Convergence analysis of the anisotropic FEM for 2D time fractional variable coefficient diffusion equations on graded meshes.
Yabing WeiShujuan LüHu ChenYanmin ZhaoFenling WangPublished in: Appl. Math. Lett. (2021)
Keyphrases
- diffusion equation
- convergence analysis
- boundary conditions
- anisotropic diffusion
- scale space
- diffusion process
- partial differential equations
- noise removal
- global convergence
- image enhancement
- optimality conditions
- finite element
- filtering method
- scale spaces
- convergence rate
- edge detection
- finite difference
- nonlinear diffusion
- multiresolution
- approximation methods
- image processing
- image features
- image analysis
- nonlinear programming
- computer vision
- global optimum
- structure tensor
- higher order