Title :
Calibration and performance evaluation of a 3-D imaging sensor based on the projection of structured light
Author :
Sansoni, Giovanna ; Carocci, Matteo ; Rodella, Roberto
Author_Institution :
Dipt. di Elettronica per l´´Autom., Brescia Univ., Italy
fDate :
6/1/2000 12:00:00 AM
Abstract :
In this paper, the procedure developed to calibrate a whole-field optical profilometer and the evaluation of the measurement performance of the system are presented. The sensor is based on the projection of structured light and on active triangulation. The dependence of the measurements on the geometric parameters of the system is shown, as well as the criterion to calibrate the system. From the extensive set or experiments carried out to evaluate the measurement performance, good linearity has been observed, and an overall mean value of the measurement error equal to 40 μm, with a variability of about ±35 μm has been estimated
Keywords :
active vision; automatic optical inspection; calibration; image sensors; optical projectors; reverse engineering; shape measurement; surface topography measurement; 3D imaging sensor; CMM; Gray code phase shift; active triangulation; calibration; geometric parameters dependence; linearity; measurement error; measurement performance; performance evaluation; reverse engineering; sensitivity analysis; structured light projection; whole-field optical profilometer; Calibration; Coordinate measuring machines; Image sensors; Optical imaging; Optical sensors; Phase measurement; Position measurement; Sensor systems; Shape measurement; Time measurement;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
