30-07-2011, 11:03 AM
Watermarking.ppt (Size: 292 KB / Downloads: 126)
Watermark = Water (Invisible) + Mark
Media Copyright Protection
- Develop of e-commerce
- Ownership
Two Different Viewpoints
- Watermark-as-signal
- Watermark-as-information
Why Watermarking?
Secure Distribution of Digital Contents
- Unlimited copies of original contents
- Instant distribution over internet
- Quick download of compressed streams
Content Protection
- Authentication
- Encryption/Decryption
- Watermarking