Spectral analysis and structure preserving preconditioners for fractional diffusion equations.
Marco DonatelliMariarosa MazzaStefano Serra CapizzanoPublished in: J. Comput. Phys. (2016)
Keyphrases
- spectral analysis
- structure preserving
- diffusion equation
- anisotropic diffusion
- edge preserving
- scale space
- partial differential equations
- diffusion process
- noise removal
- image enhancement
- nonlinear diffusion
- boundary conditions
- image restoration
- edge detection
- filtering method
- dimensionality reduction
- speech signal
- edge map
- hidden markov models
- multiscale
- feature extraction
- computationally efficient