A robust watermarking algorithm based on QR factorization and DCT using quantization index modulation technique.
Chen-Hong YuanYue-Sheng ZhuPublished in: J. Zhejiang Univ. Sci. C (2012)
Keyphrases
- watermarking algorithm
- watermarking technique
- watermark detection
- image watermarking
- dct coefficients
- jpeg compression
- geometric distortions
- watermarking method
- wavelet domain
- copyright protection
- singular value decomposition
- watermarking scheme
- spread spectrum
- spatial domain
- watermark extraction
- signal processing
- digital watermarking
- digital images
- dct domain
- compressed domain
- data hiding
- discrete cosine transform
- error correction
- watermarked image
- image compression
- lossy compression
- image authentication
- computational complexity
- pattern recognition
- transform domain