Strengthening QIM-Based Watermarking by Non-uniform Discrete Cosine Transform.
Xianfeng ZhaoBingbing XiaYi DengPublished in: Information Hiding (2008)
Keyphrases
- discrete cosine transform
- information hiding
- jpeg images
- watermarking algorithm
- dct coefficients
- data hiding
- image compression
- jpeg compression
- transform domain
- spread spectrum
- filter bank
- dct domain
- image watermarking
- signal processing
- projection onto convex sets
- compressed images
- spatial domain
- copyright protection
- watermarking scheme
- error correction
- fast fourier transform
- watermark detection
- image blocks
- compression ratio
- frequency domain
- watermarking technique
- discrete fourier transform
- digital images
- pattern recognition
- image segmentation
- watermark embedding
- wavelet transform
- subband