HVS-DWT算法在数字水印技术中的应用

介绍了一种利用HVS-DWT的数字水印算法,该算法采用人类视觉系统(HVS)和离散小波变换(DWT),将数字水印信息嵌入到中频段,通过多次嵌入水印低频系数,以此增强水印的鲁棒性；最后通过水印提取算法,从含水印的图像中提取出嵌入的水印.试验表明,该算法具有较好的隐蔽性,对噪声等攻击手段具有较好的鲁棒性.

The Application of HVS-DWT Algorithm in the Digital Watermaking Technology

This paper introduces a HVS-DWT digital watermarking algorithm, which adopt the human visual system （HVS） and discrete wavelet transform （DWT）. The digital watermark information is embedded into the band as well as multiple watermarked low- frequency coefficients, thereby enhanced the robustness of the watermark.Through watermark extraction algorithm to get the watermark from the watemmrked image. The results show that the algorithm has a good concealment,as well as a good robustness to noise and other means of attack.