Spectrally equivalent preconditioners for mixed hybrid discretizations of diffusion equations on distorted meshes.
Yuri A. KuznetsovPublished in: J. Num. Math. (2003)
Keyphrases
- diffusion equation
- anisotropic diffusion
- edge preserving
- scale space
- partial differential equations
- multiresolution
- diffusion process
- noise removal
- pattern formation
- image enhancement
- boundary conditions
- image restoration
- linear systems
- scale spaces
- nonlinear diffusion
- image denoising
- higher order
- color images
- pattern recognition
- finite difference
- multiscale