FAST EXPANSION INTO HARMONICS ON THE DISK: A STEERABLE BASIS WITH FAST RADIAL CONVOLUTIONS [0.03%]
基于快速径向卷积的可调节盘面调和函数基底
Nicholas F Marshall,Oscar Mickelin,Amit Singer
Nicholas F Marshall
We present a fast and numerically accurate method for expanding digitized L × L images representing functions on [-1, 1]2 supported on the disk x ∈ R 2 : | x |
CLAIRE: A DISTRIBUTED-MEMORY SOLVER FOR CONSTRAINED LARGE DEFORMATION DIFFEOMORPHIC IMAGE REGISTRATION [0.03%]
CLAIRE：一种用于约束大变形微分同胚图像配准的分布式内存求解器
Andreas Mang,Amir Gholami,Christos Davatzikos et al.
Andreas Mang et al.
With this work we release CLAIRE, a distributed-memory implementation of an effective solver for constrained large deformation diifeomorphic image registration problems in three dimensions. We consider an optimal control formulation. We inv...
Thomas A HÖft,Bradley K Alpert
Thomas A HÖft
We present a numerical method to efficiently and accurately re-compute the Coulomb potential of a large ensemble of charged particles after a subset of the particles undergoes a change of position. Errors are bounded even after a large numb...
Klaudius Scheufele,Shashank Subramanian,Andreas Mang et al.
Klaudius Scheufele et al.
We present a novel formulation for the calibration of a biophysical tumor growth model from a single-time snapshot, multiparametric magnetic resonance imaging (MRI) scan of a glioblastoma patient. Tumor growth models are typically nonlinear...
J A Mackenzie,M Nolan,C F Rowlatt et al.
J A Mackenzie et al.
We propose a novel adaptive moving mesh method for the numerical solution of a forced curve shortening geometric evolution equation. Control of the mesh quality is obtained using a tangential mesh velocity derived from a mesh equidistributi...
PARAMETER AND UNCERTAINTY ESTIMATION FOR DYNAMICAL SYSTEMS USING SURROGATE STOCHASTIC PROCESSES [0.03%]
基于代理随机过程的动力系统参数和不确定性估计方法研究
Matthias Chung,Mickaël Binois,Robert B Gramacy et al.
Matthias Chung et al.
Inference on unknown quantities in dynamical systems via observational data is essential for providing meaningful insight, furnishing accurate predictions, enabling robust control, and establishing appropriate designs for future experiments...
HIERARCHICAL ORTHOGONAL MATRIX GENERATION AND MATRIX-VECTOR MULTIPLICATIONS IN RIGID BODY SIMULATIONS [0.03%]
刚体模拟中的层次正交矩阵生成和矩阵向量乘法
Fuhui Fang,Jingfang Huang,Gary Huber et al.
Fuhui Fang et al.
In this paper, we apply the hierarchical modeling technique and study some numerical linear algebra problems arising from the Brownian dynamics simulations of biomolecular systems where molecules are modeled as ensembles of rigid bodies. Gi...
A SEMI-LAGRANGIAN TWO-LEVEL PRECONDITIONED NEWTON-KRYLOV SOLVER FOR CONSTRAINED DIFFEOMORPHIC IMAGE REGISTRATION [0.03%]
具有约束的图像配准问题的数值求解方法
Andreas Mang,George Biros
Andreas Mang
We propose an efficient numerical algorithm for the solution of diffeomorphic image registration problems. We use a variational formulation constrained by a partial differential equation (PDE), where the constraints are a scalar transport e...
A LAGRANGIAN GAUSS-NEWTON-KRYLOV SOLVER FOR MASS- AND INTENSITY-PRESERVING DIFFEOMORPHIC IMAGE REGISTRATION [0.03%]
一种保持质量和强度的保形图像配准拉格朗日 Gauss-Newton-Krylov 求解器
Andreas Mang,Lars Ruthotto
Andreas Mang
We present an efficient solver for diffeomorphic image registration problems in the framework of Large Deformations Diffeomorphic Metric Mappings (LDDMM). We use an optimal control formulation, in which the velocity field of a hyperbolic PD...
Dang-Manh Nguyen,Jörg Peters
Dang-Manh Nguyen
Convolving the output of Discontinuous Galerkin (DG) computations using spline filters can improve both smoothness and accuracy of the output. At domain boundaries, these filters have to be one-sided for non-periodic boundary conditions. Re...