Matrix-free multigrid block-preconditioners for higher order discontinuous Galerkin discretisations.
Peter BastianEike Hermann MüllerSteffen MüthingMarian PiatkowskiPublished in: J. Comput. Phys. (2019)
Keyphrases
- higher order
- partial differential equations
- coefficient matrix
- linear systems
- high order
- lower order
- block wise
- row column
- natural images
- image analysis
- markov random field
- multiscale
- low order
- differential equations
- image restoration
- computationally expensive
- iterative methods
- multiresolution
- lambda calculus
- flow field
- image denoising
- level set
- pairwise
- boundary conditions
- edge preserving
- numerical methods
- optical flow computation
- image processing
- anisotropic diffusion
- low rank
- neural network
- continuous functions
- singular value decomposition
- conditional random fields