This work addresses the problem of optimum decoding and detection of a multibit, multiplicative watermark hosted by Weibull-distributed features: a situation which is classically encountered for image watermarking in the magnitude-of-DFT domain. As such, this work can be seen as an extension of the system described in a previous paper, where the same problem is addressed for the case of 1-bit watermarking. The theoretical analysis is validated through Monte Carlo simulations. Although the structure of the optimum decoder/detector is derived in the absence of attacks, some experimental results are also presented, giving a measure of the overall robustness of the watermark when attacks are present.

Barni, M., F., B., A., D.R., & A., P. (2003). Optimum decoding and detection of multiplicative watermarks. IEEE TRANSACTIONS ON SIGNAL PROCESSING, 51(4), 1118-1123 [10.1109/TSP.2003.809371].

Optimum decoding and detection of multiplicative watermarks

BARNI, MAURO;
2003

Abstract

This work addresses the problem of optimum decoding and detection of a multibit, multiplicative watermark hosted by Weibull-distributed features: a situation which is classically encountered for image watermarking in the magnitude-of-DFT domain. As such, this work can be seen as an extension of the system described in a previous paper, where the same problem is addressed for the case of 1-bit watermarking. The theoretical analysis is validated through Monte Carlo simulations. Although the structure of the optimum decoder/detector is derived in the absence of attacks, some experimental results are also presented, giving a measure of the overall robustness of the watermark when attacks are present.
Barni, M., F., B., A., D.R., & A., P. (2003). Optimum decoding and detection of multiplicative watermarks. IEEE TRANSACTIONS ON SIGNAL PROCESSING, 51(4), 1118-1123 [10.1109/TSP.2003.809371].
File in questo prodotto:
File Dimensione Formato  
01188753.pdf

non disponibili

Tipologia: Pre-print
Licenza: NON PUBBLICO - Accesso privato/ristretto
Dimensione 333.47 kB
Formato Adobe PDF
333.47 kB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11365/7264
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo