一种基于数字水印的MP3作品版权保护的实现

An implementation of MP3 copyright protection based on digital watermarking

在分析MP3编码和帧结构的基础上,利用数字水印技术,提出了一种版权保护的数字水印算法。首先,将二值图像水印进行置乱加密,提高了水印信息的安全性;其次,采用对长窗中的中频对应的比例因子进行修改的策略,保证了水印的不可感知性,并且该算法实现了版权水印的盲提取;最后通过仿真实验证明,该算法不仅具有较好的透明性,而且对诸如白噪声、低通滤波、重采样、回声、剪切、压缩等攻击均具有较好的鲁棒性。

MP3 encoding and frame structure is analyzed, on the base of the digital watermarking technology, a new copyright-protected digital watermarking algorithm is proposed. First, the binary image watermarking is encrypted to improve the security of watermark information; secondly, the scale-factor of intermediate frequency in the long windows is modified to the watermark imperceptibility, and the copyright watermarking can be extracted without the help from the original MP3. Finally, the simulation results show that the algorithm not only has better transparency, but also such as white noise, low-pass filtering, resampling, echo, shearing, compression and other attacks have robust.