Wavelet based feature modulation watermarks and related applications
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 30, 2004
Grant Date -
N/A
app pub date -
Aug 24, 2000
filing date -
Aug 24, 2000
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A watermark embedder decomposes a media signal from its perceptual domain to subbands and embeds a message signal in the edge information of neighboring coefficients of those subbands. A compatible watermark decoder decomposes the watermarked signal into subbands and demodulates the message signal from the edge information of neighboring coefficients. In addition to the message signal, the embedder may also encode an orientation signal to synchronize the decoder with the embedded signal in a distorted version of the watermarked signal. The watermark system may be used in a variety of applications, including robustly carrying metadata or links to metadata, and to detect alterations of the watermarked signal, such as alterations due to printing, scanning, compression, etc.
First Claim
Family
International Classification(s)
- No Non-US Classification to display
Cited Art Landscape
Patent Citation Ranking
- No Patent Citation Ranking to display
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully