{"?xml":{"@version":"1.0"},"edm: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-HTVL50P3/def43e78-2f9d-4c0e-97d2-99ad163375a3/HTML","dcterms:extent":"26 KB"},{"@rdf:about":"http://www.dlib.si/stream/URN:NBN:SI:DOC-HTVL50P3/05b63e45-8ae5-4992-b6b4-8256833868d9/PDF","dcterms:extent":"546 KB"},{"@rdf:about":"http://www.dlib.si/stream/URN:NBN:SI:DOC-HTVL50P3/acc847a5-cbfc-459a-a353-ac728297de20/TEXT","dcterms:extent":"23 KB"}],"edm:TimeSpan":{"@rdf:about":"2006-2025","edm:begin":{"@xml:lang":"en","#text":"2006"},"edm:end":{"@xml:lang":"en","#text":"2025"}},"edm:ProvidedCHO":{"@rdf:about":"URN:NBN:SI:DOC-HTVL50P3","dcterms:isPartOf":[{"@rdf:resource":"https://www.dlib.si/details/urn:nbn:si:spr-0y5dimiu"},{"@xml:lang":"sl","#text":"Elektrotehniški vestnik"}],"dcterms:issued":"2008","dc:creator":["Fras, Matjaž","Planinšič, Peter"],"dc:format":[{"@xml:lang":"sl","#text":"številka:1/2"},{"@xml:lang":"sl","#text":"6 strani"},{"@xml:lang":"sl","#text":"letnik:75"},{"@xml:lang":"sl","#text":"str. 70-75"}],"dc:identifier":["ISSN:0013-5852","COBISSID:12329750","ISSN:2232-3236","URN:URN:NBN:SI:doc-HTVL50P3"],"dc:language":"sl","dc:publisher":{"@xml:lang":"sl","#text":"Elektrotehniška zveza Slovenije"},"dc:subject":[{"@xml:lang":"sl","#text":"digitalni video"},{"@xml:lang":"sl","#text":"kodek"},{"@xml:lang":"sl","#text":"kodiranje signalov"},{"@xml:lang":"sl","#text":"kvaliteta"},{"@xml:lang":"sl","#text":"stiskanje podatkov"},{"@xml:lang":"sl","#text":"šum"},{"@xml:lang":"sl","#text":"videosignali"},{"@rdf:resource":"http://www.wikidata.org/entity/Q24388800"}],"dcterms:temporal":{"@rdf:resource":"2006-2025"},"dc:title":{"@xml:lang":"sl","#text":"Kakovost digitalnega videa pri prenosu prek šumnega kanala (kodek na osnovi DCT in DWT)|"},"dc:description":{"@xml:lang":"sl","#text":"Članek opisuje vpliv kvantizacijske stopnice na kakovost digitalnega videa pri transformacijskem kodiranju videosignala. Transformacijsko kodiranje smo izvedli enkrat s pomočjo diskretne kosinusne transformacije (DCT) in drugič z diskretno valčno transformacijo (DWT). Kodeka DCT in DWT smo implementirali v programskem paketu Matlab-Simulink. Simulirali smo vpliv kvantizacije na kakovost videosignala, prav tako pa smo proučili kakovost sprejetega digitalnega videosignala pri prenosu prek šumnega kanala. Če odmislimo pojav blkovnega efekta pri DCT-kodeku in efekt razmazanja pri DWT-kodeku, zaradi kvantizacije, se pri prenosu digitalnega (kodiranega) videa preko prenosnega kanala poslabša njegova kakovost zaradi prisotnosti šumov. Pri DCT-kodeku je šum prenosnega kanala vplival na celoten kodiran blok, pri DWT-kodeku pa le na okolico slikovnih elementov"},"edm:type":"TEXT","dc:type":[{"@xml:lang":"sl","#text":"znanstveno časopisje"},{"@xml:lang":"en","#text":"journals"},{"@rdf:resource":"http://www.wikidata.org/entity/Q361785"}]},"ore:Aggregation":{"@rdf:about":"http://www.dlib.si/?URN=URN:NBN:SI:DOC-HTVL50P3","edm:aggregatedCHO":{"@rdf:resource":"URN:NBN:SI:DOC-HTVL50P3"},"edm:isShownBy":{"@rdf:resource":"http://www.dlib.si/stream/URN:NBN:SI:DOC-HTVL50P3/05b63e45-8ae5-4992-b6b4-8256833868d9/PDF"},"edm:rights":{"@rdf:resource":"http://rightsstatements.org/vocab/InC/1.0/"},"edm:provider":"Slovenian National E-content Aggregator","edm:intermediateProvider":{"@xml:lang":"en","#text":"National and University Library of Slovenia"},"edm:dataProvider":{"@xml:lang":"sl","#text":"Elektrotehniška zveza Slovenije"},"edm:object":{"@rdf:resource":"http://www.dlib.si/streamdb/URN:NBN:SI:DOC-HTVL50P3/maxi/edm"},"edm:isShownAt":{"@rdf:resource":"http://www.dlib.si/details/URN:NBN:SI:DOC-HTVL50P3"}}}}