A hierarchical image authentication watermark with improved localization and security.
Mehmet Utku CelikGaurav SharmaEli SaberA. Murat TekalpPublished in: ICIP (2) (2001)
Keyphrases
- image authentication
- watermarking scheme
- jpeg compression
- secret information
- copyright protection
- watermarking algorithm
- semi fragile watermarking
- authentication scheme
- public key
- digital watermarking
- tamper detection
- watermark embedding
- key management
- watermarking technique
- security analysis
- digital images
- information security
- image content
- access control
- motion estimation
- security requirements
- data hiding
- error correction
- image processing
- least significant bit
- discrete wavelet transform
- user authentication
- image watermarking
- digital signature
- authentication protocol
- encryption scheme
- secret key
- gaussian noise
- human visual system