摘要
提出一种基于Turbo码的数字水印方案。该算法既对水印图像进行编码,又对载体图像进行编码。编码数据在经过较低信噪比的信道传输后,由解码算法能同时恢复水印和载体图像。不同于传统数字水印方法,本文方案要求接收用户掌握Turbo解码密钥,方能正确恢复水印和载体图像。本文给出了方案设计流图,然后给出仿真实验结果,仿真结果表明算法在通信中保护水印和载体图像方面是可行的。
This paper propeses a scheme of digital watermark based on Turbo coding. The algorithm of the paper encodes not only the watermark picture, but also the carrier picture. After transmitting via the channel with lower SNR, both the watermark and the carrier picture can be resumed by using our algorithm. Different from the classical watermarking schemes, the approach requires that the receiver masters the Turbo code key to recover the watermark and the carrier picture. This paper has proposed the flow chart of conceptual design, then provided the simulated experiment result. At last, the analysis of the results shows that the algorithm in this paper is feasible to protect the watermark and carrier picture.
出处
《计算机与数字工程》
2006年第3期28-31,共4页
Computer & Digital Engineering
基金
北京交通大学"十五"科技攻关项目
关键词
水印
信息隐藏
TURBO码
Watermarking, Information hiding, Turbo coding
