Keyphrases
- watermarking scheme
- watermark extraction
- digital watermarking
- error correction
- spread spectrum
- copyright protection
- watermarking algorithm
- image authentication
- reversible watermarking
- jpeg compression
- image watermarking scheme
- geometric distortions
- video watermarking
- gray scale
- watermark embedding
- computational complexity
- watermarking technique
- robust watermarking scheme
- wavelet transform