Search Results for author: Kathlén Kohn

Found 12 papers, 1 papers with code

PLMP -- Point-Line Minimal Problems in Complete Multi-View Visibility

1 code implementation24 Mar 2019 Timothy Duff, Kathlén Kohn, Anton Leykin, Tomas Pajdla

We present a complete classification of all minimal problems for generic arrangements of points and lines completely observed by calibrated perspective cameras.

3D Reconstruction General Classification

Changing Views on Curves and Surfaces

no code implementations6 Jul 2017 Kathlén Kohn, Bernd Sturmfels, Matthew Trager

Visual events in computer vision are studied from the perspective of algebraic geometry.

Pure and Spurious Critical Points: a Geometric Study of Linear Networks

no code implementations ICLR 2020 Matthew Trager, Kathlén Kohn, Joan Bruna

The critical locus of the loss function of a neural network is determined by the geometry of the functional space and by the parameterization of this space by the network's weights.

PL${}_{1}$P -- Point-line Minimal Problems under Partial Visibility in Three Views

no code implementations10 Mar 2020 Timothy Duff, Kathlén Kohn, Anton Leykin, Tomas Pajdla

We present a complete classification of minimal problems for generic arrangements of points and lines in space observed partially by three calibrated perspective cameras when each line is incident to at most one point.

3D Reconstruction

PL₁P - Point-line Minimal Problems under Partial Visibility in Three Views

no code implementations ECCV 2020 Timothy Duff, Kathlén Kohn, Anton Leykin, Tomas Pajdla

We present a complete classification of minimal problems for generic arrangements of points and lines in space observed partially by three calibrated perspective cameras when each line is incident to at most one point.

3D Reconstruction

Toric invariant theory for maximum likelihood estimation in log-linear models

no code implementations14 Dec 2020 Carlos Améndola, Kathlén Kohn, Philipp Reichenbach, Anna Seigal

We establish connections between invariant theory and maximum likelihood estimation for discrete statistical models.

Statistics Theory Algebraic Geometry Statistics Theory 14L24, 14P05, 20G45, 62F10, 62H22, 62R01

The Maximum Likelihood Degree of Linear Spaces of Symmetric Matrices

no code implementations1 Dec 2020 Carlos Améndola, Lukas Gustafsson, Kathlén Kohn, Orlando Marigliano, Anna Seigal

We study multivariate Gaussian models that are described by linear conditions on the concentration matrix.

Algebraic Geometry Statistics Theory Statistics Theory 62R01, 14C17, 14Q15, 15A15

Geometry of Linear Convolutional Networks

no code implementations3 Aug 2021 Kathlén Kohn, Thomas Merkh, Guido Montúfar, Matthew Trager

We study the family of functions that are represented by a linear convolutional neural network (LCN).

Snapshot of Algebraic Vision

no code implementations20 Oct 2022 Joe Kileel, Kathlén Kohn

In this survey article, we present interactions between algebraic geometry and computer vision, which have recently come under the header of algebraic vision.

3D Scene Reconstruction

Function Space and Critical Points of Linear Convolutional Networks

no code implementations12 Apr 2023 Kathlén Kohn, Guido Montúfar, Vahid Shahverdi, Matthew Trager

We study the geometry of linear networks with one-dimensional convolutional layers.

Geometry of Linear Neural Networks: Equivariance and Invariance under Permutation Groups

no code implementations24 Sep 2023 Kathlén Kohn, Anna-Laura Sattelberger, Vahid Shahverdi

We prove that all invariant linear functions can be parameterized by a single linear autoencoder with a weight-sharing property imposed by the cycle decomposition of the considered permutation.

Order-One Rolling Shutter Cameras

no code implementations17 Mar 2024 Marvin Anas Hahn, Kathlén Kohn, Orlando Marigliano, Tomas Pajdla

We provide a unified theory for the important class of order-one rolling shutter (RS$_1$) cameras.

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