On τ matrix-based approximate inverse preconditioning technique for diagonal-plus-Toeplitz linear systems from spatial fractional diffusion equations.
Min-Li ZengJun-Feng YangGuo-Feng ZhangPublished in: J. Comput. Appl. Math. (2022)
Keyphrases
- linear systems
- coefficient matrix
- diffusion equation
- symmetric positive definite
- sufficient conditions
- dynamical systems
- anisotropic diffusion
- covariance matrix
- scale space
- linear equations
- partial differential equations
- least squares
- sparse linear systems
- boundary conditions
- numerical solution
- interior point methods
- structure tensor
- noise removal
- positive definite
- diffusion process
- image enhancement
- nonlinear diffusion
- edge detection
- computer vision