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Fast and noise-tolerant determination of the center of rotation in tomography
High-quality tomographic reconstruction is not possible without the accurate localization of the center of rotation. Poor localization leads to artifacts in the data and can even cause reconstructions to fail. There are many approaches to solving this problem, some of which involve the collection of...
Autores principales: | , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
International Union of Crystallography
2022
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8900868/ https://www.ncbi.nlm.nih.gov/pubmed/35254313 http://dx.doi.org/10.1107/S1600577521012777 |
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author | Vacek, Everett Jacobsen, Chris |
author_facet | Vacek, Everett Jacobsen, Chris |
author_sort | Vacek, Everett |
collection | PubMed |
description | High-quality tomographic reconstruction is not possible without the accurate localization of the center of rotation. Poor localization leads to artifacts in the data and can even cause reconstructions to fail. There are many approaches to solving this problem, some of which involve the collection of full sinograms, or even provisional tomographic reconstructions, in order to determine the center of rotation. Here, a simple method based on the expected symmetry of the Fourier transform of summed projections approximately 180° apart is presented; unlike cross-correlation methods, it requires only a single Fourier transform to compute, and uses mainly low spatial frequency information which is less susceptible to noise. This approach is shown to be fast, and robust against poor signal-to-noise as well as to projection images acquired at angles that are not exactly 180° apart. This rapid method can be useful as a first step in the processing of tomographic data. |
format | Online Article Text |
id | pubmed-8900868 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | International Union of Crystallography |
record_format | MEDLINE/PubMed |
spelling | pubmed-89008682022-03-29 Fast and noise-tolerant determination of the center of rotation in tomography Vacek, Everett Jacobsen, Chris J Synchrotron Radiat Research Papers High-quality tomographic reconstruction is not possible without the accurate localization of the center of rotation. Poor localization leads to artifacts in the data and can even cause reconstructions to fail. There are many approaches to solving this problem, some of which involve the collection of full sinograms, or even provisional tomographic reconstructions, in order to determine the center of rotation. Here, a simple method based on the expected symmetry of the Fourier transform of summed projections approximately 180° apart is presented; unlike cross-correlation methods, it requires only a single Fourier transform to compute, and uses mainly low spatial frequency information which is less susceptible to noise. This approach is shown to be fast, and robust against poor signal-to-noise as well as to projection images acquired at angles that are not exactly 180° apart. This rapid method can be useful as a first step in the processing of tomographic data. International Union of Crystallography 2022-01-19 /pmc/articles/PMC8900868/ /pubmed/35254313 http://dx.doi.org/10.1107/S1600577521012777 Text en © Vacek and Jacobsen 2022 https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution (CC-BY) Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited. |
spellingShingle | Research Papers Vacek, Everett Jacobsen, Chris Fast and noise-tolerant determination of the center of rotation in tomography |
title | Fast and noise-tolerant determination of the center of rotation in tomography |
title_full | Fast and noise-tolerant determination of the center of rotation in tomography |
title_fullStr | Fast and noise-tolerant determination of the center of rotation in tomography |
title_full_unstemmed | Fast and noise-tolerant determination of the center of rotation in tomography |
title_short | Fast and noise-tolerant determination of the center of rotation in tomography |
title_sort | fast and noise-tolerant determination of the center of rotation in tomography |
topic | Research Papers |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8900868/ https://www.ncbi.nlm.nih.gov/pubmed/35254313 http://dx.doi.org/10.1107/S1600577521012777 |
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