Keyphrases
- sparse representation
- dictionary learning
- image patches
- image classification
- sar images
- feature vectors
- feature extraction
- sparse coding
- feature set
- feature space
- face recognition
- image features
- image representation
- pattern recognition
- synthetic aperture radar
- co occurrence
- random projections
- test images
- compressive sensing
- supervised learning
- feature selection
- visual features
- gray level
- natural images
- multiresolution
- training set
- multiscale
- decision trees
- machine learning
- data sets