Quaternion block sparse representation for signal recovery and classification.
Cuiming ZouKit Ian KouYulong WangYuan Yan TangPublished in: Signal Process. (2021)
Keyphrases
- sparse representation
- dictionary learning
- signal recovery
- image classification
- compressed sensing
- sparse coding
- orthogonal matching pursuit
- compressive sensing
- pattern recognition
- face recognition
- feature selection
- random projections
- feature extraction
- machine learning
- image representation
- feature vectors
- dimensionality reduction
- text classification
- bag of words
- supervised learning
- support vector
- model selection
- high dimensional data
- signal processing
- image reconstruction
- test images
- singular value decomposition
- feature space