一种多目立体视觉的三维激光扫描系统设计

A Laser 3d Scanner System Based on Multi-camer 3D-reconstruction

论文设计出了一种多目立体视觉的三维激光扫描系统,该系统基于ZYNQ异构计算平台,通过对精密的升降台进行控制,使用四组环绕形状的双目相机来获取不同位置处的线激光光带图像,提取光带中心,进行图像匹配,利用视差原理计算出所有光带中心的坐标,并将四路光带中心的坐标转换为统一的世界坐标系,进行点云数据的融合,最后快速地获取物体的三维点云数据,提高了系统的扫描速度及集成度。通过实验结果证明,在快速获取物体三维点云数据的情况下且物体的扫描精度可以保证在1mm的范围内,验证了该系统的可行性。

This paper proposes a laser 3d scanner system based on multi-camera 3D-reconstruction.This system is implement. ed on Xilinx zynq soc platform. Firstly,four groups of strip image formed by the laser line with the help of four stereo cameras sur. rounding object are obtained to scan. secondly,the center of light strips are acquired and matched and the coordinates of the light strips are calculated by using stereo vision technique and converted to the same world coordinate system. Lastly,the point cloud of the object is obtain by merging these separate data. This method greatly improves the integration and speed of the 3D scan system. Although our experiments,it is found that the system has accuracy in approximately 1 mm,which confirms the feasibility of it.