Analysis of the GCR Communication Channel For Image Steganography (CROSBI ID 681747)
Prilog sa skupa u zborniku | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Poljičak, Ante ; Donevski, Davor ; Jelušić, Petar Branislav ; Tomašegović, Tamara ; Cigula, Tomislav
engleski
Analysis of the GCR Communication Channel For Image Steganography
Main motivation behind this investigation is to determine how and to what extend Gray Component Removal (GCR) influences a color image. Specifically how GCR influences images in spatial domain, as well as in Fourier and Cosine domains. This is important to determine in order to develop a data hiding technique that can be used in GCR communication channel. To evaluate the influence of GCR on color images a large dataset is first converted from RGB to CMYK color space with very aggressive GCR. Then the original and the converted images are compared in Fourier and Cosine domains. The results show that the GCR communication channel has a nonlinear impact on the image that depends exclusively on the content of the image. The impact in spatial domain is too severe for watermarking techniques in spatial domain. In contrast, the extent of the impact in frequency domain is low enough so GCR can be used for data hiding techniques based on both DFT and DCT transforms.
Gray Component Replacement ; Image Quality ; Data hiding ; DFT ; DCT
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Podaci o prilogu
65-68.
2019.
objavljeno
Podaci o matičnoj publikaciji
Proceedings ELMAR-2019
Muštra, Mario ; Vuković, Josip ; Zovko-Cihlar, Branka
Zagreb: Fakultet elektrotehnike i računarstva Sveučilišta u Zagrebu
978-1-7281-2182-6
Podaci o skupu
61st International Symposium Electronics in Marine (ELMAR 2019)
predavanje
23.09.2019-25.09.2019
Zadar, Hrvatska