Diagonal Scalings of the Laplacian as Preconditioners for Other Elliptic Differential Operators.
Anne GreenbaumPublished in: SIAM J. Matrix Anal. Appl. (1992)
Keyphrases
- differential operators
- partial differential equations
- boundary value problem
- edge preserving
- vector field
- anisotropic diffusion
- multiscale
- multiple scales
- image restoration
- covariance matrix
- image denoising
- image processing
- zero crossing
- diffusion tensor
- feature detectors
- level set
- gaussian derivatives
- image enhancement
- higher order
- image segmentation