实现物体360°轮廓测量的新型轮廓拼接方法  

360?PROFILE MEASUREMENT USING A NOVEL IMAGE CONNECTION METHOD

作　　者：张晓玲[1] 林玉池[1] 吴波[1] 赵美蓉[1] 黄银国[1] 

机构地区：[1]天津大学精密测试技术及仪器国家重点实验室,天津300072

出　　处：《机械工程学报》2006年第5期182-185,共4页Journal of Mechanical Engineering

基　　金：教育部科学技术研究重点资助项目(99140)。

摘　　要：提出一种新型轮廓拼接技术用来实现复杂物体的360°几何轮廓的测量。应用光栅投射三维轮廓技术使被测物绕旋转轴进行多次旋转,获得能覆盖整个物面的多个单视角的三维坐标,利用坐标变换将这些数据转换到统一的坐标系下,然后应用正负方向掩膜矩阵法拼接合成物体360°轮廓。实践表明,应用该方法物体只需在4个角度0°、90°、180°、270°进行旋转,就能快速得到物体360°轮廓,它不仅可以用于普通连续面形的测量, 又可以用于含有间断的面形即自由曲面的测量。In order to measure the 360° geometry profile of complicated object, a novel method to implement the measurement of object＇s 360° profile is proposed. In the grating projection profilometry, when the measured object is rotated round X-axis, object＇s 3D profiles corresponding with different rotating angle can be gotten. In our method, the above profiles data in the respective single-view coordinate system are firstly transformed into the data in the same coordinate system by transform matrix which is derived from translation matrix and rotation matrix; A new ＂mask matrix method＂ is also proposed and employed to connect the transformed profiles data into the 360° profile of object. Experiment results show that the present method can get 360° profile of the measured object fast and well, in which only four objects＇ 3D profiles corresponding with four rotating angle, namely 0°, 90°, 180°, 270° are proceeded. It can measure the geometry profile not only of the continuous shape but also of the discontinuous shape.

关 键 词：轮廓拼接 光栅投射三维轮廓术 相移法 360°轮廓测量 坐标转换 掩膜法 

分 类 号：TN247[电子电信—物理电子学]