ℓ0DL: Joint Image Gradient ℓ0-norm With Dictionary Learning for Limited-angle CT.
Moran XuDianlin HuWeiwen WuPublished in: BCB (2019)
Keyphrases
- dictionary learning
- image gradient
- sparse representation
- regularized least squares
- sparse coding
- image reconstruction
- low contrast
- object boundaries
- input image
- optical flow
- image classification
- image structure
- image regions
- medical images
- natural images
- energy functional
- face recognition
- high dimensional data
- dimensionality reduction
- three dimensional
- image patches
- image representation
- multiscale
- deformable models
- feature space
- data sets