MULTI-STAGE OMP sparse coding using local matching pursuit atoms selection.
Mahdi MarsousiKaveh AbhariPaul S. BabynJavad AlirezaiePublished in: ICASSP (2013)
Keyphrases
- multistage
- sparse coding
- matching pursuit
- linear combination
- basis functions
- dictionary learning
- natural images
- sparse representation
- image coding
- image classification
- discriminative power
- unsupervised learning
- dynamic programming
- generative model
- image representation
- image patches
- sparse approximation
- small number
- multiscale
- feature space
- pattern recognition
- state space
- action recognition
- visual words
- road signs
- image processing
- neural network