机构地区: 西北工业大学自动化学院
出 处: 《传感技术学报》 2004年第4期537-540,共4页
摘 要: 为了记录下颌的运动过程 ,设计了两种刚体六自由度位移测量方法。方法一使用三束相互正交的激光和一个半透明的漫反射屏 ,方法二使用两个重叠的网格屏和两束成一定夹角的激光束 ,用一个CCD视频摄像机采集测量图像 ,通过简单的计算得到刚体的位置与姿态。实验结果表明本文介绍的方法 ,计算公式简单 ,实时性强 ,连续测量无误差积累 ,测量精度可满足口腔医学要求。结论 :该方法可用于下颌运动过程的记录。 In order to record the movements of mandible, two of Six freedom displacement measurement methods are designed. In the first method, three laser beams that form Descartes’ frame and a half transparent screen are adopted. In the second method, two superposed grid screens and two laser beams are adopted. A CCD video camera is used to take pictures in both methods. The approaches can be used to record the positions and the attitudes of a rigid body continually, and has the characters of simple, real time, and no errors accumulation. Conclusion: The methods can be used in dentistry for record the movements of mandible.