ECG steganography based on tunable Q-factor wavelet transform and singular value decomposition.
P. MathivananA. Balaji GaneshPublished in: Int. J. Imaging Syst. Technol. (2021)
Keyphrases
- singular value decomposition
- wavelet transform
- multiresolution
- multiscale
- subband
- singular values
- least squares
- wavelet coefficients
- wavelet domain
- dimension reduction
- feature extraction
- latent semantic indexing
- reconstruction error
- low rank
- principal component analysis
- image compression
- dimensionality reduction
- data matrix
- low rank approximation
- signal processing
- null space
- measurement matrix
- image processing
- low rank matrices