基于图像特征的二值水印嵌入和盲检算法

Embedding and Blind Detection Scheme for Binary Watermarking Based on Image Feature

提出了一种基于图像特征的二值水印嵌入和盲检测算法。将原始图像及待检测的图像进行离散小波变换,通过提取低频子带变换系数的均差与设定的阈值相比较,根据不同的结果选择不同的算法从而实现水印序列的嵌入和盲提取。该算法的优点在于在水印检测时,不需要原始图像的参与。实验结果表明,算法对JPEG压缩具有强的抵抗能力,同时,对噪声、滤波等也具有较好的鲁棒性。

An embedding and blind detection scheme for binary watermarking based on image feature is presented in this paper.After the original image and watermarked image are transformed by the DWT,the average values of the DWT coefficients of which are compared with a threshold for the determination of the corresponding algorithm of embedding and detection of watermark,realizing the embedding and detection of the binary watermark sequence.The proposed algorithm has the advantage that the retrieval of the embedded watermark does not need the original watermark image.Experimental results demonstrate that the watermarking scheme proposed in this paper is robust to JPEG Compression,and also has good robustness to noise and filtering.