基于SVD的图像零水印技术研究

Study of Image Zero-Watermark Technology Based on SVD

提出一种基于SVD的图像零水印算法,该算法通过对原始图像分块奇异值分解,然后对每块的最大奇异值量化处理,结合版权图像构造零水印。实验证明,该算法能够有效抵御各种常见的图像处理攻击,尤其对于JPEG压缩具有很强的鲁棒性。

An algorithm for image zerowatermark based on SVD （Singular Value Decomposition） is proposed in this paper. It implements Block-SVD with the original image, and then quantizes the maximum singular value of each block to construct the zero-digital watermark combining copyright symbol. Experiments show that it has good capability of resisting common attacks, and has strong robustness especially to JPEG compressing.