A nearly optimal explicitly-sparse representation for oscillatory kernels with curvelet-like functions.
Yanchuang CaoJun LiuDawei ChenPublished in: CoRR (2023)
Keyphrases
- sparse representation
- joint optimization
- dictionary learning
- sparse coding
- image classification
- compressive sensing
- compressed sensing
- face recognition
- image patches
- signal processing
- random projections
- sparse reconstruction
- negative matrix factorization
- reconstruction error
- piecewise smooth
- sparse approximations
- dimensionality reduction
- machine learning
- test images
- high dimensional data
- kernel function
- sparse coefficients
- sparse codes
- regularized least squares
- sparsity constraints
- data mining
- kernel methods
- sparse learning
- norm minimization
- feature space
- denoising
- image representation
- basis functions