Parallax in angular sensitive powder diffraction tomography
Fuente:
arXiv
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| Autori principali: | , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866909302129688576 |
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| author | Modregger, Peter Khaliq, Ahmar Wittwer, Felix |
| author_facet | Modregger, Peter Khaliq, Ahmar Wittwer, Felix |
| contents | While a few methods for the determination of depth-resolved strain distributions each with inherent limitations are available, tomographic reconstruction has been applied to this problem in only a limited sense. One of the challenges was the potential impact of geometric parallax, which constitutes a non-negligible lateral offset of diffraction information arising from different sample depths at the detector. Here, the effect of parallax was investigated and two main results have emerged. First, the impact of parallax was found to be additive to other offset contributions, which implies a straightforward correction. Second, for tomographic scans utilizing a full 360° rotation parallax has been found to have no impact on reconstructions of angular information. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_00157 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Parallax in angular sensitive powder diffraction tomography Modregger, Peter Khaliq, Ahmar Wittwer, Felix Image and Video Processing Materials Science Optics While a few methods for the determination of depth-resolved strain distributions each with inherent limitations are available, tomographic reconstruction has been applied to this problem in only a limited sense. One of the challenges was the potential impact of geometric parallax, which constitutes a non-negligible lateral offset of diffraction information arising from different sample depths at the detector. Here, the effect of parallax was investigated and two main results have emerged. First, the impact of parallax was found to be additive to other offset contributions, which implies a straightforward correction. Second, for tomographic scans utilizing a full 360° rotation parallax has been found to have no impact on reconstructions of angular information. |
| title | Parallax in angular sensitive powder diffraction tomography |
| topic | Image and Video Processing Materials Science Optics |
| url | https://arxiv.org/abs/2409.00157 |