MRI reconstruction via enhanced group sparsity and nonconvex regularization.
Shujun LiuJianxin CaoHongqing LiuXichuan ZhouKui ZhangZhengzhou LiPublished in: Neurocomputing (2018)
Keyphrases
- linear combination
- group sparsity
- sparse coding
- low rank
- structured sparsity
- dictionary learning
- high resolution
- compressive sensing
- image reconstruction
- convex optimization
- group lasso
- optimization problems
- convex optimization problems
- objective function
- learning problems
- random projections
- sparse representation
- semi supervised learning
- natural images
- signal processing
- interior point methods
- inverse problems