Solving ill-posed inverse problems using iterative deep neural networks

J Adler, O Öktem - Inverse Problems, 2017 - iopscience.iop.org
We propose a partially learned approach for the solution of ill-posed inverse problems with
not necessarily linear forward operators. The method builds on ideas from classical …

Artifacts and visible singularities in limited data X-ray tomography

ET Quinto - Sensing and Imaging, 2017 - Springer
We describe a principle to determine which features of an object will be easy to reconstruct
from limited X-ray CT data and which will be difficult. The principle depends on the geometry …

Template-based CT reconstruction with optimal transport and total generalized variation

Y Gao, Z **, X Li - Inverse Problems, 2023 - iopscience.iop.org
Abstract x-ray computed tomography (CT) has been widely used in clinical diagnosis as a
modality of medical imaging. To decrease the radiation dose patients suffering from, sparse …

Shape-based image reconstruction using linearized deformations

O Oektem, C Chen, NO Domanic, P Ravikumar… - Inverse …, 2017 - iopscience.iop.org
We introduce a reconstruction framework that can account for shape related prior
information in imaging-related inverse problems. It is a variational scheme that uses a shape …

An Innovative Low-dose CT Inpainting Algorithm based on Limited-angle Imaging Inpainting Model

Z Zhang, M Yang, H Li, S Chen… - Journal of X-Ray …, 2023 - content.iospress.com
Background: With the popularity of computed tomography (CT) technique, an increasing
number of patients are receiving CT scans. Simultaneously, the public's attention to CT …

[PDF][PDF] Inverse problems of integral invariants and shape signatures

T Fidler, M Grasmair, H Pottmann, O Scherzer - Preprint, 2007 - ricam.oeaw.ac.at
Recently, integral invariants and according signatures have been identified to be useful for
shape classification, which is an important research topic in computer vision, artificial …

Extraction and classification of the cultural relic model based on local geometric features

J Zhou, M Zhou, G Geng, X Wang - Journal of Advanced …, 2016 - jstage.jst.go.jp
This paper proposes a novel approach to extracting local geometric features of the cultural
relic. We first calculate Gaussian and mean curvature of the model. Then the surfaces of …

Nonasymptotic densities for shape reconstruction

S Ibrahim, K Sonnanburg, TJ Asaki… - Abstract and Applied …, 2014 - Wiley Online Library
In this work, we study the problem of reconstructing shapes from simple nonasymptotic
densities measured only along shape boundaries. The particular density we study is also …

Shape analysis for inverse problems

EO Bøe - 2021 - ntnuopen.ntnu.no
Denne oppgaven undersøker problemet med å invertere Radon-transformasjonen av en
form, hvor vi kun har tilgjengelig data fra et fåtall vinkler i et begrenset intervall. For å løse …

Data-inspired advances in geometric measure theory: generalized surface and shape metrics

S Ibrahim - arxiv preprint arxiv:1408.5954, 2014 - arxiv.org
Modern geometric measure theory, developed largely to solve the Plateau problem, has
generated a great deal of technical machinery which is unfortunately regarded as …