基于奇异值分解的三维彩码零水印算法

A Zero-Watermark Algorithm Based on SVD for Color Code Image

随着3G时代的到来和迅速发展，三雏彩码作为新型条码技术产品将越来越被人们所熟知，但其版权保护问题也随之而来。该文提出了基于奇异值分解的零水印算法，在分块的基础上采用奇异值的不变特性来构造零水印，保证了在不改变宿主图像的同时对三维彩码进行有效地版权保护。仿真实验结果表明，该算法简单有效，适用性强，而且对常见攻击如滤波、噪声．JPEG压缩、剪切等具有较强的鲁棒性。

Along with the coming and rapid development of 3G era, as a new bar code technology products, the color code will be increasingly well known, however, the copyright protection problems also appear. This paper proposes a zero watermark algorithm based on SVD. The original image is divided into blocks, and then the invariant properties of singular value are used to construct zero-watermark, which ensure that the watermarked image distortion free and can protect the copyright effectively. Experimental results show that the pro- posed algorithm is simple, effective, applicability, and is robust against common processing such as filtering, noise, JPEG compression, and cropping.