Discriminative structured dictionary learning with hierarchical group sparsity.
Yong XuYuping SunYuhui QuanBo ZhengPublished in: Comput. Vis. Image Underst. (2015)
Keyphrases
- group sparsity
- dictionary learning
- sparse codes
- sparse coding
- discriminative dictionary
- sparse representation
- discriminative power
- unsupervised learning
- structured sparsity
- low rank
- image classification
- natural images
- image representation
- linear combination
- generative model
- active learning
- feature extraction
- machine learning
- bag of words
- image patches
- supervised learning
- semi supervised
- high dimensional
- reinforcement learning
- multiscale
- face recognition