摘要
实现了在DCT域中将一幅二值图像经过加密后,嵌入到一段音频信号,并成功实现了在含水印的音频信号当中提取出原始二值图像。水印提取需要3个密钥,有效地保证了水印信息的安全。最后还对该水印算法进行了抗低通滤波、抗噪声的性能测试。
The insertion of an encrypted image into the audio signal is implemented DCT region, and then the original image is successfully extracted from the audio signal contained with image watermark. The watermark extraction requires three keys, thus to ensure the security of watermark information, and finally the performance test is done on anti-lowpass filtering and anti-noise of the waterwarking algorithm.
出处
《通信技术》
2013年第3期52-54,共3页
Communications Technology
关键词
数字水印
DCT
M序列
抗低通
抗噪声
digital watermark
DCT
m-sequence＂ anti-lowpass＂ anti-noise
