Semantic superpixel extraction via a discriminative sparse representation.
Yurui XieChao HuangLinfeng XuPublished in: Multim. Tools Appl. (2014)
Keyphrases
- sparse representation
- sparse codes
- dictionary learning
- sparse coding
- discriminative power
- face recognition
- image classification
- joint optimization
- compressed sensing
- image patches
- reconstruction error
- random projections
- dimensionality reduction
- high dimensional data
- compressive sensing
- signal processing
- sparse coefficients
- sparse approximations
- negative matrix factorization
- feature extraction
- multiscale
- subspace learning
- image representation
- regularized least squares
- natural images
- information extraction
- semi supervised
- sparse reconstruction
- data sets
- nearest neighbor