Unified Dictionary Learning and Region Tagging with Hierarchical Sparse Representation.
Xiaochun CaoXingxing WeiYahong HanYi YangNicu SebeAlexander G. HauptmannPublished in: Comput. Vis. Image Underst. (2013)
Keyphrases
- dictionary learning
- sparse representation
- sparse coding
- image super resolution
- face recognition
- compressed sensing
- high dimensional data
- group sparsity
- image patches
- image classification
- signal processing
- compressive sensing
- reconstruction error
- sparse codes
- input image
- test images
- negative matrix factorization
- sparsity constraints
- image regions