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Diffraction Enhanced Imaging Analysis with Pseudo-Voigt Fit Function
- Diffraction enhanced imaging (DEI) is an advanced digital radiographic imaging technique employing the refraction of X-rays to contrast internal interfaces. This study aims to qualitatively and quantitatively evaluate images acquired using this technique and to assess how different fitting functions to the typical rocking curves (RCs) influence the quality of the images. RCs are obtained for every image pixel. This allows the separate determination of the absorption and the refraction properties of the material in a position-sensitive manner. Comparison of various types of fitting functions reveals that the Pseudo-Voigt (PsdV) function is best suited to fit typical RCs. A robust algorithm was developed in the Python programming language, which reliably extracts the physically meaningful information from each pixel of the image. We demonstrate the potential of the algorithm with two specimens: a silicone gel specimen that has well-defined interfaces, and an additively manufactured polycarbonate specimen.
Author details: | Deepak ManiORCiD, Andreas KupschORCiD, Bernd R. MüllerORCiD, Giovanni BrunoORCiDGND |
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DOI: | https://doi.org/10.3390/jimaging8080206 |
ISSN: | 2313-433X |
Pubmed ID: | https://pubmed.ncbi.nlm.nih.gov/35893084 |
Title of parent work (English): | Journal of imaging : open access journal |
Publisher: | MDPI |
Place of publishing: | Basel |
Publication type: | Article |
Language: | English |
Date of first publication: | 2022/07/23 |
Publication year: | 2022 |
Release date: | 2024/03/06 |
Tag: | Pseudo-Voigt fit function; Python; X-ray refraction;; analyzer-based imaging; diffraction enhanced imaging; non-destructive evaluation |
Volume: | 8 |
Issue: | 8 |
Article number: | 206 |
Number of pages: | 13 |
Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie |
DDC classification: | 5 Naturwissenschaften und Mathematik / 52 Astronomie / 520 Astronomie und zugeordnete Wissenschaften |
5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik | |
Peer review: | Referiert |
Publishing method: | Open Access / Gold Open-Access |
DOAJ gelistet | |
License (German): | CC-BY - Namensnennung 4.0 International |