Robust VQ-Based Digital Image Watermarking for Noisy Channel

Authors:
Chuang Lin;Jeng-Shyang Pan
Affiliations:
Harbin Institute of Technology, China;National Kaohsiung University of Applied Sciences, Taiwan
Venue:
ICICIC '06 Proceedings of the First International Conference on Innovative Computing, Information and Control - Volume 3
Year:
2006

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Abstract

In this paper, a robust VQ-based digital image watermarking scheme for noisy channel is proposed. Before the watermarking process, the genetic codebook partition technique is adopted for VQ codebook generation in order to get higher PSNR values between original and watermarked images, and then a new index partition algorithm is proposed to improve the bit-correct-rate of extracted watermarks. During the index transmission of watermarked image, a genetic algorithm based energy allocation scheme is adopted to resist the channel noise.