• CN:11-2187/TH
  • ISSN:0577-6686

›› 2006, Vol. 42 ›› Issue (5): 182-185.

• 论文 • 上一篇    下一篇

实现物体360°轮廓测量的新型轮廓拼接方法

张晓玲;林玉池;吴波;赵美蓉;黄银国   

  1. 天津大学精密测试技术及仪器国家重点实验室
  • 发布日期:2006-05-15

360o PROFILE MEASUREMENT USING A NOVEL IMAGE CONNECTION METHOD

ZHANG Xiaoling;LIN Yuchi;WU Bo;ZHAO Meirong;HUANG Yinguo   

  1. State Key Laboratory of Precision Measuring Technology and Instruments, Tianjin University
  • Published:2006-05-15

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。

关键词: 360°轮廓测量, 光栅投射三维轮廓术, 轮廓拼接, 相移法, 掩膜法, 坐标转换

Abstract: In order to measure the 360o 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 360o profile of object. Experiment results show that the present method can get 360o profile of the measured object fast and well, in which only four objects’ 3D profiles corresponding with four rotating angle, namely 0o, 90o, 180o, 270o are pro-ceeded. It can measure the geometry profile not only of the continuous shape but also of the discontinuous shape.

Key words: Coordinate transform, 360o profile measurement, Grating projection profilometry Phase shift, Image connection, Mask matrix method

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