Image Restoration by Group Sparsity with Union of Hierarchical DirLOTs.
Kazuki SakashitaShogo MuramatsuPublished in: APSIPA (2020)
Keyphrases
- image restoration
- group sparsity
- structured sparsity
- edge preserving
- sparse coding
- total variation
- markov random field
- super resolution
- low rank
- image processing
- image deblurring
- regularization method
- regularization parameter
- sparse representation
- linear combination
- unsupervised learning
- natural images
- high resolution
- image patches
- prior knowledge
- regularization methods
- multiscale
- machine learning