145
Voted
SIAMSC
2011
14 years 7 months ago
2011
We develop an algebraic multigrid (AMG) setup scheme based on the bootstrap framework for multiscale scientific computation. Our approach uses a weighted least squares definition...
131
Voted
MOC
2010
14 years 7 months ago
2010
We study H(div) preconditioning for the saddle-point systems that arise in a stochastic Galerkin mixed formulation of the steady-state diffusion problem with random data. The key i...
128
Voted
SIMPRA
2011
14 years 7 months ago
2011
In this paper we present a GPU-based multigrid approach for simulating elastic deformable objects in real time. Our method is based on a finite element discretization of the defo...
110
Voted
SIAMSC
2010
14 years 11 months ago
2010
Abstract. In this article, we present a parallel geometric multigrid algorithm for solving elliptic partial differential equations (PDEs) on octree based conforming finite elemen...
115
Voted
SIAMSC
2010
14 years 11 months ago
2010
Abstract. A smoothed aggregation multigrid method is presented for the numerical calculation of the stationary probability vector of an irreducible sparse Markov chain. It is shown...
109
click to vote
SIAMSC
2008
14 years 11 months ago
2008
In the mathematical modeling of real-life applications, systems of equations with complex coefficients often arise. While many techniques of numerical linear algebra, e.g., Krylovs...
153
Voted
TIP
1998
15 years 15 days ago
1998
Abstract—A multigrid anisotropic diffusion algorithm for image processing is presented. The multigrid implementation provides an efficient hierarchical relaxation method that fa...
135
Voted
SIAMSC
2008
15 years 23 days ago
2008
Abstract. We present a multigrid algorithm for the solution of distributed parameter inverse problems constrained by variable-coefficient linear parabolic partial differential equa...
110
Voted
AMC
2007
15 years 29 days ago
2007
The surface estimation problem is used as a model to demonstrate a framework for solving early vision problems by high-order regularization with natural boundary conditions. Becaus...
142
Voted
ICIP
1999
IEEE
15 years 5 months ago
1999
IEEE
Optical diffusion tomography attempts to reconstruct an object cross section from measurements of scattered and attenuated light. While Bayesian approaches are well suited to this...