Search Results for author: Raphaël Tinarrage

Found 4 papers, 4 papers with code

Train-Free Segmentation in MRI with Cubical Persistent Homology

1 code implementation2 Jan 2024 Anton François, Raphaël Tinarrage

We describe a new general method for segmentation in MRI scans using Topological Data Analysis (TDA), offering several advantages over traditional machine learning approaches.

Segmentation Topological Data Analysis

Computing persistent Stiefel-Whitney classes of line bundles

1 code implementation26 May 2020 Raphaël Tinarrage

When the dataset is a finite sample of a line bundle, we implement an effective algorithm to compute its persistent Stiefel-Whitney classes.

Algebraic Topology

Recovering the homology of immersed manifolds

1 code implementation6 Dec 2019 Raphaël Tinarrage

Given a sample of an abstract manifold immersed in some Euclidean space, we describe a way to recover the singular homology of the original manifold.

Computational Geometry Differential Geometry 55N31, 53C42, 53C20, 49Q15, 49Q22, 68U05

DTM-based Filtrations

2 code implementations12 Nov 2018 Hirokazu Anai, Frédéric Chazal, Marc Glisse, Yuichi Ike, Hiroya Inakoshi, Raphaël Tinarrage, Yuhei Umeda

Despite strong stability properties, the persistent homology of filtrations classically used in Topological Data Analysis, such as, e. g. the Cech or Vietoris-Rips filtrations, are very sensitive to the presence of outliers in the data from which they are computed.

Computational Geometry Algebraic Topology

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