Performing Stereo-Measurements with Optimal Patterns Processed by Localised Spectrum Analysis
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| Názov: | Performing Stereo-Measurements with Optimal Patterns Processed by Localised Spectrum Analysis |
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| Autori: | Jailin, Thomas, Blaysat, B., Vinel, A., Langlois, R., Sur, F., Grédiac, M. |
| Prispievatelia: | Langlois, Raphaël |
| Zdroj: | Experimental Mechanics. |
| Informácie o vydavateľovi: | Springer Science and Business Media LLC, 2025. |
| Rok vydania: | 2025 |
| Predmety: | [PHYS.PHYS.PHYS-OPTICS] Physics [physics]/Physics [physics]/Optics [physics.optics], [PHYS.PHYS.PHYS-INS-DET] Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], LSA, [PHYS.MECA.GEME] Physics [physics]/Mechanics [physics]/Mechanical engineering [physics.class-ph], Periodic pattern, Shape memory alloy, Stereo-vision |
| Popis: | Background: Localised Spectrum Analysis is a full-field measurement method which enables processing optimal patterns (i.e. checkerboard patterns) and obtaining high metrological performance. However, LSA was still limited to 2D cases.Objective: This paper presents stereo-LSA, an extension of the method for stereo image pairs, enabling the measurement of the 3D displacement field on sample surfaces engraved with optimal checkerboard patterns.Methods: A standard stereo procedure is followed. The LSA formulation is updated to take into account global rotations induced by the stereo angle.Results: The technique is applied to three different cases. A synthetic case is used to validate the stereo implementation, and a comparison is proposed with stereo digital image correlation, routinely used in the community.Conclusions: Stereo-LSA enables measuring 3D-displacement field on a sample surface prepared with checkerboard patterns, leading to high metrological performance. |
| Druh dokumentu: | Article |
| Popis súboru: | application/pdf |
| Jazyk: | English |
| ISSN: | 1741-2765 0014-4851 |
| DOI: | 10.1007/s11340-025-01217-7 |
| Prístupová URL adresa: | https://hal.science/hal-05308609v1 https://hal.science/hal-05308609v1/document https://doi.org/10.1007/s11340-025-01217-7 |
| Rights: | Springer Nature TDM CC BY |
| Prístupové číslo: | edsair.doi.dedup.....e9804bf78e85ad632a6b53d32fd56fc7 |
| Databáza: | OpenAIRE |
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Nájsť tento článok vo Web of Science | Abstrakt: | Background: Localised Spectrum Analysis is a full-field measurement method which enables processing optimal patterns (i.e. checkerboard patterns) and obtaining high metrological performance. However, LSA was still limited to 2D cases.Objective: This paper presents stereo-LSA, an extension of the method for stereo image pairs, enabling the measurement of the 3D displacement field on sample surfaces engraved with optimal checkerboard patterns.Methods: A standard stereo procedure is followed. The LSA formulation is updated to take into account global rotations induced by the stereo angle.Results: The technique is applied to three different cases. A synthetic case is used to validate the stereo implementation, and a comparison is proposed with stereo digital image correlation, routinely used in the community.Conclusions: Stereo-LSA enables measuring 3D-displacement field on a sample surface prepared with checkerboard patterns, leading to high metrological performance. |
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| ISSN: | 17412765 00144851 |
| DOI: | 10.1007/s11340-025-01217-7 |