Multiscale dictionary learning for hierarchical sparse representation.
Yangmei ShenHongkai XiongWenrui DaiPublished in: ICME (2017)
Keyphrases
- dictionary learning
- sparse representation
- multiscale
- image representation
- sparse coding
- image super resolution
- face recognition
- image classification
- group sparsity
- compressive sensing
- compressed sensing
- reconstruction error
- high dimensional data
- scale space
- dimensionality reduction
- image patches
- sparse codes
- natural images
- signal processing
- image processing
- random projections
- test images
- single image super resolution
- negative matrix factorization
- bag of words
- image segmentation
- neural network
- pattern recognition
- sparsity constraints