Fast iterative solvers for an optimal transport problem
Fast iterative solvers for an optimal transport problem
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DOI:
10.1007/s10444-018-9625-5
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发表时间:
2018-01
影响因子:
1.7
通讯作者:
R. Herzog;J. Pearson;M. Stoll
中科院分区:
文献类型:
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作者:
R. Herzog;J. Pearson;M. Stoll
Optimal transport problems pose many challenges when considering their numerical treatment. We investigate the solution of a PDE-constrained optimisation problem subject to a particular transport equation arising from the modelling of image metamorphosis. We present the nonlinear optimisation problem, and discuss the discretisation and treatment of the nonlinearity via a Gauss–Newton scheme. We then derive preconditioners that can be used to solve the linear systems at the heart of the (Gauss–)Newton method.