Dictionary Optimization for Block-Sparse Representations.
Lihi Zelnik-ManorKevin RosenblumYonina C. EldarPublished in: IEEE Trans. Signal Process. (2012)
Keyphrases
- sparse representation
- joint optimization
- dictionary learning
- sparse coding
- norm minimization
- image classification
- image representation
- regularized least squares
- compressive sensing
- face recognition
- orthogonal matching pursuit
- image patches
- sparse reconstruction
- random projections
- compressed sensing
- signal processing
- dimensionality reduction
- negative matrix factorization
- high dimensional data
- learned dictionary
- data sets
- image super resolution
- manifold learning
- test images
- multiscale
- computer vision