Development and characterization of a 3D measuring system based on integration of gray code and phase-shift light projection

Giovanna Sansoni; Sara Lazzari; Matteo Carocci; Franco Docchio

doi:10.1117/12.269751

21 March 1997 Development and characterization of a 3D measuring system based on integration of gray code and phase-shift light projection

Giovanna Sansoni, Sara Lazzari, Matteo Carocci, Franco Docchio

Author Affiliations +

Proceedings Volume 3023, Three-Dimensional Image Capture; (1997) https://doi.org/10.1117/12.269751
Event: Electronic Imaging '97, 1997, San Jose, CA, United States

Abstract

In this paper, a 3D measurement procedure is presented, which combines the gray code light projection technique and the phase shift method. The aim is the improvement of the performance of a 3D imaging system based on structured light projection. The measuring procedure based on gray code light projection demonstrates the ability of measuring objects presenting marked discontinuities of shape, such as steep slopes, grooves and holes: the experimental tests performed show that the measurement accuracy is up to 0.42% and the precision is 0.3% of the measuring range. The accuracy of the measurement is mainly limited by its resolution. To increase the system performances, the ability of the phase shift method to achieve higher resolution has been used: the height values given by these two methods are combined in a procedure which shows increased resolution and accuracy on an extended measuring range. The basic aspects of the two basic techniques for 3D imaging and profiling are here discussed. The combined procedure which integrates them is detailed, and some relevant experimental results are reported.

Citation Download Citation

Giovanna Sansoni, Sara Lazzari, Matteo Carocci, and Franco Docchio "Development and characterization of a 3D measuring system based on integration of gray code and phase-shift light projection", Proc. SPIE 3023, Three-Dimensional Image Capture, (21 March 1997); https://doi.org/10.1117/12.269751

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