$\DeclareMathOperator{\arccosh}{arccosh} \DeclareMathOperator*{\argmin}{arg\,min} \DeclareMathOperator{\Exp}{Exp} \newcommand{\geo}[2]{\gamma_{\overset{\frown}{#1,#2}}} \newcommand{\geoS}{\gamma} \newcommand{\geoD}[2]{\gamma_} \newcommand{\geoL}[2]{\gamma(#2; #1)} \newcommand{\gradM}{\nabla_{\M}} \newcommand{\gradMComp}[1]{\nabla_{\M,#1}} \newcommand{\Grid}{\mathcal G} \DeclareMathOperator{\Log}{Log} \newcommand{\M}{\mathcal M} \newcommand{\N}{\mathcal N} \newcommand{\mat}[1]{\mathbf{#1}} \DeclareMathOperator{\prox}{prox} \newcommand{\PT}[3]{\mathrm{PT}_{#1\to#2}#3} \newcommand{\R}{\mathbb R} \newcommand{\SPD}[1]{\mathcal{P}(#1)} \DeclareMathOperator{\Tr}{Tr} \newcommand{\tT}{\mathrm{T}} \newcommand{\vect}[1]{\mathbf{#1}}$

# Moin.

I am researcher in the area of manifold-valued image processing, optimization on Riemannian manifolds, and multivariate Fourier analysis and I am currently with the Arbeitsgruppe Numerik partieller Differentialgleichungen at Technische Universität Chemnitz.

## News

April 20, 2018Johannes Persch defended his thesis

Our PhD student Johannes Persch within the DFG project BE5888/2-1 defended his thesis entitled Optimization Methods in Manifold-Valued Image Processing today. Congratulations!

April 3, 2018New Position in Chemnitz

Since beginning of April I am member of the Arbeitsgruppe Numerik partieller Differentialgleichungen at Technische Universität Chemnitz.

March 16, 2018Release of a new MVIRT version

A new version of MVIRT is now available. It focuses now on using functionals and is hence more flexible. The new documentation also includes tutorials to get started!

December 31, 2017Launch of ronnybergmann.net

Today I launched this site to have all my research and reports as well as blog posts on research on one site.

## Upcoming Conferences

I will be at the following upcoming conferences.

International Symposium on Mathematical Programming 2018 (ISMP 2018),
July 1—6, 2018, Bordeaux, France.
Mecklenburg Workshop — Approximation Methods and Fast Algorithms,
September 10—14, 2018, Hasenwinkel.
Chemnitz Finite Element Symposium 2018 (CFEM18),
September 24—26, 2018, Chemnitz.
Chemnitz Symposium on Inverse Problems 2018 (CSIP18),
September 27—28, 2018, Chemnitz.