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


Poljičak, Ante; Mandić, Lidija; Agić, Darko; Strgar Kurečić, Maja
The Influence of Watermark Properties on the Quality of a Watermarked Image // Proceedings of the 52nd International Symposium ELMAR-2010 / Grgić, Mislav ; Božek, Jelena ; Grgić, Sonja (ur.).
Zagreb: Croatian Society Electronics in Marine, 2010. str. 127-130 (predavanje, međunarodna recenzija, cjeloviti rad (in extenso), znanstveni)


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 : Croatian Society Electronics in Marine, 2010, 127-130

ISBN
978-953-7044-11-4

Skup
International Symposium ELMAR

Mjesto i datum
Zadar, Hrvatska, 15.-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


Projekt / tema
036-0361630-1635 - Upravljanje kvalitetom slike u radiodifuziji digitalnog videosignala (Sonja Grgić, )
128-1201785-2228 - Razvoj metoda mjerenja površina tiskovnih formi (Miroslav Gojo, )
128-1281957-1958 - Digitalizacija muzejske slikarske baštine (Darko Agić, )

Ustanove
Grafički fakultet, Zagreb