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Steganografija i vodeni žig u zaštiti digitalnih slika (2003)

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Vatroslav Mihalj

Old presentation (2003) on watermarks and steganography (for digital image protection)

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Steganografija i vodeni žig u zaštiti digitalnih slika Vatroslav Mihalj 2003.
Sadržaj ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Intro: problemi u svijetu digitalno pohranjenih podataka
Digitalna pohrana podataka ,[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
I. Zamisao steganografije
Što je steganografija ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Jednostavna ilustracija principa steganografije
Shema ugradnje i ekstrakcije skrivenih podataka
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Steganografija u slikama ,[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
 
Steganaliza ,[object Object],[object Object],[object Object],[object Object]
II. Principi i tehnike steganografije
Tehnike ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Osnovna pitanja ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
 
 
Gledište teorije informacije ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
N ačini ugradnje podataka u slikama ,[object Object],[object Object],[object Object]
Manipulacija LSb ,[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Maskiranje i filtriranje ,[object Object],[object Object],[object Object]
Algoritmi i transformacije ,[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object]
Vrste ugradnje ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Image domain metode ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object]
Ugradnja i ekstrakcija podataka u image domain metodama
[object Object],[object Object],[object Object]
Flippable pixels ,[object Object],[object Object],[object Object]
[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object]
Primjer: potpis ,[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object]
Primjer: patent ,[object Object],[object Object]
 
Transform domain metode ,[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object]
Shema ugradnje transform domain metodama
[object Object]
III. Problemi steganografije
Problemi ,[object Object],[object Object],[object Object]
[object Object]
Nejednak kapacitet skrivanja ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Primjeri skrivenih sadržaja ,[object Object]
[object Object]
IV. Primjena steganografije
Problemi ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object]
Kako spriječiti? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Autentikacija digitalnih slika ,[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
K ategorije autentikacije slike ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Primjer: Stega Card ,[object Object],[object Object],[object Object]
 
V. Vodeni žig
V odeni žig ,[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object]
[object Object],[object Object],[object Object],[object Object]
O dnos steganografije i vodenog žiga ,[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object]
 
P rimjene vodenog žiga ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Poželjna svojstva žiga ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Vrste vodenog žiga ,[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object]
Vidljivost žigova ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
VI. Metode vodenog žiga
Dizajn ugrađenih podataka ,[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object]
Spread spectrum ,[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object]
P rimjer: Digimarc ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Primjer: Cox algoritam ,[object Object],[object Object],[object Object],[object Object]
Primjer: Patchwork ,[object Object],[object Object],[object Object],[object Object],[object Object]
Primjer: Low spatial watermark ,[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Primjer: Min Wu authentication watermark ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object]
 
Min Wu: princip ugradnje ,[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
 
[object Object],[object Object],[object Object],[object Object]
VII. Sigurnost vodenog žiga
Zahtjevi od vodenog žiga ,[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object]
Napadi na žig i protumjere ,[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Zamjena bloka ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
 
[object Object],[object Object],[object Object]
R educira nje efikasnost i napada ,[object Object],[object Object],[object Object]
[object Object],[object Object]
Geometrijski napadi ,[object Object],[object Object],[object Object]
Double capturing napad ,[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object]
[object Object],[object Object],[object Object]
 
[object Object],[object Object],[object Object]
 
Napadi na robustne žigove ,[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Napadi na lomljive žigove ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Infrastrukture za dokazivanje vlasništva ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
SDMI ,[object Object],[object Object],[object Object],[object Object]
[object Object]
Resursi
[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object]
 

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