Intelligent hybrid watermarking ancient-document wavelet packet decomposition-singular value decomposition-based schema.
Mohamed Neji MaatoukNajoua Essoukri Ben AmaraPublished in: IET Image Process. (2014)
Keyphrases
- singular value decomposition
- wavelet packet decomposition
- watermarking algorithm
- latent semantic analysis
- singular values
- image recognition
- wavelet packet
- latent semantic indexing
- frequency band
- least squares
- dimensionality reduction
- low rank
- retrieval systems
- subband
- document collections
- information retrieval systems
- information retrieval
- web documents
- principal component analysis
- watermarking scheme
- wavelet transformation
- signal processing
- copyright protection
- data points
- document clustering
- semantic information
- digital watermarking
- low rank approximation