| 论文简介 |
In the camera-projector measurement system, calibration is a key to the measurement accuracy; especially it is more difficult to get the same calibration accuracy for projector than camera due to the inaccurate corresponding relationship between its calibration points and imaging points. Thus, based on stereo vision measurement models of the camera and the projector, a calibration method with direct linear transformation (DLT) and bundle adjustment (BA) is introduced to adjust the corresponding relationships for better optimization purpose in this paper, which minimize the effect of inaccurate calibration points. And an integral method is presented to improve the precision of projection patterns to compensate the projector resolution limitation. Moreover impacts of system parameter and calibration points errors are evaluated when the calibration points positions change, which does not only provide a theoretical guidance for the rational layout of the calibration points, but also can be used for the optimization of system structure. Finally, calibration of the system is carried out and the experiment results show that better precision can be achieved with those processes. |
(创新港)
