Reversible watermark using difference expansion of quads.
Adnan M. AlattarPublished in: ICASSP (3) (2004)
Keyphrases
- reversible watermarking
- watermarking scheme
- digital images
- cellular automata
- watermarking algorithm
- human visual system
- digital watermarking
- image authentication
- copyright protection
- markov chain
- spatial domain
- watermarking method
- image watermarking
- video watermarking
- jpeg compression
- error correction
- spread spectrum
- image processing operations
- secret information
- multiscale