{"id":"https://openalex.org/W2769965774","doi":"https://doi.org/10.3390/ijgi6110371","title":"Deriving Ephemeral Gullies from VHR Image in Loess Hilly Areas through Directional Edge Detection","display_name":"Deriving Ephemeral Gullies from VHR Image in Loess Hilly Areas through Directional Edge Detection","publication_year":2017,"publication_date":"2017-11-18","ids":{"openalex":"https://openalex.org/W2769965774","doi":"https://doi.org/10.3390/ijgi6110371","mag":"2769965774"},"language":"en","primary_location":{"id":"doi:10.3390/ijgi6110371","is_oa":true,"landing_page_url":"https://doi.org/10.3390/ijgi6110371","pdf_url":"https://www.mdpi.com/2220-9964/6/11/371/pdf?version=1511005673","source":{"id":"https://openalex.org/S2764431341","display_name":"ISPRS International Journal of Geo-Information","issn_l":"2220-9964","issn":["2220-9964"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"ISPRS International Journal of Geo-Information","raw_type":"journal-article"},"type":"article","indexed_in":["crossref","doaj"],"open_access":{"is_oa":true,"oa_status":"gold","oa_url":"https://www.mdpi.com/2220-9964/6/11/371/pdf?version=1511005673","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5079228292","display_name":"Xin Yang","orcid":"https://orcid.org/0000-0002-4760-5408"},"institutions":[{"id":"https://openalex.org/I152031979","display_name":"Nanjing Normal University","ror":"https://ror.org/036trcv74","country_code":"CN","type":"education","lineage":["https://openalex.org/I152031979"]}],"countries":["CN"],"is_corresponding":true,"raw_author_name":"Xin Yang","raw_affiliation_strings":["Key Laboratory of Virtual Geographic Environment, Ministry of Education, Nanjing Normal University, Nanjing 210023, China"],"affiliations":[{"raw_affiliation_string":"Key Laboratory of Virtual Geographic Environment, Ministry of Education, Nanjing Normal University, Nanjing 210023, China","institution_ids":["https://openalex.org/I152031979"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5068947880","display_name":"Wen Dai","orcid":"https://orcid.org/0000-0001-7424-644X"},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Wen Dai","raw_affiliation_strings":["State Key Laboratory Cultivation Base of Geographical Environment Evolution, Nanjing 210023, China"],"affiliations":[{"raw_affiliation_string":"State Key Laboratory Cultivation Base of Geographical Environment Evolution, Nanjing 210023, China","institution_ids":[]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5053457530","display_name":"Guoan Tang","orcid":"https://orcid.org/0000-0002-1443-6134"},"institutions":[{"id":"https://openalex.org/I4210141657","display_name":"Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application","ror":"https://ror.org/045yewh40","country_code":"CN","type":"facility","lineage":["https://openalex.org/I152031979","https://openalex.org/I4210141657"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Guoan Tang","raw_affiliation_strings":["Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing 210023, China"],"affiliations":[{"raw_affiliation_string":"Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing 210023, China","institution_ids":["https://openalex.org/I4210141657"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5101590950","display_name":"Min Li","orcid":"https://orcid.org/0000-0001-9329-1086"},"institutions":[{"id":"https://openalex.org/I4210141657","display_name":"Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application","ror":"https://ror.org/045yewh40","country_code":"CN","type":"facility","lineage":["https://openalex.org/I152031979","https://openalex.org/I4210141657"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Min Li","raw_affiliation_strings":["Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing 210023, China"],"affiliations":[{"raw_affiliation_string":"Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing 210023, China","institution_ids":["https://openalex.org/I4210141657"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":4,"corresponding_author_ids":["https://openalex.org/A5079228292"],"corresponding_institution_ids":["https://openalex.org/I152031979"],"apc_list":{"value":1400,"currency":"CHF","value_usd":1515},"apc_paid":{"value":1400,"currency":"CHF","value_usd":1515},"fwci":1.608,"has_fulltext":true,"cited_by_count":18,"citation_normalized_percentile":{"value":0.85313524,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":99},"biblio":{"volume":"6","issue":"11","first_page":"371","last_page":"371"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10889","display_name":"Soil erosion and sediment transport","score":0.9998000264167786,"subfield":{"id":"https://openalex.org/subfields/1111","display_name":"Soil Science"},"field":{"id":"https://openalex.org/fields/11","display_name":"Agricultural and Biological Sciences"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},"topics":[{"id":"https://openalex.org/T10889","display_name":"Soil erosion and sediment transport","score":0.9998000264167786,"subfield":{"id":"https://openalex.org/subfields/1111","display_name":"Soil Science"},"field":{"id":"https://openalex.org/fields/11","display_name":"Agricultural and Biological Sciences"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},{"id":"https://openalex.org/T12543","display_name":"Groundwater and Watershed Analysis","score":0.9937999844551086,"subfield":{"id":"https://openalex.org/subfields/2305","display_name":"Environmental Engineering"},"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/T10930","display_name":"Flood Risk Assessment and Management","score":0.9908000230789185,"subfield":{"id":"https://openalex.org/subfields/2306","display_name":"Global and Planetary Change"},"field":{"id":"https://openalex.org/fields/23","display_name":"Environmental Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/ephemeral-key","display_name":"Ephemeral key","score":0.9774343967437744},{"id":"https://openalex.org/keywords/loess","display_name":"Loess","score":0.6126188635826111},{"id":"https://openalex.org/keywords/remote-sensing","display_name":"Remote sensing","score":0.4725705683231354},{"id":"https://openalex.org/keywords/aerial-photos","display_name":"Aerial photos","score":0.4438636004924774},{"id":"https://openalex.org/keywords/noise","display_name":"Noise (video)","score":0.4333249628543854},{"id":"https://openalex.org/keywords/geology","display_name":"Geology","score":0.42031097412109375},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.2852088212966919},{"id":"https://openalex.org/keywords/computer-vision","display_name":"Computer vision","score":0.2553688883781433},{"id":"https://openalex.org/keywords/image","display_name":"Image (mathematics)","score":0.2041943073272705},{"id":"https://openalex.org/keywords/geomorphology","display_name":"Geomorphology","score":0.09743046760559082}],"concepts":[{"id":"https://openalex.org/C76947770","wikidata":"https://www.wikidata.org/wiki/Q4533181","display_name":"Ephemeral key","level":2,"score":0.9774343967437744},{"id":"https://openalex.org/C185515318","wikidata":"https://www.wikidata.org/wiki/Q22723","display_name":"Loess","level":2,"score":0.6126188635826111},{"id":"https://openalex.org/C62649853","wikidata":"https://www.wikidata.org/wiki/Q199687","display_name":"Remote sensing","level":1,"score":0.4725705683231354},{"id":"https://openalex.org/C3018193623","wikidata":"https://www.wikidata.org/wiki/Q191839","display_name":"Aerial photos","level":2,"score":0.4438636004924774},{"id":"https://openalex.org/C99498987","wikidata":"https://www.wikidata.org/wiki/Q2210247","display_name":"Noise (video)","level":3,"score":0.4333249628543854},{"id":"https://openalex.org/C127313418","wikidata":"https://www.wikidata.org/wiki/Q1069","display_name":"Geology","level":0,"score":0.42031097412109375},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.2852088212966919},{"id":"https://openalex.org/C31972630","wikidata":"https://www.wikidata.org/wiki/Q844240","display_name":"Computer vision","level":1,"score":0.2553688883781433},{"id":"https://openalex.org/C115961682","wikidata":"https://www.wikidata.org/wiki/Q860623","display_name":"Image (mathematics)","level":2,"score":0.2041943073272705},{"id":"https://openalex.org/C114793014","wikidata":"https://www.wikidata.org/wiki/Q52109","display_name":"Geomorphology","level":1,"score":0.09743046760559082},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.0}],"mesh":[],"locations_count":3,"locations":[{"id":"doi:10.3390/ijgi6110371","is_oa":true,"landing_page_url":"https://doi.org/10.3390/ijgi6110371","pdf_url":"https://www.mdpi.com/2220-9964/6/11/371/pdf?version=1511005673","source":{"id":"https://openalex.org/S2764431341","display_name":"ISPRS International Journal of Geo-Information","issn_l":"2220-9964","issn":["2220-9964"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"ISPRS International Journal of Geo-Information","raw_type":"journal-article"},{"id":"pmh:oai:doaj.org/article:de6ea00ebcba4057bc29c6be63083e66","is_oa":true,"landing_page_url":"https://doaj.org/article/de6ea00ebcba4057bc29c6be63083e66","pdf_url":null,"source":{"id":"https://openalex.org/S112646816","display_name":"SHILAP Revista de lepidopterolog\u00eda","issn_l":"0300-5267","issn":["0300-5267","2340-4078"],"is_oa":true,"is_in_doaj":true,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"journal"},"license":"cc-by-sa","license_id":"https://openalex.org/licenses/cc-by-sa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"ISPRS International Journal of Geo-Information, Vol 6, Iss 11, p 371 (2017)","raw_type":"article"},{"id":"pmh:oai:mdpi.com:/2220-9964/6/11/371/","is_oa":true,"landing_page_url":"https://dx.doi.org/10.3390/ijgi6110371","pdf_url":null,"source":{"id":"https://openalex.org/S4306400947","display_name":"MDPI (MDPI AG)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I4210097602","host_organization_name":"Multidisciplinary Digital Publishing Institute (Switzerland)","host_organization_lineage":["https://openalex.org/I4210097602"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"ISPRS International Journal of Geo-Information; Volume 6; Issue 11; Pages: 371","raw_type":"Text"}],"best_oa_location":{"id":"doi:10.3390/ijgi6110371","is_oa":true,"landing_page_url":"https://doi.org/10.3390/ijgi6110371","pdf_url":"https://www.mdpi.com/2220-9964/6/11/371/pdf?version=1511005673","source":{"id":"https://openalex.org/S2764431341","display_name":"ISPRS International Journal of Geo-Information","issn_l":"2220-9964","issn":["2220-9964"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"ISPRS International Journal of Geo-Information","raw_type":"journal-article"},"sustainable_development_goals":[{"score":0.6600000262260437,"display_name":"Life in Land","id":"https://metadata.un.org/sdg/15"}],"awards":[{"id":"https://openalex.org/G1007721318","display_name":null,"funder_award_id":"China","funder_id":"https://openalex.org/F4320327518","funder_display_name":"Priority Academic Program Development of Jiangsu Higher Education Institutions"},{"id":"https://openalex.org/G1121271761","display_name":null,"funder_award_id":"Program","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G1608299743","display_name":null,"funder_award_id":"4177141","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G2087396116","display_name":null,"funder_award_id":"China","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G3317480652","display_name":null,"funder_award_id":"Science","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G3671311037","display_name":null,"funder_award_id":"164320H116","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G391238517","display_name":null,"funder_award_id":", and","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G4120751780","display_name":null,"funder_award_id":"41771415","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G4954710421","display_name":null,"funder_award_id":"41471316","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G5994120800","display_name":null,"funder_award_id":"Natural","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G6073784598","display_name":null,"funder_award_id":"20H116","funder_id":"https://openalex.org/F4320327518","funder_display_name":"Priority Academic Program Development of Jiangsu Higher Education Institutions"},{"id":"https://openalex.org/G6253648677","display_name":null,"funder_award_id":"164320H116","funder_id":"https://openalex.org/F4320321605","funder_display_name":"Government of Jiangsu Province"},{"id":"https://openalex.org/G6311851735","display_name":null,"funder_award_id":"164320H116)","funder_id":"https://openalex.org/F4320327518","funder_display_name":"Priority Academic Program Development of Jiangsu Higher Education Institutions"},{"id":"https://openalex.org/G8790479369","display_name":null,"funder_award_id":"164320H116","funder_id":"https://openalex.org/F4320327518","funder_display_name":"Priority Academic Program Development of Jiangsu Higher Education Institutions"}],"funders":[{"id":"https://openalex.org/F4320321001","display_name":"National Natural Science Foundation of China","ror":"https://ror.org/01h0zpd94"},{"id":"https://openalex.org/F4320321605","display_name":"Government of Jiangsu Province","ror":"https://ror.org/004svx814"},{"id":"https://openalex.org/F4320327518","display_name":"Priority Academic Program Development of Jiangsu Higher Education Institutions","ror":null}],"has_content":{"pdf":true,"grobid_xml":true},"content_urls":{"pdf":"https://content.openalex.org/works/W2769965774.pdf","grobid_xml":"https://content.openalex.org/works/W2769965774.grobid-xml"},"referenced_works_count":65,"referenced_works":["https://openalex.org/W1488650253","https://openalex.org/W1507395079","https://openalex.org/W1511858711","https://openalex.org/W1626935917","https://openalex.org/W1833180932","https://openalex.org/W1876440458","https://openalex.org/W1884570078","https://openalex.org/W1966286658","https://openalex.org/W1967904028","https://openalex.org/W1969756181","https://openalex.org/W1970207778","https://openalex.org/W1972544340","https://openalex.org/W1974115640","https://openalex.org/W1978110877","https://openalex.org/W1981469180","https://openalex.org/W1982068729","https://openalex.org/W1982372327","https://openalex.org/W1987185252","https://openalex.org/W1988039264","https://openalex.org/W1991099778","https://openalex.org/W2002839548","https://openalex.org/W2005875020","https://openalex.org/W2006307997","https://openalex.org/W2009237300","https://openalex.org/W2009296710","https://openalex.org/W2012184028","https://openalex.org/W2021302788","https://openalex.org/W2029377763","https://openalex.org/W2048787593","https://openalex.org/W2048873686","https://openalex.org/W2053669534","https://openalex.org/W2054068298","https://openalex.org/W2088205038","https://openalex.org/W2089533448","https://openalex.org/W2092282499","https://openalex.org/W2102048636","https://openalex.org/W2102083336","https://openalex.org/W2125948727","https://openalex.org/W2149064628","https://openalex.org/W2152703016","https://openalex.org/W2155806169","https://openalex.org/W2196046484","https://openalex.org/W2295550603","https://openalex.org/W2334297625","https://openalex.org/W2344264167","https://openalex.org/W2352125790","https://openalex.org/W2354626428","https://openalex.org/W2367691837","https://openalex.org/W2371224213","https://openalex.org/W2379590266","https://openalex.org/W2384194617","https://openalex.org/W2386102280","https://openalex.org/W2386191636","https://openalex.org/W2395811491","https://openalex.org/W2466601562","https://openalex.org/W2518978656","https://openalex.org/W2561080224","https://openalex.org/W2571906306","https://openalex.org/W2620082686","https://openalex.org/W2720510343","https://openalex.org/W3147666862","https://openalex.org/W6642209926","https://openalex.org/W6682602794","https://openalex.org/W6709721055","https://openalex.org/W6711850960"],"related_works":["https://openalex.org/W4254841053","https://openalex.org/W2997601332","https://openalex.org/W4253528273","https://openalex.org/W2032050747","https://openalex.org/W2507616274","https://openalex.org/W4210746918","https://openalex.org/W2581328603","https://openalex.org/W1560287221","https://openalex.org/W2069967299","https://openalex.org/W4212875411"],"abstract_inverted_index":{"Monitoring":[0],"ephemeral":[1,23,42,59,69,110,119,123,241],"gullies":[2,24,43,60,70,111,124],"facilitates":[3],"water":[4],"planning":[5],"and":[6,115,157,188,207,243],"soil":[7],"conservation.":[8],"Artificial":[9],"interpretation":[10],"based":[11,48],"on":[12,49],"high":[13],"spatial":[14],"resolution":[15],"images":[16,72,170],"is":[17,31,53],"the":[18,56,65,83,101,107,122,133,167,173,181,198,215,225,237,249,253,257],"main":[19],"method":[20,30,39],"for":[21,40],"monitoring":[22],"in":[25,44,71,100,138,193,204,252],"large":[26,87,212],"areas;":[27],"however,":[28],"this":[29,35,244],"time":[32],"consuming.":[33],"In":[34],"study,":[36],"a":[37,90,211,233],"semiautomatic":[38],"extracting":[41],"loess":[45,140],"hilly":[46,141,254],"areas":[47,142],"directional":[50,194],"edge":[51,92],"detection":[52],"proposed.":[54],"First,":[55],"area":[57,255],"where":[58,109],"developed":[61,112],"was":[62,94,177,183],"extracted":[63],"because":[64],"weak":[66],"trace":[67],"of":[68,129,166,227,240,256,261],"can":[73,221,246],"hardly":[74],"be":[75,222],"detected":[76],"by":[77,131],"most":[78],"image":[79,182],"detectors,":[80],"which":[81],"avoided":[82],"noise":[84,206],"from":[85,147,153,160],"other":[86],"gullies.":[88,120,217],"Second,":[89],"Canny":[91],"detector":[93],"employed":[95],"to":[96,149,155,162],"extract":[97],"all":[98],"edges":[99,105],"image.":[102],"Then,":[103],"those":[104],"along":[106],"direction":[108],"were":[113,125],"searched":[114],"coded":[116],"as":[117],"candidate":[118],"Finally,":[121],"identified":[126],"through":[127,224],"filtering":[128],"pseudo-gullies":[130],"setting":[132],"appropriate":[134],"length":[135,191,239],"threshold.":[136],"Experiments":[137],"three":[139],"showed":[143],"that":[144],"accuracy":[145,176],"ranged":[146,152,159],"38.18%":[148],"85.05%,":[150],"completeness":[151],"82.35%":[154],"92.86%,":[156],"quality":[158,165],"35.29%":[161],"79.82%.":[163],"The":[164,175,190,229],"remote":[168],"sensing":[169],"highly":[171],"affected":[172,197],"results.":[174],"significantly":[178],"improved":[179],"when":[180],"used":[184],"with":[185,236],"less":[186],"grass":[187],"shrubs.":[189],"threshold":[192,202,213,220,230,251],"searching":[195],"also":[196,231],"accuracy.":[199],"A":[200,218],"small":[201],"resulted":[203],"additional":[205],"disconnected":[208],"gullies,":[209,242],"whereas":[210],"disregarded":[214],"short":[216],"reasonable":[219],"obtained":[223],"index":[226],"quality.":[228],"exhibits":[232],"strong":[234],"relationship":[235,245],"average":[238],"help":[247],"obtain":[248],"optimum":[250],"Northern":[258],"Loess":[259],"Plateau":[260],"China.":[262]},"counts_by_year":[{"year":2026,"cited_by_count":1},{"year":2025,"cited_by_count":2},{"year":2024,"cited_by_count":4},{"year":2023,"cited_by_count":1},{"year":2022,"cited_by_count":1},{"year":2021,"cited_by_count":3},{"year":2020,"cited_by_count":2},{"year":2019,"cited_by_count":4}],"updated_date":"2026-03-27T05:58:40.876381","created_date":"2017-12-04T00:00:00"}
