| 摘要 |
<p>Methods and systems for time-frequency domain watermarking of media signals, such as audio and video signals. An encoding method divides the media signal into segments (Fig.4A, element 401), transforms each segment into a time-frequency representation (Fig.4A, element 403), and computes a time-frequency domain watermark signal based on the time frequency representation (Fig.4A, element 404). It then combines the time-frequency domain watermark signal with the media signal to produce a watermarked media signal (Fig.4A, element 405).</p> |
