Invertible Spread-Spectrum Watermarking for Image Authentication and Multilevel Access to Precision-Critical Watermarked Images.
Josep Domingo-FerrerFrancesc SebéPublished in: ITCC (2002)
Keyphrases
- digital watermarking
- watermarking scheme
- watermarked image
- copyright protection
- digital images
- image watermarking
- jpeg compression
- watermark detection
- spread spectrum
- watermarking algorithm
- spatial domain
- discrete wavelet transform
- watermark embedding
- singular values
- communication systems
- error correction
- watermarking method