Naslov
The Influence of Watermark Properties on the Quality of a Watermarked Image

Autori
Poljičak, Ante ; Mandić, Lidija ; Agić, Darko ; Strgar Kurečić, Maja

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

Izvornik
Proceedings of the 52nd International Symposium ELMAR-2010 / Grgić, Mislav ; Božek, Jelena ; Grgić, Sonja - Zagreb : Hrvatsko društvo Elektronika u pomorstvu (ELMAR), 2010, 127-130

ISBN
978-953-7044-11-4

Skup
International Symposium ELMAR

Mjesto i datum
Zadar, Hrvatska, 15.09.2010. - 17.09.2010

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Watermarking; Image Quality; PSNR; Image Processing

Sažetak
In this paper we evaluate degradation of an image due to the implementation of a watermark in the frequency domain of the image. As a metric Peak Signal to Noise Ratio (PSNR) is used. The degradation is calculated for three different cases, the strength of the watermark implementation, the frequencies that are modified by the watermark implementation, and the length of the watermark. The watermark is embedded in magnitudes of the Fourier transform. The obtained results have shown that the quality of the watermarked image can be augmented if one takes into account radius of the watermark implementation as well as number of bits implemented.

Izvorni jezik
Engleski

Znanstvena područja
Grafička tehnologija

POVEZANOST RADA