Improved regularised phase-tracking technique for the processing of squared-grating deflectograms
We propose a robust procedure based on the regularized phase-tracking (RPT) technique to demodulate squared-grating deflectograms. The use of squared gratings, already reported, lets us multiplex the information of the deflections in two orthogonal directions in a single image, thus avoiding the nec...
| Autores: | , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2000 |
| País: | España |
| Institución: | Universidad Complutense de Madrid (UCM) |
| Repositorio: | Docta Complutense |
| Idioma: | inglés |
| OAI Identifier: | oai:docta.ucm.es:20.500.14352/58791 |
| Acceso en línea: | https://hdl.handle.net/20.500.14352/58791 |
| Access Level: | acceso abierto |
| Palabra clave: | 535 Moire Deflectometry Fourier-Transform Fringe-Pattern Interferometer Demodulation Diffraction Image Óptica (Física) 2209.19 Óptica Física |
| Sumario: | We propose a robust procedure based on the regularized phase-tracking (RPT) technique to demodulate squared-grating deflectograms. The use of squared gratings, already reported, lets us multiplex the information of the deflections in two orthogonal directions in a single image, thus avoiding the necessity of rotating the gratings. The good noise-rejection characteristics of the RPT technique are improved by use of a quasi-Newton optimization algorithm and a quality-map-based algorithm for the crystal-growing process. |
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