Calibration methods for 3D measurement systems

Kevin G. Harding; George R. Mather Jr.

doi:10.1117/12.417199

12 February 2001 Calibration methods for 3D measurement systems

Kevin G. Harding, George R. Mather Jr.

Proceedings Volume 4189, Machine Vision and Three-Dimensional Imaging Systems for Inspection and Metrology; (2001) https://doi.org/10.1117/12.417199
Event: Intelligent Systems and Smart Manufacturing, 2000, Boston, MA, United States

Abstract

With the improving capabilities and acceptance of laser triangulation based systems, the natural extension of these systems to 3D measurement tools is gradually coming about. As with any metrology tool, calibration, including the ability to verify calibration in the field is becoming an important issue to potential users. There is currently no standard method of doing these calibrations. The methods used in Coordinate Measurement Machines, such as looking at polished spheres, were developed to account for some of the limitations of probing capabilities of the time such as touch probe lobing errors and machine axis squareness. Optical probes do not work the same as mechanical touch probes, and as such have new problems as well as capabilities. The ability to establish a calibration over an entire field at one time, using tens to hundreds of thousands of points rather than tens to a hundred points is both viable and necessary to effective 3D system calibration. This paper will discuss the basic calibration problems particular to triangulation based 3D systems that need to be addressed. The issues to be addressed include both optical aberrations such as field curvature and distortion as well as the effects of light distribution and surface reflectivity. Finally, we will describe and contrast a number of potential methods for performing effective full-field calibrations and discuss the pros and cons of each approach. Experimental results will be presented to illustrate these comparison points.

Citation Download Citation

Kevin G. Harding and George R. Mather Jr. "Calibration methods for 3D measurement systems", Proc. SPIE 4189, Machine Vision and Three-Dimensional Imaging Systems for Inspection and Metrology, (12 February 2001); https://doi.org/10.1117/12.417199

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