线激光-立体视觉三维数据获取系统研究

通过将三目立体视觉和线激光扫描传感器两种物体表面三维数据获取设备集成到三坐标测量机(CMM),形成一种新型的反求工程中的数据获取系统,其中由三目立体视觉来获得物体的边界或轮廓信息、线激光扫描传感器获得物体表面的三维数据,利用多传感器的信息融合技术对三维数据进行分割,提取被测物体的几何特征,并在此基础上构建物体模型.采用这种多传感器集成坐标测量系统避免了单一传感器的局限性,从而为非接触测量系统在反求工程中的应用开辟了新的途径.

3D data acquisition system based on line-laser-machine vision and stereo vision

Based on the tri-nocular stereo vision and line-laser scanning sensor, three-dimensional (3D) object surface data and object boundaries (or contours) are acquired. A novel reverse-engineering-based system is then established to integrate them into a CMM machine by using the multiple-sensor information synthesis and decomposition technique. In this manner, geometric features of objects are extracted for object modeling. Therefore, this approach provides a new way to apply the non-contacting measurement technology in the reverse engineering area.