{"id":"https://openalex.org/W1622429976","doi":null,"title":"Assessing multi-temporal remote sensing imagery for discriminating savannah tree species.","display_name":"Assessing multi-temporal remote sensing imagery for discriminating savannah tree species.","publication_year":2015,"publication_date":"2015-07-13","ids":{"openalex":"https://openalex.org/W1622429976","mag":"1622429976"},"language":"en","primary_location":{"id":"pmh:oai:researchspace.ukzn.ac.za:10413/12245","doi":null,"is_oa":true,"landing_page_url":"http://hdl.handle.net/10413/12245","pdf_url":"http://hdl.handle.net/10413/12245","source":{"id":"https://openalex.org/S4306402416","display_name":"ResearchSpace (University of KwaZulu-Natal)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I95023434","host_organization_name":"University of KwaZulu-Natal","host_organization_lineage":["https://openalex.org/I95023434"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"Thesis"},"volume":null,"type":"dissertation","is_traditional":true,"indexed_in":[],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"http://hdl.handle.net/10413/12245","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5060211036","display_name":"Sabelo Madonsela","orcid":"https://orcid.org/0000-0002-1986-5798","observed_orcids":["https://orcid.org/0000-0002-1986-5798"]},"institutions":[],"countries":[],"is_corresponding":true,"raw_author_name":"Sabelo Madonsela","raw_affiliation_strings":[],"raw_orcid":"https://orcid.org/0000-0002-1986-5798","affiliations":[]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":0,"corresponding_author_ids":["https://openalex.org/A5060211036"],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":null,"has_fulltext":true,"cited_by_count":0,"citation_normalized_percentile":null,"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":null,"last_page":null},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10689","display_name":"Remote-Sensing Image Classification","score":0.9854000210762024,"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/T10689","display_name":"Remote-Sensing Image Classification","score":0.9854000210762024,"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/T10111","display_name":"Remote Sensing in Agriculture","score":0.010999999940395355,"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":0.0010000000474974513,"subfield":{"id":"https://openalex.org/subfields/3305","display_name":"Geography, Planning and Development"},"field":{"id":"https://openalex.org/fields/33","display_name":"Social Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/worldview-2","display_name":"WorldView-2","score":0.8029999732971191},{"id":"https://openalex.org/keywords/very-high-resolution-imagery","display_name":"very high resolution imagery","score":0.8949999809265137},{"id":"https://openalex.org/keywords/object-based-image-analysis","display_name":"object-based image analysis","score":0.968999981880188},{"id":"https://openalex.org/keywords/multitemporal-imagery","display_name":"multi-temporal imagery","score":0.8199999928474426},{"id":"https://openalex.org/keywords/spectral-separability","display_name":"spectral separability","score":0.7879999876022339},{"id":"https://openalex.org/keywords/acacia-nigrescens","display_name":"Acacia nigrescens","score":0.9980000257492065},{"id":"https://openalex.org/keywords/dichrostachys-cinerea","display_name":"Dichrostachys cinerea","score":0.9959999918937683},{"id":"https://openalex.org/keywords/red-edge-band","display_name":"red-edge bands","score":0.7020000219345093}],"concepts":[{"id":"https://openalex.org/C62649853","wikidata":"https://www.wikidata.org/wiki/Q199687","display_name":"Remote sensing","level":1,"score":0.5933722853660583},{"id":"https://openalex.org/C205649164","wikidata":"https://www.wikidata.org/wiki/Q1071","display_name":"Geography","level":0,"score":0.5602230429649353},{"id":"https://openalex.org/C58640448","wikidata":"https://www.wikidata.org/wiki/Q42515","display_name":"Cartography","level":1,"score":0.4270779490470886},{"id":"https://openalex.org/C97137747","wikidata":"https://www.wikidata.org/wiki/Q38112","display_name":"Forestry","level":1,"score":0.41383615136146545},{"id":"https://openalex.org/C113174947","wikidata":"https://www.wikidata.org/wiki/Q2859736","display_name":"Tree (set theory)","level":2,"score":0.41054463386535645},{"id":"https://openalex.org/C39432304","wikidata":"https://www.wikidata.org/wiki/Q188847","display_name":"Environmental science","level":0,"score":0.3308173418045044},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.139183908700943},{"id":"https://openalex.org/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"pmh:oai:researchspace.ukzn.ac.za:10413/12245","doi":null,"is_oa":true,"landing_page_url":"http://hdl.handle.net/10413/12245","pdf_url":"http://hdl.handle.net/10413/12245","source":{"id":"https://openalex.org/S4306402416","display_name":"ResearchSpace (University of KwaZulu-Natal)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I95023434","host_organization_name":"University of KwaZulu-Natal","host_organization_lineage":["https://openalex.org/I95023434"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"Thesis"},{"id":"mag:1622429976","doi":null,"is_oa":false,"landing_page_url":"https://researchspace.ukzn.ac.za/handle/10413/12245","pdf_url":null,"source":null,"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":null}],"best_oa_location":{"id":"pmh:oai:researchspace.ukzn.ac.za:10413/12245","doi":null,"is_oa":true,"landing_page_url":"http://hdl.handle.net/10413/12245","pdf_url":"http://hdl.handle.net/10413/12245","source":{"id":"https://openalex.org/S4306402416","display_name":"ResearchSpace (University of KwaZulu-Natal)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I95023434","host_organization_name":"University of KwaZulu-Natal","host_organization_lineage":["https://openalex.org/I95023434"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"Thesis"},"sustainable_development_goals":[{"score":0.8518999814987183,"display_name":"Life on land","id":"https://metadata.un.org/sdg/15"}],"study_designs":[],"awards":[],"funders":[],"has_content":{"pdf":true,"grobid_xml":true},"content_urls":{"pdf":"https://content.openalex.org/works/W1622429976.pdf","grobid_xml":"https://content.openalex.org/works/W1622429976.grobid-xml"},"referenced_works_count":57,"referenced_works":["https://openalex.org/W140645639","https://openalex.org/W1496932168","https://openalex.org/W1497931379","https://openalex.org/W1572601046","https://openalex.org/W1967769689","https://openalex.org/W1971637299","https://openalex.org/W1977030628","https://openalex.org/W1979366691","https://openalex.org/W1979489296","https://openalex.org/W1983763063","https://openalex.org/W1984792953","https://openalex.org/W1994668970","https://openalex.org/W1995280601","https://openalex.org/W1998598901","https://openalex.org/W2005156666","https://openalex.org/W2007603980","https://openalex.org/W2017517123","https://openalex.org/W2027249140","https://openalex.org/W2034816582","https://openalex.org/W2035406350","https://openalex.org/W2047528185","https://openalex.org/W2064289726","https://openalex.org/W2066389830","https://openalex.org/W2074485451","https://openalex.org/W2083265151","https://openalex.org/W2089806346","https://openalex.org/W2102689718","https://openalex.org/W2105466737","https://openalex.org/W2105757120","https://openalex.org/W2107919956","https://openalex.org/W2109191549","https://openalex.org/W2114253392","https://openalex.org/W2118217902","https://openalex.org/W2121102297","https://openalex.org/W2126583978","https://openalex.org/W2129826572","https://openalex.org/W2130662843","https://openalex.org/W2138742646","https://openalex.org/W2143277109","https://openalex.org/W2145862305","https://openalex.org/W2146126838","https://openalex.org/W2151554426","https://openalex.org/W2152256343","https://openalex.org/W2152334070","https://openalex.org/W2156808278","https://openalex.org/W2159639712","https://openalex.org/W2161567984","https://openalex.org/W2163244184","https://openalex.org/W2164650555","https://openalex.org/W2168481151","https://openalex.org/W2168798781","https://openalex.org/W2185445703","https://openalex.org/W2187624447","https://openalex.org/W2217187747","https://openalex.org/W2326085947","https://openalex.org/W3145368344","https://openalex.org/W4239304042"],"related_works":["https://openalex.org/W1939122918","https://openalex.org/W2587185589","https://openalex.org/W2072589742","https://openalex.org/W2586182409","https://openalex.org/W4362471216","https://openalex.org/W2523349064","https://openalex.org/W3177678226","https://openalex.org/W2085527057","https://openalex.org/W4387676577","https://openalex.org/W6980095215"],"abstract_inverted_index":{"The":[0,43,199,224,232,283,299],"advent":[1],"of":[2,27,39,59,67,80,100,109,155,182,187,196,234,276,313],"new":[3,17,68],"multispectral":[4],"sensors":[5],"such":[6],"as":[7],"Worldview-2":[8,94],"with":[9,37,184,207,211,218,222],"very":[10],"high":[11],"spatial":[12],"resolution":[13],"(VHR)":[14],"has":[15],"presented":[16],"opportunities":[18,287],"for":[19,30,70,85,102,167,279],"mapping":[20,33,88,104],"vegetation":[21],"at":[22],"species-level.":[23],"However":[24,149],"the":[25,57,65,78,90,97,107,127,172,179,185,193,244,261,286,307,311],"use":[26,233],"VHR":[28],"data":[29,111,236,259],"tree":[31,60,71,86,117,143,281,304],"species":[32,72,87,103,118,144,241,305],"is":[34,306],"often":[35],"confronted":[36],"issues":[38],"within-canopy":[40],"spectral":[41,98,114,180,238,262],"variability.":[42],"prevailing":[44],"intraspecies":[45],"variability":[46,239],"in":[47,89,119,171,295,310],"southern":[48,120],"African":[49,121],"savannah":[50,91,142,173,314],"limits":[51],"our":[52],"ability":[53,108,300],"to":[54,112,289,293,301],"accurately":[55,302],"map":[56,303],"distribution":[58],"species.":[61,282],"These":[62],"challenges":[63],"necessitate":[64],"development":[66],"methods":[69],"mapping.":[73],"This":[74],"study":[75,128],"investigated":[76],"i)":[77],"utility":[79],"object-based":[81,208,219],"image":[82,201,216],"analysis":[83],"(OBIA)":[84],"environment":[92,174],"using":[93,175],"image,":[95],"ii)":[96],"capability":[99],"WV-2":[101,176,183,197,200],"and":[105,138,158,189,209,220,242,251,255,267,270,273],"iii)":[106],"multi-temporal":[110,235],"enhance":[113],"separability":[115],"between":[116,136,240,264],"savannah.":[122],"Using":[123],"Random":[124],"Forest":[125],"(RF),":[126],"could":[129],"not":[130],"establish":[131],"any":[132],"statistically":[133,227],"significant":[134,228],"difference":[135,225],"OBIA":[137,150],"pixel-based":[139],"approach":[140],"towards":[141],"classification":[145,153,204,246],"(zobt":[146,229],"<":[147],"zcrit).":[148,231],"successfully":[151],"improved":[152],"accuracy":[154,205,247,275],"Sclerocharya":[156,265],"birrea":[157,266],"Acacia":[159],"nigrescens":[160],"which":[161],"makes":[162],"it":[163],"an":[164],"appropriate":[165],"alternative":[166],"classifying":[168],"big":[169],"trees":[170],"image.":[177],"\\nMoreover,":[178],"configuration":[181],"inclusion":[186],"yellow":[188],"red-edge":[190],"bands":[191],"enhanced":[192,237],"discriminatory":[194],"power":[195],"sensor.":[198],"achieved":[202,243,271],"higher":[203],"(74.5%":[206],"76.4%":[210],"pixel-based)":[212],"than":[213,249],"simulated":[214],"IKONOS":[215],"(58.6%":[217],"67.9%":[221],"pixel-based).":[223],"was":[226],">":[230],"highest":[245],"(80.4%)":[248],"March":[250],"April":[252],"dates":[253],"(72.9%":[254],"76.4%,":[256],"respectively).":[257],"Multi-temporal":[258],"mitigated":[260],"confusion":[263],"Dichrostachys":[268],"cinerea":[269],"producer\u2019s":[272],"user\u2019s":[274],"above":[277],"60%":[278],"these":[280],"results":[284],"highlight":[285],"available":[288],"biodiversity":[290],"managers":[291],"due":[292],"advances":[294],"remote":[296],"sensing":[297],"technology.":[298],"key":[308],"element":[309],"management":[312],"biodiversity.":[315]},"counts_by_year":[],"updated_date":"2026-11-09T13:22:03.289127","created_date":"2016-06-24T00:00:00"}
