Coupling p-multigrid to geometric multigrid for discontinuous Galerkin formulations of the convection-diffusion equation.
Brendan S. MascarenhasBrian T. HelenbrookHarold L. AtkinsPublished in: J. Comput. Phys. (2010)
Keyphrases
- diffusion equation
- partial differential equations
- anisotropic diffusion
- boundary conditions
- image denoising
- image processing
- image enhancement
- finite difference
- level set
- differential equations
- scale space
- high order
- multiscale
- nonlinear diffusion
- diffusion processes
- scale spaces
- piecewise smooth
- diffusion process
- diffusion coefficient
- numerical methods
- noise removal
- energy functional
- denoising
- geometric structure
- computer vision
- image segmentation
- edge detection
- natural images
- diffusion tensor
- object recognition
- image analysis