针对牙颌等待测物非接触式光学三维测量,提出了一种融入标定功能的夹具设计方法,实现了测量过程中待测物与标定靶的空间一致性;定义了单目视觉测量过程涉及到的坐标系统;提出了一种基于坐标配准的点云拼合技术,简化了点云拼合流程,实现了点云拼合理论零误差;应用张正友标定方法对摄像机进行了标定;通过实验验证,得到了具有一定精度的牙颌三维模型点云拼合数据,实现了较快的测量速度,为提高牙颌测量系统的整体精度提供了有力支撑。
In view of non-contact optical three-dimensional measurement of objects to be measured.A jig design method which integrates the calibration function is proposed for realizing spatial coincidence during the process of objects to be measured and calibration target.The coordinate systems are defined monocular vision measurement process involved.A coordinate matching-based point clouds registration technology is proposed for simplifying the process of point clouds registration and simultaneously realizing the zero error of point clouds registration theory.Zhang Zhengyou calibration method is applied to calibrate the camera.With the experimental verification,cloud registration data with some precision is obtained and faster measurement speed is realized which significantly support the overall accuracy of dental measurement system.