Existing systems have disadvantages such as slow running speed, long time-consuming, and poor rendering effect in virtual reconstruction of architectural spatial structure. In order to solve such problems, virtual reconstruction system of building space structure is designed using laser 3D scanning technology under condition of fusion of multiple big data. The system was equipped with a 3D laser scanner and connected to computer, and the noise interference was reduced by image preprocessing module to complete the hardware design. The system improved user interface and maintenance module. Eventually, 3D model reconstruction was realized via data acquisition, data registration, coordinate transformation and 3D rendering. The results show that the system designed in this paper runs fast, and color of reconstruction results is consistent, which indicates that reconstruction results of building space structure obtained by the system are conducive to in-depth study of building space.

现有系统在建筑空间结构的虚拟重构中存在运行速度慢、耗时长、渲染效果差等缺点。为解决此类问题，利用激光3D扫描技术在多种大数据融合的条件下设计了建筑空间结构虚拟重建系统。该系统配备3D激光扫描仪并与计算机相连，通过图像预处理模块降低噪声干扰，完成硬件设计。系统改进了用户界面和维护模块。最终通过数据采集、数据配准、坐标变换和3D渲染实现3D模型重建。结果表明，本文设计的系统运行速度快，重建结果颜色一致，