Application of improved phase-measuring profilometry in nonconstant environmental light

Authors
Li, WS Su, XY
Citation
Ws. Li et Xy. Su, Application of improved phase-measuring profilometry in nonconstant environmental light, OPT ENG, 40(3), 2001, pp. 478-485
Citations number
15
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Optics & Acoustics
Journal title
OPTICAL ENGINEERING
ISSN journal
00913286 → ACNP
Volume
40
Issue
3
Year of publication
2001
Pages
478 - 485
Database
ISI
SICI code
0091-3286(200103)40:3<478:AOIPPI>2.0.ZU;2-T
Abstract
The accuracy of phase-measuring profilometry is greatly influenced by envir onmental light, especially outdoors. The errors caused by changes of the en vironmental light are analyzed, and some simulated fringe patterns are proc essed. A new calibration algorithm, which performs intensity background and fringe amplitude transformations, is proposed. Theoretical analysis and ex perimental results verify that the improved phase-measuring profilometry is insensitive to the change of environmental light. (C) 2001 Society of Phot o-Optical Instrumentation Engineers.