Weighted Discriminative Sparse Representation for Image Classification.
Zhen LiuXiao-Jun WuZhenqiu ShuHefeng YinZhe ChenPublished in: Neural Process. Lett. (2021)
Keyphrases
- image classification
- sparse representation
- sparse codes
- sparse coding
- feature extraction
- dictionary learning
- class specific
- image representation
- discriminative power
- image patches
- image features
- reconstruction error
- visual words
- bag of words
- compressed sensing
- compressive sensing
- sparse approximations
- face recognition
- joint optimization
- random projections
- dimensionality reduction
- scene classification
- subspace learning
- piecewise smooth
- regularized least squares
- test images
- negative matrix factorization
- norm minimization
- unsupervised learning
- sparse reconstruction
- sparse coefficients