Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10428783 | Optik - International Journal for Light and Electron Optics | 2005 | 6 Pages |
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.
Related Topics
Physical Sciences and Engineering
Engineering
Engineering (General)
Authors
Lujie Chen, Chenggen Quan, Cho Jui Tay, Yuanhao Huang,