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|Title:||Fringe contrast-based 3D profilometry using fringe projection|
Quality-guided phase unwrapping
|Source:||Chen, L., Quan, C., Tay, C.J., Huang, Y. (2005-04-13). Fringe contrast-based 3D profilometry using fringe projection. Optik 116 (3) : 123-128. ScholarBank@NUS Repository. https://doi.org/10.1016/j.ijleo.2004.12.013|
|Abstract:||Quality-guided algorithm is a widely used method in phase unwrapping. This paper shows an accurate quality map based on fringe contrast for 3D shape measurement. Phase-shifted fringe patterns are projected onto an object surface by a programmable liquid crystal projector and recorded by a CCD camera. A wrapped phase map and a fringe contrast map are extracted from the deformed fringe patterns by the phase-shifting technique. Guided by the contrast map, the quality-guided unwrapping algorithm minimizes unwanted shadow and non-uniform surface reflectance effects and is able to retrieve a correct surface profile. Validity of the proposed method is tested on a fish model and a cutting tool specimen. © 2005 Elsevier GmbH. All rights reserved.|
|Appears in Collections:||Staff Publications|
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