Laser scanning from heights

作者：Renata Barradas

近年来，Laser扫描彻底改变了测量专业。有可能在相对较短的时间内捕获大量数据，3D激光扫描仪are must-have instruments for collecting data to produce outputs that range from a simple topographic survey to a 3D model to preserve cultural heritage.

随着流程数字化和企业数字化数字化，世界各地的测量师公司都像Scan&Go, are adapting new technologies to offer better, faster and more specialised services to their clients. In collaboration with Leica Geosystems, Scan&Go, an Italian company leader in the field of topography and 3D high-definition survey, performed a functional test of its vehicle/tripod installation for 3D laser scanning using theLeica RTC360 3D laser scanner.

Tailored solution for 3D laser scanning

To achieve a更快，更有效地使用陆地激光扫描仪, Scan&Go creates systems that can be installed on any type of vehicle or on a pneumatic pole to allow easy movement between scan sessions and ensure greater measurement range.

安装在扫描和GO系统上，RTC360捕获在每秒200万点仅几分钟后，意大利的Castelvetro di Modena的中心。扫描与GO团队将RTC360安装在Scan＆Go的Level Lift屋顶和自动LP16R Leveler上。在第一次扫描中，团队从一个3-metre height. The remaining three scans were done at a距地面6米using Scan&Go vehicle installation.

“The height of the scanner allows to overcome the obstacles present and increases the scanning range and its accuracy of measurement,”explained Cristina Valchuk, sales manager at Scan&Go.“All scans are perfectly levelled –this eliminates vertical variations. Our satisfaction of the test made is very high. This approach ensures the safety of the operator and the instrumentation in the field and increases the productivity of the RTC360.”

测试的目的是verify the potential of the new RTC360 in combination with the Scan&Go system for laser scanning in mobile “stop” and “go” modewith the instrumentation installed on the vehicle. The Scan&Go team also wanted to test the视觉惯性系统的正确功能（VIS），在现场执行自动点云的注册，其速度高于步行的速度。点云收集在vehicle speed ranging from 10 to 20 kilometresand registered in real-time surprised the team.

“使用RTC360获得的结果非常好。在扫描过程中，系统非常稳定，可确保最大的测量精度。”said Valchuk.“这很快，因为3D激光扫描仪已安装在车辆上，并且在一项扫描与另一个扫描之间的移动过程中，您不必拆卸任何东西。”

从原始数据到智能数据

Point clouds are only a set of data points in space until stakeholders can visualise and interact with them. 3D models obtained from the point clouds help to inform the perception of reality and provide a georeferenced digital base for operations. Scan&Go creates 3D models for their clients so they can document, manage, renew or maintain any assets or environments. After post-processing data withCyclone REGISTER 360, experts created a 3D model of Castelvetro di Modena.

考虑到简单且高度自动化的工作流程，RTC360解决方案使用Edge Computing实时将扫描数据传输到平板电脑并自动处理扫描数据以提供real-time quality control和该领域的数据注册。

Withautomatic pre-registration，扫描与GO团队立即可立即使用高质量的点云。质量保证和完整性检查也在现场进行，使用平板电脑上的Cyclone Field 360移动应用程序。This reduced the complexity of the data capture process in the field and saved the team members time in the field and in the office由于他们能够离开项目站点的预注册，可以在Cyclone寄存器中最终确定比原始扫描数据更快。Scan＆Go知道，节省时间，工作流程简化和生产力的提高会自动转化为增加的利润和加速投资回报。

Reality capture systems from Geosystemsincrease the flexibility and mobility of professionals to map, geo-position, capture and extract featuresover LiDAR or photogrammetry measurements in restricted areas with毫米精度in an extremely agile and fast way.