On the use of flat-fields for tomographic reconstruction
Seeking for quantitative tomographic images, it is of utmost importance to limit reconstruction artifacts. Detector imperfections, inhomogeneity of the incident beam, as classically observed in synchrotron beamlines, and their variations in time are a major cause of reconstruction bias such as `ring artifacts'. The present study aims at proposing a faithful estimate of the incident beam local intensity for each acquired projection during a scan, without revisiting the process of data acquisition itself. Actual flat-fields (acquired without specimen in the beam) and sinogram borders (when the specimen is present), which are not masked during the scan, are exploited to construct a suited instantaneous detector-wide flat-field. The proposed treatment is fast and simple. Its performance is assessed on a real scan acquired at ESRF ID19 beamline. Different criteria are used including residuals, i.e. difference between projections of reconstruction and actual projections. All confirm the benefit of the proposed procedure.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2017 |
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| Erschienen: |
2017 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:24 |
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| Enthalten in: |
Journal of synchrotron radiation - 24(2017), Pt 1 vom: 01. Jan., Seite 220-231 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Jailin, Clément [VerfasserIn] |
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| Links: |
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| Themen: |
Artifact corrections |
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| Anmerkungen: |
Date Completed 11.07.2017 Date Revised 13.07.2017 published: Print-Electronic Citation Status PubMed-not-MEDLINE |
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| doi: |
10.1107/S1600577516015812 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM267420897 |
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| 100 | 1 | |a Jailin, Clément |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a On the use of flat-fields for tomographic reconstruction |
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| 500 | |a Date Completed 11.07.2017 | ||
| 500 | |a Date Revised 13.07.2017 | ||
| 500 | |a published: Print-Electronic | ||
| 500 | |a Citation Status PubMed-not-MEDLINE | ||
| 520 | |a Seeking for quantitative tomographic images, it is of utmost importance to limit reconstruction artifacts. Detector imperfections, inhomogeneity of the incident beam, as classically observed in synchrotron beamlines, and their variations in time are a major cause of reconstruction bias such as `ring artifacts'. The present study aims at proposing a faithful estimate of the incident beam local intensity for each acquired projection during a scan, without revisiting the process of data acquisition itself. Actual flat-fields (acquired without specimen in the beam) and sinogram borders (when the specimen is present), which are not masked during the scan, are exploited to construct a suited instantaneous detector-wide flat-field. The proposed treatment is fast and simple. Its performance is assessed on a real scan acquired at ESRF ID19 beamline. Different criteria are used including residuals, i.e. difference between projections of reconstruction and actual projections. All confirm the benefit of the proposed procedure | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Research Support, Non-U.S. Gov't | |
| 650 | 4 | |a artifact corrections | |
| 650 | 4 | |a computed tomography | |
| 650 | 4 | |a flat-field normalization | |
| 700 | 1 | |a Buffière, Jean Yves |e verfasserin |4 aut | |
| 700 | 1 | |a Hild, François |e verfasserin |4 aut | |
| 700 | 1 | |a Poncelet, Martin |e verfasserin |4 aut | |
| 700 | 1 | |a Roux, Stéphane |e verfasserin |4 aut | |
| 773 | 0 | 8 | |i Enthalten in |t Journal of synchrotron radiation |d 1994 |g 24(2017), Pt 1 vom: 01. Jan., Seite 220-231 |w (DE-627)NLM09824129X |x 1600-5775 |7 nnns |
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