4 papers
Hermite multiwavelets for manifold-valued data
Mariantonia Cotronei, Caroline Moosmüller, Tomas Sauer +1
In this paper we present a construction of interpolatory Hermite multiwavelets for functions that take values in nonlinear geometries such as Riemannian manifolds or Lie groups. We…
Phase Retrieval for via the Provably Accurate and Noise Robust Numerical Inversion of Spectrogram Measurements
Mark Iwen, Michael Perlmutter, Nada Sissouno +1
In this paper, we focus on the approximation of smooth functions , up to an unresolvable global phase ambiguity, from a finite set of Short Time…
Well conditioned ptychograpic imaging via lost subspace completion
Anton Forstner, Felix Krahmer, Oleh Melnyk +1
Ptychography, a special case of the phase retrieval problem, is a popular method in modern imaging. Its measurements are based on the shifts of a locally supported window function.…
Predicting sparse circle maps from their dynamics
Felix Krahmer, Christian Kühn, Nada Sissouno
The problem of identifying a dynamical system from its dynamics is of great importance for many applications. Recently it has been suggested to impose sparsity models for improved…