In greedy PURSUIT of new directions: (Nearly) Orthogonal Matching Pursuit by directional optimisation.
Thomas BlumensathMike E. DaviesPublished in: EUSIPCO (2007)
Keyphrases
- orthogonal matching pursuit
- sparse representation
- compressed sensing
- transform domain
- signal recovery
- sparse approximation
- feature selection
- greedy algorithm
- compressive sensing
- genetic algorithm
- sparse coding
- natural images
- image reconstruction
- linear combination
- spatial domain
- image classification
- regression model
- dynamic programming
- data sets
- face recognition
- feature extraction
- multiscale
- video sequences
- pattern recognition
- feature space
- worst case
- nearest neighbor
- dimensionality reduction