Theory of reduced biquaternion sparse representation and its applications.
Shan GaiPublished in: Expert Syst. Appl. (2023)
Keyphrases
- sparse representation
- dictionary learning
- sparse coding
- joint optimization
- face recognition
- random projections
- compressed sensing
- compressive sensing
- image classification
- object tracking
- test images
- sparse approximations
- sparse reconstruction
- regularized least squares
- image patches
- negative matrix factorization
- dimensionality reduction
- piecewise smooth
- reconstruction error
- high dimensional data
- image representation
- norm minimization
- signal processing
- sparsity constraints
- neural network
- sparse coefficients
- data sets
- feature extraction
- machine learning