Peak detection for MALDI mass spectrometry imaging data using sparse frame multipliers

F Lieb, T Boskamp, HG Stark - Journal of proteomics, 2020 - Elsevier
MALDI mass spectrometry imaging (MALDI MSI) is a spatially resolved analytical tool for
biological tissue analysis by measuring mass-to-charge ratios of ionized molecules. With …

[HTML][HTML] Uncertainty principles and optimally sparse wavelet transforms

R Levie, N Sochen - Applied and Computational Harmonic Analysis, 2020 - Elsevier
In this paper we introduce a new localization framework for wavelet transforms, such as the
1D wavelet transform and the Shearlet transform. Our goal is to design nonadaptive window …

Randomized signal processing with continuous frames

R Levie, H Avron - Journal of Fourier Analysis and Applications, 2022 - Springer
This paper focuses on signal processing tasks in which the signal is transformed from the
signal space to a higher dimensional coefficient space (also called phase space) using a …

Wavelet design with optimally localized ambiguity function: A variational approach

R Levie, EK Avraham, N Sochen - arXiv preprint arXiv:2104.01654, 2021 - arxiv.org
In this paper, we design mother wavelets for the 1D continuous wavelet transform with some
optimality properties. An optimal mother wavelet here is one that has an ambiguity function …

Multiband imaging and characteristic spectrum extraction of optical fiber intrusion signal

Y Zhang, D Yang, Q Tian, H Qu - Optical Fiber Technology, 2017 - Elsevier
This paper proposes a multiband imaging method for optical fiber intrusion signals to realize
the multi-dimensional analysis and the characteristic spectrum extraction. Firstly, the time …

Existence of uncertainty minimizers for the continuous wavelet transform

S Halvdansson, JF Olsen, N Sochen… - Mathematische …, 2023 - Wiley Online Library
Continuous wavelet design is the endeavor to construct mother wavelets with desirable
properties for the continuous wavelet transform (CWT). One class of methods for choosing a …

[PDF][PDF] EXISTENCE AND APPROXIMATIONS OF OPTIMAL WAVELETS

S HALVDANSSON - lup.lub.lu.se
In this thesis we consider two notions of mother wavelet uncertainty for the one-dimensional
wavelet transform based on a new localization framework recently introduced by Levie and …

Audio Inpainting Using M-Frames

F Lieb - Current Trends in Analysis and Its Applications …, 2015 - Springer
Classical short-time Fourier constructions lead to a signal decomposition with a fixed time-
frequency resolution. However, having signals with varying features, such time-frequency …

A Wavelet Plancherel Theory with Application to Multipliers and Sparse Approximations

R Levie, N Sochen - Numerical Functional Analysis and …, 2022 - Taylor & Francis
We introduce an extension of continuous wavelet theory that enables an efficient
implementation of multiplicative operators in the coefficient space. In the new theory, the …

[引用][C] Stochastic phase space signal processing with application to localizing phase vocoder

R Levie, H Avron - arXiv preprint arXiv:1808.08810, 2018