Keyphrases
- watermarking algorithm
- image authentication
- jpeg compression
- watermarking scheme
- digital watermarking
- signal processing
- tamper detection
- copyright protection
- image watermarking
- wavelet domain
- spread spectrum
- lossy compression
- watermarking technique
- dct coefficients
- watermarking method
- semi fragile
- geometric distortions
- multiscale
- public key