Vector extension of quaternion wavelet transform and its application to colour image denoising.
Shan GaiZhongyun BaoKaige ZhangPublished in: IET Signal Process. (2019)
Keyphrases
- image denoising
- wavelet transform
- wavelet coefficients
- wavelet domain
- denoising
- undecimated wavelet transform
- noisy images
- multiresolution
- total variation
- natural images
- multiscale
- subband
- partial differential equations
- singularity detection
- high frequency
- wavelet domain hidden markov tree
- image compression
- wavelet shrinkage
- feature vectors
- discrete wavelet transform
- translation invariant
- image processing
- fourier transform
- contourlet transform
- low frequency
- shift invariant
- frequency domain
- feature extraction
- bilateral filtering
- wavelet analysis
- denoising algorithm
- wavelet packet transform
- nonlocal means
- directional filter banks
- augmented lagrangian
- denoising methods
- gaussian noise
- wavelet basis
- additive gaussian noise
- total variation regularization
- feature space