Quality Control Of Small Mechanical Pieces Using Optical Correlation Techniques

G. Indebetouw; T. Tschudi; G. Herziger

doi:10.1117/12.954702

Abstract

An objective and automatic method for quality control in a production line has been investigated. The proposed technique is an optical correlation in which the dimensional information of a master piece is stored in a hologram. A real time signal, which is a measure of the similarity between the master and the tested piece is obtained by integrating the correlation distribution over a small area on a photo detector. The necessity of an accurate positionment and orientation of each piece, which would be essential for high precision control can be eliminated by scanning the detector area. Synthetic holograms were found particularly helpful to adapt the response curve to practical requirements (sensitivity, dynamic range, ...) and to enhance some critical features of the work piece. Simple examples show the possibility of detecting shape errors of a few microns (less than 1% of the dimensions of the piece under test).

Citation Download Citation

G. Indebetouw, G. Indebetouw, T. Tschudi, T. Tschudi, G. Herziger, G. Herziger, } "Quality Control Of Small Mechanical Pieces Using Optical Correlation Techniques", Proc. SPIE 0074, Image Processing, (9 July 1976); doi: 10.1117/12.954702; https://doi.org/10.1117/12.954702

ACCESS THE FULL ARTICLE

PERSONAL SIGN IN
Full access may be available with your subscription

Email or Username Forgot your username?

Password Forgot your password?

Show

Remember Email/Username on this computer

Remember Password

No SPIE account? Create an account
or Institutional Sign In via Shibboleth

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

Members: $14.40

Non-members: $18.00 ADD TO CART

Show All Keywords

Keywords/Phrases

Search In:

Publication Years