On Preservation of Positivity in Some Finite Element Methods for the Heat Equation.
Panagiotis ChatzipantelidisZoltán HorváthVidar ThoméePublished in: Comput. Methods Appl. Math. (2015)
Keyphrases
- heat equation
- finite element methods
- scale spaces
- scale space
- partial differential equations
- numerical solution
- finite difference
- diffusion equation
- finite element model
- steady state
- diffusion process
- multiscale
- boundary conditions
- image smoothing
- gaussian kernel
- image denoising
- natural images
- level set
- image features
- numerical methods
- differential equations
- image enhancement
- experimental data
- higher order