arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2003.05590math.DG
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曲线空间上的内禀黎曼度量:理论与计算

Intrinsic Riemannian metrics on spaces of curves: theory and computation

Martin Bauer, Nicolas Charon, Eric Klassen, Alice Le Brigant

摘要:

本章回顾了一些过去和最近的发展,形状比较和分析的曲线的基础上计算的内在黎曼度量的空间曲线模保形变换。我们总结了一般的建设和理论性质的商弹性度量欧几里德以及非欧几里德曲线之前,考虑特殊情况下的平方根速度度量的表达所产生的距离简化通过一个特定的变换。然后,我们研究了不同的数值方法,已被提出来估计这样的距离在实践中,特别是商曲线重新参数化所产生的最小化问题。

英文摘要:

This chapter reviews some past and recent developments in shape comparison and analysis of curves based on the computation of intrinsic Riemannian metrics on the space of curves modulo shape-preserving transformations. We summarize the general construction and theoretical properties of quotient elastic metrics for Euclidean as well as non-Euclidean curves before considering the special case of the square root velocity metric for which the expression of the resulting distance simplifies through a particular transformation. We then examine different numerical approaches that have been proposed to estimate such distances in practice and in particular to quotient out curve reparametrization in the resulting minimization problems.

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