Keyphrases
- least significant bit
- data hiding
- digital images
- hidden information
- data embedding
- authentication scheme
- information hiding
- secret message
- cover image
- error correction
- reversible data hiding
- image authentication
- spatial domain
- structural information
- jpeg images
- secret data
- watermarking technique
- spread spectrum
- digital watermarking
- lossy compression
- image watermarking
- transform domain
- secret key
- smart card