Accurate calibration method for a structured light system

Zhongwei Li; Yusheng Shi; Congjun Wang; Yuanyuan Wang

doi:10.1117/1.2931517

1 May 2008 Accurate calibration method for a structured light system

Zhongwei Li, Yusheng Shi, Congjun Wang, Yuanyuan Wang

Author Affiliations +

Optical Engineering, Vol. 47, Issue 5, 053604 (May 2008). https://doi.org/10.1117/1.2931517

Abstract

System calibration is crucial for any 3-D shape measurement system. An accurate method is proposed to calibrate a 3-D shape measurement system based on a structured light technique. The projector is treated as a camera to unify the calibration procedures of a structured light system and a well-established stereo vision system. The key to realizing this method is to establish a highly accurate correspondence between camera pixels and projector pixels and generate digital micromirror device (DMD) image sets for projector calibration. A phase-shifting method is used to accomplish this task. A precalibrated lookup table and a linear interpolation algorithm are proposed to improve the accuracy of the generated DMD image, and accordingly improve the accuracy of the projector calibration and the 3-D measurement. Some experimental results are presented to demonstrate the performance of the system calibration.

©(2008) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Zhongwei Li, Yusheng Shi, Congjun Wang, and Yuanyuan Wang "Accurate calibration method for a structured light system," Optical Engineering 47(5), 053604 (1 May 2008). https://doi.org/10.1117/1.2931517

Published: 1 May 2008

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