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Pregled algoritama za povećanje vremenske rezolucije videosignala
Filip Žagar (2017)
Josip Juraj Strossmayer University of Osijek
Faculty of Electrical Engineering, Computer Science and Information Technology Osijek
Department of Communications
Chair of Radiocommunications and Telecommunications
Cite this document

Žagar, F. (2017). Pregled algoritama za povećanje vremenske rezolucije videosignala (Undergraduate thesis). Retrieved from https://urn.nsk.hr/urn:nbn:hr:200:743929

Žagar, Filip. "Pregled algoritama za povećanje vremenske rezolucije videosignala." Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Faculty of Electrical Engineering, Computer Science and Information Technology Osijek, 2017. https://urn.nsk.hr/urn:nbn:hr:200:743929

Žagar, Filip. "Pregled algoritama za povećanje vremenske rezolucije videosignala." Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Faculty of Electrical Engineering, Computer Science and Information Technology Osijek, 2017. https://urn.nsk.hr/urn:nbn:hr:200:743929

Žagar, F. (2017). 'Pregled algoritama za povećanje vremenske rezolucije videosignala', Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Faculty of Electrical Engineering, Computer Science and Information Technology Osijek, accessed 10 April 2020, https://urn.nsk.hr/urn:nbn:hr:200:743929

Žagar F. Pregled algoritama za povećanje vremenske rezolucije videosignala [Undergraduate thesis]. Osijek: Josip Juraj Strossmayer University of Osijek, Faculty of Electrical Engineering, Computer Science and Information Technology Osijek; 2017 [cited 2020 April 10] Available at: https://urn.nsk.hr/urn:nbn:hr:200:743929

F. Žagar, "Pregled algoritama za povećanje vremenske rezolucije videosignala", Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Faculty of Electrical Engineering, Computer Science and Information Technology Osijek, Osijek, 2017. Available at: https://urn.nsk.hr/urn:nbn:hr:200:743929

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Metadata
TitlePregled algoritama za povećanje vremenske rezolucije videosignala
Title (english)Overview of algorithms for incresing of video temporal resolution
AuthorFilip Žagar
MentorMario Vranješ (mentor)
Committee memberMario Vranješ (predsjednik povjerenstva)
Committee memberZdravko Krpić (član povjerenstva)
Committee memberKrešimir Grgić (član povjerenstva)
GranterJosip Juraj Strossmayer University of Osijek
Faculty of Electrical Engineering, Computer Science and Information Technology Osijek
(Department of Communications)
(Chair of Radiocommunications and Telecommunications)
Osijek
Defense date and country2017-09-11, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Electrical Engineering
Telecommunications and Informatics
Abstract
Radi očuvanja mrežnih resursa i omogućavanja dovoljno brzog prijenosa videosignala u uvjetima malih brzina prijenosa potrebno je smanjiti količinu podataka za prijenos. Smanjenje količine podataka za prijenos izvršava se kodiranjem videosignala s ciljem smanjenja vremenske rezolucije. Nakon prijenosa mrežom istim video sadržajima potrebno je povećati vremensku rezoluciju kako bi bili prikladni za prikaz na uređajima koji podržavaju videosadržaj visoke prostorne i vremenske rezolucije. U radu je ispitana kvaliteta interpoliranih slika dobivenih korištenjem nekih od postojećih algoritama za povećanje vremenske rezolucije videosignala. Za analizu su odabrana dvije algoritma koja koriste isključivo prostorne značajke videosignala (FA i FR) te dva algoritma koji koriste prostorne i vremenske značajke videosignala (AST-LS i AST-FS). U okviru usporedbe algoritama koji koriste samo prostorne značajke videosignala uočena je prednost u kvaliteti interpoliranih slika sa FA algoritmom uz približno jednaku računalnu zahtjevnost i vrijeme izvedbe. FA algoritam je pokazao najveću razinu kvalitete interpolirane slike za videosadržaje male vremenske aktivnosti dok za sadržaje velike vremenske aktivnosti prednjače algoritmi koji koriste vremenske i prostorne značajke videosignala. Usporedbom AST-LS i AST-FS algoritama kao bolje rješenje pokazao se AST-LS zbog manje računalne kompleksnosti uz gotovo jednake rezultate kvalitete interpoliranih slika. Za objektivnu ocjenu interpoliranih slika korištene su PSNR i SSIM metrike.
Abstract (english)
For the purpose of efficient usage of network resources and enabling fast transmission it is needed to reduce amount of video signal data. Amount of the data for transmission is reduced by reducing temporal resolution in the coding process. After transmission over the network, it is needed to perform algorithms for frame rate-up conversion to make the video signal suitable for reproduction on devices supporting videos with high spatial and temporal activity. In this thesis, quality of interpolated images was measured. Interpolated images were made with some of already proposed algorithms for frame rate up-conversion. Two of the analyzed algorithms (FR and FA) use only spatial features of video signal and other two algorithms use spatial and temporal features of video signal (AST-FS and AST-LS). The FA algorithm shows much better quality of interpolated images compared to the FR with similar computational complexity and execution time. In case of very slow video sequences, the FA algorithm shows the best results of interpolated image quality but in case of very fast video sequences, algorithms that use spatial and temporal features of video signal are leading. The AST-LS, in comparison with the AST-FS, was revealed as a better decision because of similar quality of interpolated images but less computationally complex. PSNR and SSIM metrics were used for objective interpolated image evaluation.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:200:743929
Study programmeTitle: Undergraduate University Study Programme
Study programme type: university
Study level: undergraduate
Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka elektrotehnike (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka elektrotehnike)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of usehttp://rightsstatements.org/vocab/InC/1.0/
Created on2017-11-06 16:41:40