可重构三维激光彩色扫描仪

Reconfigurable 3D Laser Colour Information Acquisition System

针对原三维激光扫描系统3DLCS存在的问题,研制了基于FPGA的可重构实时三维激光彩色扫描仪.介绍了系统基本测量原理和系统总体构成,设计了基于FPGA处理器的硬件系统结构,并阐述了其工作原理.由FPGA处理器完成提取图像中激光带中心线、人头轮廓线和中心颜色线等算法.对三维重建有用信息经计算机接口送入主机,在主机上进行三维重建和三维构型.描述了系统数据处理流程和关键算法.系统可以实时地获取目标的三维和色彩信息,并在计算机上重建和显示立体三维图形.列出了实验结果.采用FPGA专用集成电路和主从式系统结构,大大提高了物体三维信息获取的速度,显著的改进了整个系统的性能,降低了产品成本.

The new reconfigurable 3D laser colour information acquisition system has been developed to settle the problems of the former three-dimensional laser color scanner （3DLCS）. The system basic theory of measurement and whole structure are introduced. The hardware system architecture based on FPGA parallel processor has been designed and its work principle has been discussed. The key algorithms of extracting central line of laser stripe, head contour line and central colour line are accomplished by FPGA processor. Then these important information is sent into host computer through PCI interface which accomplishes advanced image processing, 3D reconstruction and 3D modeling. The flow chart of processing data and the key algorithms are described too. The system can acquire 3D and colour information of object in real time and the 3D images are displayed promptly on the screen of host computer. Finally, the experimental results of system are shown. By adopting ASIC and master-slave system architecture, it enhances the speed of obtaining 3D information of object greatly and overcome the computational bottleneck. The system performance is improved and the cost of the devices is low.