Shadow moire by phase shifting method and applications

Gerard Mauvoisin; Fabrice J. Bremand; Alexis Lagarde

doi:10.1117/12.169362

15 March 1994 Shadow moire by phase shifting method and applications

Gerard Mauvoisin, Fabrice J. Bremand, Alexis Lagarde

Proceedings Volume 2065, Optics, Illumination, and Image Sensing for Machine Vision VIII; (1994) https://doi.org/10.1117/12.169362
Event: Optical Tools for Manufacturing and Advanced Automation, 1993, Boston, MA, United States

Abstract

The shadow moire is one of the optical techniques which is able to give level lines of an object with respect to a master grating plane. Level lines result from the interferences between the lines of the master grid and their shadow projected by a ponctual source light. The sensitivity of this procedure is a few tenths of millimeters in best cases. A complete study is presented showing the influence of the different parameters. It is shown that only one possibility is available. We then propose an automated procedure based on a 2D FFT algorithm to determine precisely the phase shift value introduced by a coarse object translation. Finally, the presented applications on 3D shape reconstruction and out-of-plane displacement field measurement show the potentiality of shadow moire is greatly improved with an accuracy of 0.02 mm.

Citation Download Citation

Gerard Mauvoisin, Fabrice J. Bremand, and Alexis Lagarde "Shadow moire by phase shifting method and applications", Proc. SPIE 2065, Optics, Illumination, and Image Sensing for Machine Vision VIII, (15 March 1994); https://doi.org/10.1117/12.169362

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available