Sparse Representation and Collaborative Representation? Both Help Image Classification.
Wen-Yang XieBao-Di LiuShuai ShaoYe LiYanjiang WangPublished in: IEEE Access (2019)
Keyphrases
- sparse representation
- image classification
- image representation
- dictionary learning
- sparse coding
- feature representation
- sparsity constraints
- image features
- compressive sensing
- bag of words
- sparse codes
- reconstruction error
- regularized least squares
- object tracking
- random projections
- feature extraction
- compressed sensing
- test images
- negative matrix factorization
- joint optimization
- image patches
- face recognition
- norm minimization
- dimensionality reduction
- feature vectors
- data mining
- sparse reconstruction
- database
- sparse approximations
- piecewise smooth
- signal processing
- small number
- high dimensional
- multiscale
- neural network