Image denoising using sparse representation classification and non-subsampled shearlet transform.
Hamid Reza ShahdoostiOmid KhayatPublished in: Signal Image Video Process. (2016)
Keyphrases
- image representation
- sparse representation
- image classification
- dictionary learning
- sparse coding
- compressed sensing
- multiscale
- bag of words
- compressive sensing
- image features
- pattern recognition
- sparse approximations
- machine learning
- sparse reconstruction
- training set
- translation invariant
- image patches
- wavelet domain
- random projections
- joint optimization
- feature extraction
- reconstruction error
- model selection
- sparse codes
- face recognition
- regularized least squares
- feature vectors
- total variation
- denoising
- higher order
- dimensionality reduction
- signal processing
- unsupervised learning
- image compression
- sparse representation based classification
- decision trees