Naslov
Analysis of the GCR Communication Channel For Image Steganography

Autori
Poljičak, Ante ; Donevski, Davor ; Jelušić, Petar Branislav ; Tomašegović, Tamara ; Cigula, Tomislav

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings ELMAR-2019 / Muštra, Mario ; Vuković, Josip ; Zovko-Cihlar, Branka - Zagreb : Fakultet elektrotehnike i računarstva Sveučilišta u Zagrebu, 2019, 65-68

ISBN
978-1-7281-2182-6

Skup
61st International Symposium Electronics in Marine (ELMAR 2019)

Mjesto i datum
Zadar, Hrvatska, 23.09.2019. - 25.09.2019

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Gray Component Replacement ; Image Quality ; Data hiding ; DFT ; DCT

Sažetak
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.

Izvorni jezik
Engleski

Znanstvena područja
Grafička tehnologija

POVEZANOST RADA