Compressed sensing and best approximation from unions of subspaces: Beyond dictionaries.
Tomer PelegRémi GribonvalMike E. DaviesPublished in: EUSIPCO (2013)
Keyphrases
- compressed sensing
- sparse representation
- high dimensional data
- image reconstruction
- random projections
- orthogonal matching pursuit
- signal processing
- compressive sampling
- dimensionality reduction
- natural images
- feature space
- sparse coding
- high dimensional
- dimension reduction
- face recognition
- multiscale
- image patches
- original data
- high dimensionality
- active learning
- nearest neighbor
- compressive sensing
- fourier domain
- data analysis
- image classification
- principal component analysis