Double spectral modulation profilometry: a solution to the problem of stationary phase

A. L. Guerrero

doi:10.1117/12.2308809

23 July 1993 Double spectral modulation profilometry: a solution to the problem of stationary phase

A. L. Guerrero

Proceedings Volume 1983, 16th Congress of the International Commission for Optics: Optics as a Key to High Technology; 1983AU (1993) https://doi.org/10.1117/12.2308809
Event: 16th Congress of the International Commission for Optics: Optics as a Key to High Technology, 1993, Budapest, Hungary

Abstract

The measurement of three-dimensional object shapes plays an important role in machine vision solid modelling, automatic manufacturing, and other industrial applications /1/. Well- known optical methods for 3D-shape inspection are moire-technique /2/ and contouring /3/. Unfortunately, they lack as a rule on the fact of measuring only one coordinate, i.e. the height above a reference surface. The other coordinates in the reference plane have to be determined using the pixeldistance of the observing ccd-camera or by other means. Here, we demonstrate a real 3D-coordinate measuring system using fringe projection techni- ques where the scale of coordinates is given by the illumination-structures. This method has the advantage that the aberration of the observing system and the depth-dependent imaging scale have no influence on the measurement of coordinates. Moreover, the measurements are independent of the position of the camera with respect to the object under test.

Citation Download Citation

A. L. Guerrero "Double spectral modulation profilometry: a solution to the problem of stationary phase", Proc. SPIE 1983, 16th Congress of the International Commission for Optics: Optics as a Key to High Technology, 1983AU (23 July 1993); https://doi.org/10.1117/12.2308809

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