基于跳频技术的图像数字水印算法  

Watermarking Algorithm Based on Frequency Hopping Technique for Image

作　　者：张永平[1] 苏广川[1] 

机构地区：[1]北京理工大学信息科学技术学院电子工程系

出　　处：《北京理工大学学报》2006年第2期152-155,共4页Transactions of Beijing Institute of Technology

基　　金：国家自然科学基金资助项目(60472021)

摘　　要：为了有效地解决数字产品版权保护问题,提出一种基于静止图像小波变换域的盲检测数字水印算法.该算法将数字水印技术与跳频技术相结合,使用密钥控制的跳频图样确定水印的嵌入频带,使嵌入位置在若干不同的频带之间跳变,以增强水印嵌入的随机性和安全性.实验结果表明,在满足水印透明性的同时,水印信息在噪声干扰、图像处理、图像压缩以及各种人为恶意攻击条件下具有很好的鲁棒性.To deal with the problem of digital products copyright protection, an effective blind watermarking algorithm based on the wavelet transform and frequency hopping is proposed. By means of the frequency hopping technique, hopping of the embedding positions from band to band according to the secret key will enhance the randomicity and security. Experimental results show that the algorithm has a good robustness against noise, normal image processing, image compression and malicious attacks.

关 键 词：数字水印 扩谱技术 跳频技术 离散小波变换 

分 类 号：TN919.81[电子电信—通信与信息系统] TP309.2[电子电信—信息与通信工程]