A mathematical theory of resolution limits for super-resolution of positive sources

P Liu, Y He, H Ammari - arXiv preprint arXiv:2211.13541, 2022 - arxiv.org
A priori information on the positivity of source intensities is ubiquitous in imaging fields and
is also important for a multitude of super-resolution and deconvolution algorithms. However …

A mathematical theory of super-resolution and diffraction limit

P Liu, H Ammari - arXiv preprint arXiv:2211.15208, 2022 - arxiv.org
This paper is devoted to elucidating the essence of super-resolution and deals mainly with
the stability of super-resolution and the diffraction limit with respect to the signal-to-noise …

An operator theory for analyzing the resolution of multi-illumination imaging modalities

P Liu, H Ammari - SIAM Journal on Imaging Sciences, 2023 - SIAM
By introducing a new operator theory, we provide a unified mathematical theory for general
source resolution in the multi-illumination imaging problem. Our main idea is to transform …

Super-resolution of positive near-colliding point sources

P Liu, H Ammari - Information and Inference: A Journal of the …, 2023 - academic.oup.com
In this paper, we analyze the capacity of super-resolution (SR) of one-dimensional positive
sources. In particular, we consider a similar setting as in Batenkov et al.(2020, Inf. Inference …

A mathematical theory of super-resolution and two-point resolution

P Liu, H Ammari - Forum of Mathematics, Sigma, 2024 - cambridge.org
This paper focuses on the fundamental aspects of super-resolution, particularly addressing
the stability of super-resolution and the estimation of two-point resolution. Our first major …

A Fourier Approach to the Parameter Estimation Problem for One-dimensional Gaussian Mixture Models

X Liu, H Zhang - arXiv preprint arXiv:2404.12613, 2024 - arxiv.org
The purpose of this paper is twofold. First, we propose a novel algorithm for estimating
parameters in one-dimensional Gaussian mixture models (GMMs). The algorithm takes …

[HTML][HTML] Dynamic super-resolution in particle tracking problems

P Liu, H Ammari - Applied and Computational Harmonic Analysis, 2023 - Elsevier
Particle tracking in a live cell environment is concerned with reconstructing the trajectories,
locations, or velocities of the targeting particles, which holds the promise of revealing …

[HTML][HTML] Mathematical Foundation of Sparsity-based Multi-snapshot Spectral Estimation

P Liu, S Yu, O Sabet, L Pelkmans, H Ammari - Applied and Computational …, 2024 - Elsevier
In this paper, we study the spectral estimation problem of estimating the locations of a fixed
number of point sources given multiple snapshots of Fourier measurements in a bounded …