A generalized optimal fourth-order finite difference scheme for a 2D Helmholtz equation with the perfectly matched layer boundary condition.
Hatef DastourWenyuan LiaoPublished in: CoRR (2019)
Keyphrases
- finite difference
- fourth order
- partial differential equations
- boundary conditions
- diffusion equation
- nonlinear diffusion
- numerical solution
- hamilton jacobi
- finite element
- anisotropic diffusion
- image denoising
- noise removal
- level set
- estimation error
- numerical analysis
- image processing
- shape from shading
- high order
- scale spaces
- differential equations
- numerical methods
- image enhancement
- sufficient conditions
- energy functional
- image interpolation
- object recognition
- multiscale
- computer vision
- curve evolution
- natural images