Replacing K-SVD with SGK: Dictionary training for sparse representation of images.
Sujit Kumar SahooAnamitra MakurPublished in: DSP (2015)
Keyphrases
- sparse representation
- test images
- image classification
- piecewise smooth
- dictionary learning
- sparse coding
- face recognition
- sparse reconstruction
- random projections
- image data
- reconstruction error
- image features
- low rank matrix recovery
- input image
- compressed sensing
- image patches
- image representation
- compressive sensing
- high dimensional data
- signal processing
- ground truth
- image retrieval
- sparse codes
- joint optimization
- small number
- bag of words
- image super resolution
- dimensionality reduction
- sparse approximations
- reconstructed image
- training set
- object recognition
- computer vision
- image regions
- feature extraction