A fourth-order optimal finite difference scheme for the Helmholtz equation with PML.
Hatef DastourWenyuan LiaoPublished in: Comput. Math. Appl. (2019)
Keyphrases
- finite difference
- fourth order
- partial differential equations
- semi implicit
- nonlinear diffusion
- numerical scheme
- anisotropic diffusion
- hamilton jacobi
- numerical solution
- noise removal
- diffusion equation
- level set
- finite element
- image denoising
- image enhancement
- image interpolation
- image processing
- estimation error
- numerical methods
- multiscale
- energy functional
- high order
- numerical analysis
- differential equations
- curve evolution
- denoising
- noise reduction
- multiresolution
- pattern recognition
- level set method
- higher order
- sufficient conditions
- boundary conditions
- computer vision
- wavelet domain
- active contours