Approximating and preconditioning the stiffness matrix in the GoFD approximation of the fractional Laplacian.
Weizhang HuangJinye ShenPublished in: CoRR (2024)
Keyphrases
- laplacian matrix
- exact computation
- matrix representation
- spectral decomposition
- graph laplacian
- lagrange interpolation
- edge detection
- edge preserving
- multiscale
- laplacian operator
- lower order
- spectral clustering
- covariance matrix
- bundle adjustment
- finite element model
- inverse problems
- feedback loop
- approximation algorithms
- optical flow computation
- iterative methods
- conjugate gradient
- error bounds
- least squares
- special case
- objective function
- image processing