Investigations on photothermal super resolution reconstruction using 2D-structured illumination patterns
- Active thermography as a nondestructive testing modality suffers greatly from the limitations imposed by the diffusive nature of heat conduction in solids. As a rule of thumb, the detection and resolution of internal defects/inhomogeneities is limited to a defect depth to defect size ratio greater than or equal to one. Earlier, we demonstrated that this classical limit can be overcome for 1D and 2D defect geometries by using photothermal laser-scanning super resolution. In this work we report a new experimental approach using 2D spatially structured illumination patterns in conjunction with compressed sensing and computational imaging methods to significantly decrease the experimental complexity and make the method viable for investigating larger regions of interest.
Autor*innen: | Julien LecompagnonORCiD |
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Weitere Person: | Samim AhmadiORCiD, Philipp Daniel HirschORCiD, C. Rupprecht, Mathias ZieglerORCiD |
Dokumenttyp: | Vortrag |
Veröffentlichungsform: | Präsentation |
Sprache: | Deutsch |
Jahr der Erstveröffentlichung: | 2021 |
Organisationseinheit der BAM: | 8 Zerstörungsfreie Prüfung |
8 Zerstörungsfreie Prüfung / 8.3 Thermografische Verfahren | |
DDC-Klassifikation: | Naturwissenschaften und Mathematik / Chemie / Analytische Chemie |
Freie Schlagwörter: | Image resolution; Inspection; NDT; Super resolution; Thermography |
Themenfelder/Aktivitätsfelder der BAM: | Chemie und Prozesstechnik |
Veranstaltung: | Future Sensing Technologies Conference 2021 |
Veranstaltungsort: | Online meeting |
Beginndatum der Veranstaltung: | 15.11.2021 |
Enddatum der Veranstaltung: | 19.11.2021 |
URL: | https://www.spiedigitallibrary.org/conference-proceedings-of-spie/11914/2603838/Investigations-on-photothermal-super-resolution-reconstruction-using-2D-structured-illumination/10.1117/12.2603838.full |
Verfügbarkeit des Dokuments: | Datei im Netzwerk der BAM verfügbar ("Closed Access") |
Datum der Freischaltung: | 17.11.2021 |
Referierte Publikation: | Nein |
Eingeladener Vortrag: | Nein |