Document Type

Article

Publication Date

3-14-2011

Journal or Book Title

Optics Express

Volume

19

Issue

6

First Page

5149

Last Page

5155

DOI

10.1364/OE.19.005149

Abstract

The technique of generating sinusoidal fringe patterns by defocusing squared binary structured ones has numerous merits for high-speed three-dimensional (3D) shape measurement. However, it is challenging for this method to realize a multifrequency phase-shifting (MFPS) algorithm because it is difficult to simultaneously generate high-quality sinusoidal fringe patterns with different periods. This paper proposes to realize an MFPS algorithm utilizing an optimal pulse width modulation (OPWM) technique that can selectively eliminate high-order harmonics of squared binary patterns. We successfully develop a 556 Hz system utilizing a three-frequency algorithm for simultaneously measuring multiple objects.

Comments

This article is from Optics Express 19 (2011): 5149–5155, doi:10.1364/OE.19.005149. Posted with permission.

Rights

This paper was published in Optics Express and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://dx.doi.org/10.1364/OE.19.005149. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.

Copyright Owner

Optical Society of America

Language

en

File Format

application/pdf

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