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Title:Steganografski algoritem za skrivanje podatkov v digitalnem videu : magistrsko delo
Authors:ID Henčič, Jan (Author)
ID Lukač, Niko (Mentor) More about this mentor... New window
Files:.pdf MAG_Hencic_Jan_2020.pdf (5,34 MB)
MD5: 0ACAC605B8A7DE72800DB750A54B1EC0
PID: 20.500.12556/dkum/fd425e6e-a64f-4392-b3d1-d17b623fabbe
 
Language:Slovenian
Work type:Master's thesis/paper
Typology:2.09 - Master's Thesis
Organization:FERI - Faculty of Electrical Engineering and Computer Science
Abstract:V magistrskem delu predstavimo moderno steganografsko metodo za shranjevanje skrivnih podatkov v video vsebine ter omogočimo skrivanje poljubnih sporočil v izbrane odseke video posnetka. Posnetek najprej pretvorimo v frekvenčno domeno s pomočjo diskretne kosinusne transformacije, kamor se nato shranijo podatki s pomočjo metode F5. Skrivni podatki so pred shranjevanjem dodatno zaščiteni s kriptiranjem. Stisnjeni posnetki se nato v pretočni obliki preko mreže pošljejo prejemniku. Prejemnik izvede inverzni postopek in izloči skrivna sporočila. Pri steganografiji je bistveno, da ostane obstoj komunikacije prikrit. Zaradi tega je v delu izvedena tudi primerjava podobnosti izvornih posnetkov s tistimi, ki imajo v sebi skrite podatke. V rezultatih pokažemo, da večja količina skritih podatkov bolj vpliva na kvaliteto, kar je bolj opazno pri animacijah in posnetkih nižje ločljivosti. Najbolj primerni za shranjevanje podatkov so naravni posnetki višjih ločljivosti.
Keywords:skrivanje podatkov, steganografija, frekvenčna domena, video vsebina
Place of publishing:Maribor
Place of performance:Maribor
Publisher:[J. Henčič]
Year of publishing:2020
Number of pages:VII, 35 f.
PID:20.500.12556/DKUM-75769 New window
UDC:004.62.021(043.2)
COBISS.SI-ID:23071766 New window
NUK URN:URN:SI:UM:DK:HVHDUQNV
Publication date in DKUM:09.03.2020
Views:1251
Downloads:191
Metadata:XML DC-XML DC-RDF
Categories:KTFMB - FERI
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Licences

License:CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Link:http://creativecommons.org/licenses/by-nc-nd/4.0/
Description:The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.
Licensing start date:30.01.2020

Secondary language

Language:English
Title:Steganographic algorithm for data hiding in digital video
Abstract:In this thesis we present a new steganographic method for storing secret data in video content. The method allows hiding selected messages in sections of video files. Our chosen video is converted into the frequency domain representation with the discrete cosine transform. The secret data is encrypted and then stored in the video with the F5 method. The video is then compressed and sent over the network to the recipient. The recipient then performs an inverse procedure and extracts the secret messages. In steganography, it is essential to keep the existence of communication hidden. For this reason, the work compares the similarity of the original videos with those with secret information hidden in them. The results show that larger amounts of hidden data have a bigger effect on video quality, which is more noticeable on lower-resolution videos and animations. High resolution realistic videos are best suited for data hiding.
Keywords:data hiding, steganography, frequency domain, video files


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