Two-level preconditioning of discontinuous Galerkin approximations of second-order elliptic equations.
Veselin DobrevRaytcho D. LazarovPanayot S. VassilevskiLudmil T. ZikatanovPublished in: Numer. Linear Algebra Appl. (2006)
Keyphrases
- difference equations
- partial differential equations
- differential equations
- boundary value problem
- numerical methods
- inverse problems
- continuous functions
- numerical solution
- finite difference
- anisotropic diffusion
- image denoising
- edge preserving
- level set
- optical flow computation
- image processing
- image enhancement
- multiscale
- dynamical systems
- numerical integration
- iterative methods
- early vision
- high order
- higher order
- conjugate gradient
- hamilton jacobi
- primal dual
- differential operators
- bundle adjustment
- computer vision
- variational inequalities
- linear systems
- denoising
- finite element
- constrained optimization