Alati za implementaciju i detekciju nevidljivih vodenih žigova u digitalnim slikama

Antun Koren, Ivan Dunđer, Tibor Skala

Sažetak

Cilj rada jest istražiti utjecaj primjene alata za implementaciju nevidljivih digitalnih vodenih žigova na konzistentnost i strukturu digitalnih slika na kojima je vodeni žig primijenjen. Nevidljivi digitalni vodeni žigovi predstavljaju zaštitnu tehnologiju koja omogućuje neprimjetnu implementaciju skrivenih digitalnih poruka u već postojeći digitalni objekt. Ta tehnologija obuhvaća kriptografiju i steganografiju što detekciju nevidljivih vodenih žigova znatno otežava. Radom se ispitala robusnost nevidljivih digitalnih žigova prilikom transformacije digitalne slike te naglasila uloga nevidljivih digitalnih vodenih žigova u prevenciji zlouporabe autorskih prava. Također su analizirani postupci koje alati za implementaciju i detekciju nevidljivih vodenih žigova primjenjuju.
Ključne riječi: nevidljivi vodeni žig, alati za implementaciju i detekciju nevidljivih vodenih žigova, zaštita autorskog prava, steganografija
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