":[1],"can":[2,11,83],"be":[3,12,84],"estimated":[4],"using":[5],"gap":[6],"fraction":[7],"(GF)":[8],"data,":[9],"which":[10,57],"directly":[13],"measured":[14],"with":[15],"hemispherical":[16,41],"photography.":[17],"However,":[18],"GF":[19,53,88],"data":[20],"accuracy":[21],"is":[22,45],"affected":[23],"by":[24],"sunlit":[25],"canopy,":[26],"multiple":[27],"scattering,":[28],"vignetting,":[29],"blooming,":[30],"and":[31,68,77],"chromatic":[32],"aberration.":[33],"Here,":[34],"we":[35],"present":[36],"an":[37],"algorithm":[38],"to":[39,46,86],"classify":[40],"photography,":[42],"whose":[43],"aim":[44],"reduce":[47],"errors":[48],"in":[49,60],"the":[50],"extraction":[51],"of":[52],"data.":[54,89],"The":[55,72],"algorithm,":[56],"was":[58],"implemented":[59],"free":[61],"software,":[62],"uses":[63],"color":[64,76],"transformations,":[65],"fuzzy":[66],"logic,":[67],"object-based":[69],"image":[70],"analysis.":[71],"results":[73],"suggest":[74],"that":[75],"texture,":[78],"rather":[79],"than":[80],"only":[81],"brightness,":[82],"used":[85],"extract":[87]},"counts_by_year":[{"year":2023,"cited_by_count":2},{"year":2021,"cited_by_count":3},{"year":2020,"cited_by_count":4},{"year":2019,"cited_by_count":1},{"year":2018,"cited_by_count":2},{"year":2017,"cited_by_count":1}],"updated_date":"2026-04-04T16:13:02.066488","created_date":"2025-10-10T00:00:00"}