On the Numerical Rank of the Off-Diagonal Blocks of Schur Complements of Discretized Elliptic PDEs.
Shiv ChandrasekaranPatrick M. DewildeMing GuN. SomasunderamPublished in: SIAM J. Matrix Anal. Appl. (2010)
Keyphrases
- partial differential equations
- numerical methods
- solving partial differential equations
- numerical algorithms
- finite difference
- level set
- numerical solution
- image denoising
- image processing
- anisotropic diffusion
- sensitivity analysis
- boundary value problem
- variable size
- energy functional
- block size
- image enhancement
- multiscale
- mathematical morphology
- covariance matrix
- numerical data
- numerical analysis
- fractal image coding