【摘要】 本文提出了一种数字图像小波域双水印算法,该方法在检测时依据一个参考水印来动态调整主水印序列各部分的可信度,从而尽量减少攻击造成的影响。实验表明,该算法有效降低了检测错误的概率,显著地提高了扩频水印的抗攻击能力。更多还原

【Abstract】 A wavelet-based dual watermarking algorithm for digital images is proposed in this paper. A reference watermark is utilized to adjust the reliability of different fractions of primary watermark for reducing the influence caused by attack. Experimental results demonstrate that the proposed algorithm is more tamper resistant than general spread spectrum watermark algorithm and the false detection rate is decreased considerably.更多还原