Online Calibration for a Stereo Vision Measurement System

Abstract:

Article Preview

A new method for calibrating stereo vision measurement system is presented. By moving a rigid optical reference bar in a pattern in and around the measurement volume, the relative orientation and position of the two cameras can be determined by using the epipolar constraint, the linear normalization eight-point algorithm and the M-estimator method. The scale factor of the translation between the two cameras can be calculated by the distances between the marks on the reference bar. With automatically controlled infrared LED marks, the imaging feature points have a uniform intensity profile and a high contrast with background. The calibration accuracy can be improved. The simulation and experiments have shown that the calibration accuracy can be comparable with the complex off-line calibration.

Info:

Periodical:

Key Engineering Materials (Volumes 295-296)

Edited by:

Yongsheng Gao, Shuetfung Tse and Wei Gao

Pages:

723-728

DOI:

10.4028/www.scientific.net/KEM.295-296.723

Citation:

Z.J. Yu et al., "Online Calibration for a Stereo Vision Measurement System", Key Engineering Materials, Vols. 295-296, pp. 723-728, 2005

Online since:

October 2005

Export:

Price:

$35.00

In order to see related information, you need to Login.

In order to see related information, you need to Login.