20.500.12556/RUL-125661 Uporaba analize stopnje napak za odkrivanje prirejanja slik Using Error Level Analysis to Detect Image Manipulation Dandanes se na vsakem koraku srečujemo z digitalnimi slikami, bodisi na družbenih omrežjih bodisi v novicah. Skoraj vsak posameznik ima dostop do programov za obdelovanje slik, zato je preverjanje njihove avtentičnosti še tako pomembno. Slike se prav tako uporabljajo kot dokazi v forenzičnih preiskavah. V diplomski nalogi smo se lotili pregleda različnih pristopov za preverjanje avtentičnosti slik. Preučili smo metodo analize stopnje napak (angl. error level analysis). Metodo smo implementirali v jeziku GNU Octave in ocenili, katere manipulacije slik je možno z njo zaznati. These days we come across digital images around every corner of our day-to-day lives. Whether it is on social media or in the news. Almost every individual has access to image manipulation software, which makes it even more important to check the image's authenticity. Images are also used as evidence in forensic investigations. In this diploma thesis, we examined different approaches to image authentication. We not only studied the error level analysis method that was implemented in the GNU Octave programming language but we also evaluated which image manipulation techniques could be detected with it. digitalna slika digitalna forenzika analiza stopnje napak JPEG DCT digital image digital forensics error level analysis JPEG DCT true false false Slovenski jezik Angleški jezik Diplomsko delo/naloga 2021-03-30 11:50:00 2021-03-30 11:50:09 2022-09-05 03:51:55 0000-00-00 00:00:00 2021 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 26511 58352387 Hlacun_Jan_-_Uporaba_analize_stopnje_napak_za_odkrivanje_prirejanja_slik.pdf Hlacun_Jan_-_Uporaba_analize_stopnje_napak_za_odkrivanje_prirejanja_slik.pdf 1 E57B1D3D760B6D92735E866C0A6AB271 7b73db1d314e6ee4f1ea03ec36f7600a5833ed8a15af1c54eef54ea1d0b60881 c2f335ae-a1bb-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=141481 Fakulteta za računalništvo in informatiko 0 0 0