Non-Hermitian perturbations of Hermitian matrix-sequences and applications to the spectral analysis of the numerical approximation of partial differential equations.
Giovanni BarbarinoStefano Serra CapizzanoPublished in: Numer. Linear Algebra Appl. (2020)
Keyphrases
- partial differential equations
- spectral analysis
- solving partial differential equations
- singular values
- numerical methods
- finite difference
- anisotropic diffusion
- singular value decomposition
- image denoising
- numerical algorithms
- numerical solution
- finite difference method
- level set
- spectral methods
- image processing
- numerical scheme
- fourth order
- multiscale
- image enhancement
- differential equations
- low rank
- energy functional
- matrix decomposition
- laplacian matrix
- autoregressive
- graph laplacian
- difference equations
- hidden markov models
- filter bank
- high order
- lie group
- nonlinear diffusion
- image quality
- maximum entropy
- diffusion equation