Sparsity reconstruction using nonconvex TGpV-shearlet regularization and constrained projection.
Tingting WuMichael K. NgXi-Le ZhaoPublished in: Appl. Math. Comput. (2021)
Keyphrases
- mixed norm
- discrete tomography
- tomographic reconstruction
- projection images
- projection operator
- image reconstruction
- image restoration and reconstruction
- sparsity constraints
- compressed sensing
- fan beam
- sparse approximation
- scaled orthographic
- basis pursuit
- sparse reconstruction
- inverse problems
- radon transform
- back projection
- objective function
- convex loss functions
- high dimensional
- sparse representation
- lagrange multipliers
- noise level
- convex optimization
- global optimization
- orthogonal matching pursuit
- reconstruction method
- x ray
- three dimensional
- group lasso
- geometrical properties
- reconstructed image
- limited angle
- linear combination
- dimensionality reduction
- compressive sensing