Sparse representation of classified patches for CS-MRI reconstruction.
Jianxin CaoShujun LiuHongqing LiuXiao-heng TanXichuan ZhouPublished in: Neurocomputing (2019)
Keyphrases
- sparse representation
- image patches
- learned dictionary
- compressed sensing
- reconstruction error
- compressive sensing
- sparse reconstruction
- dictionary learning
- sparse coding
- magnetic resonance imaging
- single image super resolution
- high resolution
- image classification
- signal processing
- image super resolution
- sparsity constraints
- magnetic resonance images
- random projections
- natural images
- joint optimization
- face recognition
- test images
- negative matrix factorization
- image representation
- sparse approximations
- regularized least squares
- image reconstruction
- three dimensional
- dimensionality reduction
- high dimensional data
- piecewise smooth
- higher order
- sparse codes
- data mining
- reconstructed image
- image processing
- bag of words
- missing data
- medical images
- feature vectors
- feature space