Point cloud registration is generally required to combine multiple scans from various locations to generate a complete 3D reconstruction model. However, this registration process is error-prone and time-consuming. To deal with this problem, this study presents a novel registration-free point cloud generation method for the 3D reconstruction of small-scale components and interior rooms, using rotating flat mirrors. First, a geometrical model is developed to define the relationship between the laser scanner, mirrors, and target structure. Second, the optimal positions of the laser scanner and mirrors, as well as the optimal mirror sizes, are determined from the developed geometrical model. To validate the proposed technique, simulation tests and experimental validations are conducted on a precast concrete slab and an interior room. The validation results show that the proposed technique facilitates efficient and accurate registration-free 3D point cloud generation without changing the laser scanner location, demonstrating its potential in the construction industry.

中文翻译：

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使用旋转镜的免注册点云生成技术

通常需要点云配准来组合来自不同位置的多次扫描以生成完整的 3D 重建模型。但是，此注册过程容易出错且耗时。为了解决这个问题，本研究提出了一种新的免注册点云生成方法，用于使用旋转平面镜对小规模组件和内部房间进行 3D 重建。首先，开发几何模型来定义激光扫描仪、反射镜和目标结构之间的关系。其次，激光扫描仪和反射镜的最佳位置以及最佳反射镜尺寸由开发的几何模型确定。为了验证所提出的技术，在预制混凝土板和内部房间上进行了模拟测试和实验验证。