Sparse representation of guided wave signals with differential norm penalty.
Xu ChenZhousuo ZhangXiang LiWenzhan YangPublished in: Knowl. Based Syst. (2024)
Keyphrases
- sparse representation
- signal processing
- regularized least squares
- norm minimization
- dictionary learning
- sparse coding
- sparse learning
- objective function
- blind source separation
- image classification
- face recognition
- compressive sensing
- joint optimization
- piecewise smooth
- image patches
- compressed sensing
- random projections
- sparse signal representation
- dimensionality reduction
- reconstruction error
- sparse approximations
- high dimensional data
- negative matrix factorization
- image reconstruction
- pattern recognition
- sparse codes
- higher order
- natural images
- image representation
- high dimensional
- data sets