基于小波掩模的自适应图像SVD水印算法

Image-adaptive SVD watermarking algorithm based on wavelet perceptual model

基于小波掩模给出了一种奇异值分解盲水印算法,算法自适应于图像特征。算法用重要小波系数确定不同图像特征对应的量化步长,以达到最大化水印嵌入强度的目的,在透明性和鲁棒性之间实现了较好的平衡。实验结果表明,对于常见的图像处理操作均有较好的鲁棒性。

A SVD blind watermarking algorithm was proposed using a wavelet perceptual model, which was adaptive to the host image features, In order to maximize the intensity of watermark embedding, the quantization steps associated with different image features were determined by the significant wavelet coefficients, and a good tradeoff between the transparency and the robustness of the algorithm was achieved. Experiments show that the proposed algorithm is effective and robust to common image processing operations,