Preconditioners for Fractional Diffusion Equations Based on the Spectral Symbol.
Nikos BarakitisSven-Erik EkströmParis VassalosPublished in: CoRR (2019)
Keyphrases
- diffusion equation
- anisotropic diffusion
- edge preserving
- scale space
- diffusion process
- partial differential equations
- noise removal
- pattern formation
- image enhancement
- boundary conditions
- image restoration
- nonlinear diffusion
- scale spaces
- edge detection
- filtering method
- iterative methods
- edge map
- finite difference
- linear systems
- high order
- multiscale