Optimal blind watermarking for color images based on the U matrix of quaternion singular value decomposition.
Feng LiuLonghua MaCong LiuZhe-Ming LuPublished in: Multim. Tools Appl. (2018)
Keyphrases
- covariance matrix
- singular value decomposition
- principal component analysis
- correlation matrix
- color images
- singular values
- blind watermarking
- dimension reduction
- low rank
- dimensionality reduction
- least squares
- singular vectors
- reconstruction error
- machine learning
- measurement matrix
- latent semantic indexing
- data matrix
- null space
- image processing
- neural network
- pattern recognition
- factorization method
- low rank approximation
- scatter matrices
- kernel methods
- qr decomposition
- image quality