Genetic Algorithm Optimized Structured Dictionary for Discriminative Block Sparse Representation.
Nagendra KumarRohit SinhaPublished in: IEEE Access (2020)
Keyphrases
- sparse representation
- genetic algorithm
- sparse codes
- dictionary learning
- sparse coding
- image classification
- learned dictionary
- discriminative power
- compressive sensing
- negative matrix factorization
- face recognition
- image representation
- image patches
- sparse approximations
- joint optimization
- reconstruction error
- sparse reconstruction
- random projections
- compressed sensing
- feature extraction
- high dimensional data
- test images
- signal processing
- regularized least squares
- subspace learning
- semi supervised
- dimensionality reduction
- linear classifiers
- sparsity constraints
- neural network
- image retrieval
- motion estimation
- unsupervised learning
- higher order
- orthogonal matching pursuit
- sparse coefficients