公开(公告)号：US20050025334A1

公开(公告)日：2005-02-03

申请号：US10869178

申请日：2004-06-15

Applicant: Ahmed Tewfik ,  Mitchell Swanson ,  Bin Zhu

Inventor： Ahmed Tewfik ,  Mitchell Swanson ,  Bin Zhu

IPC: G06T1/00 ,  G06K9/00

CPC classification number: G06T1/0028 ,  G06T1/005 ,  G06T2201/0052 ,  G06T2201/0065 ,  G06T2201/0202 ,  G10L19/018

Abstract: A digital watermarking method performs tonal detection on a signal (e.g., audio) to identify tonal and non-tonal components. These components are analyzed to compute appropriate weighting of a digital watermark for the tonal and non-tonal components. This tonal detection method is also used in recovering the watermark. A decoding method performs tonal detection on a watermarked signal, computes weights for tonal and non-tonal components, and recovers the embedded watermark using the weights. The same or different watermark embedding schemes may be used to embed digital watermarks in the tonal and non-tonal components. Tonal analysis is used in conjunction with frequency and temporal shaping to adapt the digital watermark to the signal in which it is embedded.

Abstract translation: 数字水印方法对信号（例如，音频）执行色调检测以识别色调和非音调分量。 分析这些组件以计算用于色调和非音调分量的数字水印的适当加权。 这种色调检测方法也用于恢复水印。 解码方法对水印信号执行色调检测，计算色调和非色调分量的权重，并使用权重恢复嵌入的水印。 可以使用相同或不同的水印嵌入方案来将音频和非音调分量中的数字水印嵌入。 音调分析与频率和时间整形一起使用，以使数字水印适应其嵌入的信号。