<?xml version="1.0"?><rdf:RDF xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:edm="http://www.europeana.eu/schemas/edm/" xmlns:wgs84_pos="http://www.w3.org/2003/01/geo/wgs84_pos" xmlns:foaf="http://xmlns.com/foaf/0.1/" xmlns:rdaGr2="http://rdvocab.info/ElementsGr2" xmlns:oai="http://www.openarchives.org/OAI/2.0/" xmlns:owl="http://www.w3.org/2002/07/owl#" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:ore="http://www.openarchives.org/ore/terms/" xmlns:skos="http://www.w3.org/2004/02/skos/core#" xmlns:dcterms="http://purl.org/dc/terms/"><edm:WebResource rdf:about="http://www.dlib.si/stream/URN:NBN:SI:DOC-6VI8PBDY/091fdfa1-5b61-4ea0-b07e-b3d50f949ff3/HTML"><dcterms:extent>38 KB</dcterms:extent></edm:WebResource><edm:WebResource rdf:about="http://www.dlib.si/stream/URN:NBN:SI:DOC-6VI8PBDY/348964d6-6160-45f4-bb26-1ba96c503f08/PDF"><dcterms:extent>822 KB</dcterms:extent></edm:WebResource><edm:WebResource rdf:about="http://www.dlib.si/stream/URN:NBN:SI:DOC-6VI8PBDY/e7f8a3e8-9d76-4576-a151-03fa77f7897a/TEXT"><dcterms:extent>34 KB</dcterms:extent></edm:WebResource><edm:TimeSpan rdf:about="1973-2013"><edm:begin xml:lang="en">1973</edm:begin><edm:end xml:lang="en">2013</edm:end></edm:TimeSpan><edm:ProvidedCHO rdf:about="URN:NBN:SI:DOC-6VI8PBDY"><dcterms:isPartOf rdf:resource="https://www.dlib.si/details/URN:NBN:SI:spr-GQ2QUCG0" /><dcterms:issued>2000</dcterms:issued><dc:creator>Diaci, Jurij</dc:creator><dc:creator>Kolar, Uroš</dc:creator><dc:format xml:lang="sl">21 strani</dc:format><dc:format xml:lang="sl">številka:61</dc:format><dc:format xml:lang="sl">str. 5-25</dc:format><dc:identifier>ISSN:0351-3114</dc:identifier><dc:identifier>COBISSID:677542</dc:identifier><dc:identifier>URN:URN:NBN:SI:doc-6VI8PBDY</dc:identifier><dc:language>sl</dc:language><dc:publisher xml:lang="sl">Inštitut za gozdno in lesno gospodarstvo</dc:publisher><dc:publisher xml:lang="sl">Univerza v Ljubljani, Biotehniška fakulteta, Oddelek za gozdarstvo &amp; Oddelek za lesarstvo</dc:publisher><dcterms:isPartOf xml:lang="sl">Zbornik gozdarstva in lesarstva</dcterms:isPartOf><dc:subject xml:lang="sl">fotografiranje</dc:subject><dc:subject xml:lang="sl">hemisfera</dc:subject><dc:subject xml:lang="sl">meritve</dc:subject><dc:subject xml:lang="sl">sončno sevanje</dc:subject><dcterms:temporal rdf:resource="1973-2013" /><dc:title xml:lang="sl">Umerjanje objektiva "ribje oko" za fotografijo hemisfere| Calibration of fisheye lenses for hemispherical photography|</dc:title><dc:description xml:lang="sl">Hemispherical photography represents one of the most appropriate methods of estimating averages of solar radiation over extended periods of time. This method is based upon the use of extremely wide-angle fisheye lenses, which produce large projection distortion. To correctly interpret hemispherical photography we have to know the projection characteristics of the fisheye lensin combination with a camera body. This can be achieved through lens calibration. The first part of the article explains in detail the calibration method for fisheye lenses which are used to assess the solar radiation in forest ecology research. In the second part the results of calibration for fisheye lens Sigma8 mm, f/4 (MF, N) are presented. The lens was used on a Nikon F50 camera body</dc:description><dc:description xml:lang="sl">Fotografija hemisfere je v gozdoslovnih raziskavah ena najprimernejših metod za ocenjevanje poprečij sončnega sevanja skozi daljša obdobja. Metoda temelji na uporabi skrajno širokokotnih objektivov ribje oko, ki so znani po velikih popačitvah preslikav. Prvi pogoj za uporabo metode je poznavanje preslikave za kombinacijo fotoaparata in objektiva. Značilnosti preslikave pridobimo s postopkom umerjanja. V prvem delu prispevka opisujemo postopek umerjanja objektiva ribje oko za ocenjevanje sončnega sevanja v gozdoslovnih raziskavah.V drugem delu predstavljamo rezultate umerjanja objektiva ribje oko proizvajalca Sigma 8 mm, f/4 (MF, N), ki ga uporabljamo v kombinaciji s fotoaparatom Nikon F50</dc:description><edm:type>TEXT</edm:type><dc:type xml:lang="sl">znanstveno časopisje</dc:type><dc:type xml:lang="en">journals</dc:type><dc:type rdf:resource="http://www.wikidata.org/entity/Q361785" /></edm:ProvidedCHO><ore:Aggregation rdf:about="http://www.dlib.si/?URN=URN:NBN:SI:DOC-6VI8PBDY"><edm:aggregatedCHO rdf:resource="URN:NBN:SI:DOC-6VI8PBDY" /><edm:isShownBy rdf:resource="http://www.dlib.si/stream/URN:NBN:SI:DOC-6VI8PBDY/348964d6-6160-45f4-bb26-1ba96c503f08/PDF" /><edm:rights rdf:resource="http://rightsstatements.org/vocab/InC/1.0/" /><edm:provider>Slovenian National E-content Aggregator</edm:provider><edm:intermediateProvider xml:lang="en">National and University Library of Slovenia</edm:intermediateProvider><edm:dataProvider xml:lang="sl">Univerza v Ljubljani, Biotehniška fakulteta</edm:dataProvider><edm:object rdf:resource="http://www.dlib.si/streamdb/URN:NBN:SI:DOC-6VI8PBDY/maxi/edm" /><edm:isShownAt rdf:resource="http://www.dlib.si/details/URN:NBN:SI:DOC-6VI8PBDY" /></ore:Aggregation></rdf:RDF>