1 March 2007 Robust multirate lattice quantization index modulation watermarking resilient to multiple description transmission channel
Author Affiliations +
Optical Engineering, 46(3), 037005 (2007). doi:10.1117/1.2715597
Abstract
Multiple-description (MD) transmission results in nonlinear value-metric (value-scaling) distortion in the case when some of the sent descriptions are not received. An acceptable image can still be received in the above situation due to the characteristic of MD. However, it is quite damaging to the traditional quantization-based watermarking technique for payload detection. To overcome the problem, a straightforward approach would be to increase the quantization step size in watermark embedding so as to keep the distortion within the tolerant range. However, as a larger quantization step size in watermark embedding would result in a worsened watermarked image, it is not feasible to adopt it without further consideration. The proposed multirate lattice quantization index modulation (MRL-QIM) encodes two watermark bits into each of the four co-set points of a lattice (so-called multirate). Compared to traditional vector-based quantization encoding or combined spread spectrum-quantization encoding, it significantly increases the payload (capacity) and enhances the robustness of watermark detection while preserving the fidelity of the watermarked image. Comprehensive experiments have confirmed that the overall performance and the effectiveness of the proposed scheme are superior to previous approaches.
Miin-Luen Day, Suh-Yin Lee, I-Chang Jou, "Robust multirate lattice quantization index modulation watermarking resilient to multiple description transmission channel," Optical Engineering 46(3), 037005 (1 March 2007). https://doi.org/10.1117/1.2715597
JOURNAL ARTICLE
9 PAGES


SHARE
KEYWORDS
Digital watermarking

Quantization

Modulation

Distortion

Optical engineering

Monte Carlo methods

Signal detection

RELATED CONTENT

Orthogonal dirty paper coding for informed data hiding
Proceedings of SPIE (June 22 2004)
Nth-order audio watermarking
Proceedings of SPIE (April 29 2002)
Performance of a practical blind watermarking scheme
Proceedings of SPIE (August 01 2001)
A novel interpretation of content authentication
Proceedings of SPIE (March 01 2007)

Back to Top