A generalized optimal fourth-order finite difference scheme for a 2D Helmholtz equation with the perfectly matched layer boundary condition.
Hatef DastourWenyuan LiaoPublished in: J. Comput. Appl. Math. (2021)
Keyphrases
- finite difference
- fourth order
- partial differential equations
- boundary conditions
- diffusion equation
- hamilton jacobi
- nonlinear diffusion
- numerical solution
- anisotropic diffusion
- noise removal
- finite element
- image processing
- high order
- level set
- image denoising
- numerical methods
- differential equations
- image enhancement
- scale spaces
- numerical analysis
- shape from shading
- estimation error
- denoising
- edge preserving
- curve evolution
- image interpolation
- multiscale
- level set method
- energy functional
- image restoration
- scale space
- higher order
- image analysis