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undergraduate thesis
Pregled algoritama za povećanje prostorne rezolucije videosignala
2017. urn:nbn:hr:200:256536
Kokošarević, Hrvoje
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

Kokošarević, H. (2017). Pregled algoritama za povećanje prostorne rezolucije videosignala (Undergraduate thesis). Retrieved from https://urn.nsk.hr/urn:nbn:hr:200:256536

Kokošarević, Hrvoje. "Pregled algoritama za povećanje prostorne 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:200:256536

Kokošarević, Hrvoje. "Pregled algoritama za povećanje prostorne 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:200:256536

Kokošarević, H. (2017). 'Pregled algoritama za povećanje prostorne rezolucije videosignala', Undergraduate thesis, Josip Juraj Strossmayer University of Osijek, Faculty of Electrical Engineering, Computer Science and Information Technology Osijek, accessed 15 June 2022, https://urn.nsk.hr/urn:nbn:hr:200:256536

Kokošarević H. Pregled algoritama za povećanje prostorne rezolucije videosignala [Undergraduate thesis]. Osijek: Josip Juraj Strossmayer University of Osijek, Faculty of Electrical Engineering, Computer Science and Information Technology Osijek; 2017 [cited 2022 June 15] Available at: https://urn.nsk.hr/urn:nbn:hr:200:256536

H. Kokošarević, "Pregled algoritama za povećanje prostorne 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:200:256536

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Metadata
TitlePregled algoritama za povećanje prostorne rezolucije videosignala
Title (english)Overview of algorithms for incresing of video spatial resolution
AuthorHrvoje Kokošarević
MentorMario Vranješ (mentor)
Committee memberMario Vranješ (predsjednik 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 country2017-09-27, Croatia
Scientific / art field,
discipline and subdiscipline		TECHNICAL SCIENCES
Electrical Engineering
Telecommunications and Informatics
Abstract
Problem povećanja prostorne rezolucije videosignala sve je rašireniji jer se videosignali prikazuju na sve većem broju različitih uređaja. Problem je još veći ako se uzima u obzir veličina takvih datoteka. One zauzimaju velike količine memorije uređaja na kojem se nalaze. Ukoliko se takvi signali prenose sa uređaja na uređaj, zauzimaju i velike količine kapaciteta mreže kojom se prenose. U svrhu smanjivanja količine zauzetog prostora za pohranu na uređajima na kojima se videosignali nalaze te u svrhu smanjivanja kapaciteta mreže koju videosignal zauzima prilikom prijenosa, pristupa se kodiranju i smanjivanju prostorne rezolucije videosignala. Kako bi na odredišnom uređaju bio primljen signal u originalnoj rezoluciji, videosignalu se povećava prostorna rezolucija. Moguće je isto obaviti na više načina, a ovaj rad predstavlja pregled algoritama za povećanje prostorne rezolucije videosignala. Odabrane su tri metode koje su posebno objašnjene; metoda najbližeg susjeda, bilinearna interpolacija i bikubična interpolacija, te su na osnovi 5 primjera videosignala (slika) implementirane te metode. Kvaliteta slika kojima je povećana prostorna rezolucija ocijenjena je korištenjem SSIM i PSNR metoda. Iako je odabir algoritma uvelike ovisan o samoj primjeni, na temelju rezultata SSIM i PSNR metoda, optimalne rezultate dala je bikubična interpolacija
Abstract (english)
Video signal is recorded and displayed on many modern devices, such as smartphones, computers, television, smart watches etc. Video files take up a lot of memory space on the device they are saved on, and they also take up a lot of network capacity while they are being transmitted. The solution for this is encoding and decreasing the spatial resolution of video signals. However, the signal needs to be in its original quality when shown on the receiver device. This is when the signal needs to be decoded and its spatial resolution needs to be increased. There are many methods for spatial upscaling of video signals, of which three are explained in this paper; nearest neighbour, bilinear interpolation and bicubic interpolation. These methods were tested via SSIM and PSNR Matlab functions. The efficiency of these methods depends on the aplication, but the best results were found to be for bicubic interpolation, based on SSIM and PSNR.
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:200:256536
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
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Created on2017-11-07 14:27:16