Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
850426 | Optik - International Journal for Light and Electron Optics | 2010 | 6 Pages |
Abstract
The phase error and its periodic behavior caused by the partial intensity saturation of fringe patterns in the digital projection grating phase-shifting profilometry are studied. A saturation coefficient K is defined to describe the saturation degree of the fringe patterns projected on a measured object. The distribution of the phase error is analyzed through a simulation method. Moreover, a novel phase-recovering algorithm is studied to resolve the phase error issue introduced by the partial saturated fringe patterns. The real phase can be recovered by the unsaturated intensity values. A series of results corresponding to different degrees of saturation defined by K are given to prove the validity of the proposed algorithm.
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Authors
Eryi Hu, Yuming He, Yanming Chen,