We used transmission deflectometry to measure the three-dimensional shapes of optical components, and we used the Hilbert transform to retrieve the phases from measured deformed fringe images. Deflectometry is useful for measuring large-scale samples, and specular samples. We have retrieved the phases from deformed fringe images and Hilbert-transformed images, and have used the least-squares method to find the height information. We have verified that phase retrieval using Hilbert transform is useful by computer simulation and experiment.Keywords: Deflrctometry, Phase measuring deflectometry, Hilbert transformOCIS codes: (120.0120) Instrumentation, measurement, and metrology; (120.2650) Fringe analysis; (120.3940) Metrology
No takes yet. Share an insight, caveat, or question.
Na et al. (2016) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: