Title :
Error exponents for one-bit watermarking
Author :
Liu, Tie ; Moulin, Pierre
Author_Institution :
Beckman Inst. for Adv. Sci. & Technol., Illinois Univ., Urbana, IL, USA
Abstract :
Quantization index modulation (QIM) is a powerful host-interference rejecting method for data hiding. The paper applies QIM to one-bit watermarking and proposes a simple but powerful watermark detector. We derive lower bounds on the error exponents for the detector under a quadratic distortion constraint for the watermarker and additive white Gaussian noise attacks. These bounds are independent of the host-signal distribution and are substantially better than recently derived bounds for public (blind) spread-spectrum watermarking.
Keywords :
AWGN; data encapsulation; interference suppression; modulation; nonlinear distortion; quantisation (signal); signal processing; watermarking; additive white Gaussian noise; data hiding; error exponent lower bounds; error exponents; host-interference rejection; host-signal distribution; one-bit watermarking; quadratic distortion; quantization index modulation; spread-spectrum watermarking; watermark detector; Covariance matrix; Data encapsulation; Detectors; Interference; Mathematical model; Quantization; Spread spectrum communication; Testing; Tin; Watermarking;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 2003. Proceedings. (ICASSP '03). 2003 IEEE International Conference on
Print_ISBN :
0-7803-7663-3
DOI :
10.1109/ICASSP.2003.1199108
