摘要
数字水印的主要研究目的是版权保护。依据DCT域系数的特点,提出了一种DCT域的音频水印算法,先将音频数据按固定长度分段,然后对每段进行DCT变换,利用当前水印调制DCT直流系数,达到嵌入目的。实验表明,算法具有较好的透明性,并经Stirmark软件攻击测试具有较强的鲁棒性。
The main research aim of digital watermark is copyright protection.According to characteristics of DCT coefficients,a DCT domain audio watermark algorithm is proposed.First,Original audio data is divided into pieces with fixed length.Then,Watermark information is embedded by modulating DC coefficients of DC matrixes.The experiments show it does well in transparency and robustness after Stirmark software attacks.
出处
《计算机工程与应用》
CSCD
北大核心
2006年第20期41-43,共3页
Computer Engineering and Applications
基金
山东省优秀中青年科学家科研奖励基金资助(编号:2004BS01005)
关键词
离散余弦变换
量化
透明性
鲁棒性
DCT Transform, quantization, transparency, robustness
