A Robust Procedure for Image Watermarking based on the Hermite Projection Method.
In: Automatika: Journal for Control, Measurement, Electronics, Computing & Communications, Jg. 53 (2012-10-01), Heft 4, S. 335-343
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Zugriff:
A procedure for combined image watermarking and compression, based on the Hermite projection method is proposed. The Hermite coefficients obtained by using the Hermite expansion are used for watermark embedding. The image can be efficiently reconstructed by using a set of Hermite coefficients that is quite smaller than the number of original ones. Hence, the watermark embedding is actually done in the compressed domain, while maintaining still high image quality (measured by high PSNR). The efficiency of the proposed procedure is proven experimentally, showing high robustness even for very strong standard attacks. Moreover, the method is robust not only to the standard attacks, but to the geometrical attacks, as well. The proposed approach can be suitable for different copyright and ownership protection purposes, especially in real-applications that require image compression, such as multimedia and Intemet applications, remote sensing and satellite imaging. [ABSTRACT FROM AUTHOR]
U radu je predložena procedura za umetanje vodenog žiga u sliku i kompresiju slike zasnovana na Hermitovoj projekcijskoj metodi. Odgovarajući koeficijenti, dobiveni kao rezultat primjene razvoja slike u red Hermitovih funkcija, korišteni su za umetanje vodenog žiga (watermark). S obzirom na to da se slika može efikasno rekonstruirati korištenjem znatno manjeg broja Hermitovih koeficijenata u odnosu na broj originalnih koeficijenata slike, umetanje vodenog žiga zapravo je provedeno u domeni kompresije, uz očuvanje visoke kvalitete slike (velika vrijednost PSNR). Učinkovitost predložene procedure ispitana je eksperimentalno i pokazuje značajnu otpornost na uobičajene napade. Osim uobičajenih, procedura pokazuje robusnost i na geometrijske napade. Predloženi pristup može biti korišten u različitim aplikacijama za zaštitu autorskih prava, naročito u aplikacijama koje ujedno zahtijevaju i kompresiju slike, kao što su multimedijske i internetske aplikacije, daljinsko očitavanje podataka i satelitska snimanja. [ABSTRACT FROM AUTHOR]
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Titel: |
A Robust Procedure for Image Watermarking based on the Hermite Projection Method.
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Autor/in / Beteiligte Person: | Stankovic, Srdjan ; Orovic, Irena ; Mobasseri, Bijan G. ; Chabert, Mane |
Zeitschrift: | Automatika: Journal for Control, Measurement, Electronics, Computing & Communications, Jg. 53 (2012-10-01), Heft 4, S. 335-343 |
Veröffentlichung: | 2012 |
Medientyp: | academicJournal |
ISSN: | 0005-1144 (print) |
DOI: | 10.7305/automatika.53-4.228 |
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