Scan till you drop

Scanning, modelling with confidence

Project Surveyors used a variety of Leica Geosystems solutions to capture, model and analyse the data. Starting with the Leica ScanStations C10 and P20, the surveyors were able to capture minute details. The Leica ScanStation C10 was used for the external facades and inside for large structures, such as the parking garages, due to its long-range capability.

Inside, the Leica ScanStation P20 was used for its quality of producing fast reliable data at low resolution.

“The fast scanning time of the P20 helped us improve site workflow, increasing the number of scans per day fourfold,” said Jackson.

为了进行调查控制，项目测量师使用了Leica TS15和Leica Nova MS50多站。多阶也用于扫描窗口以进行更简单的捕获。这些仪器在每个级别的周围以及整个购物中心周围建立一个调查控制网络，这些仪器确保了毫米精度，以对齐改装构造的扫描。激光扫描靶标在控制网络中协调，以保持整体云的准确性。

A total of 3,700 scans from 55 days on site resulted from the project. The point clouds from these scans were cleaned and registered using Leica Cyclone 9.0. The entire process only took 20 days due to the addition of the auto-alignment registration within the software. Compared to point cloud-to-point cloud visual alignment, which would take around two minutes each to visually find common points, auto-alignment only takes 30 seconds to one minute.

“The time does not sound like much for a few scans, but when we’re talking about thousands of scans, this becomes a significant amount of time saved,” said Jackson. “With these savings, we were able to increase our productivity by at least 50 percent.”

该公司还利用莱卡TruView to provide the architects with the point cloud data so they could overlay in the model and have extra information, such as dimensions they needed to extract for accurate and realistic planning.

杰克逊说：“ Leica Truview图像是客户的可交付方式，但它们也帮助建模者完全了解了他们的建模。”

Autodesk Revit 2014 was used to model architectural elements while Autodesk Revit Mechanical, Electrical, Piping (MEP) was used to create pipes, plant, ducts and other services to create a partial MEP model of the loading docks. As the size and detail of this project would have taken one modeller 120 days to complete, Project Surveyors worked with a team of modellers in collaboration on one central model across a wired and large-data network.

使用Leica Cyclone 9.0中的导出选项，测量师分别将点云作为二进制PTG文件导出，或者统一为PTS文件。然后使用Autodesk Recap将文件转换为兼容Autodesk兼容的RCS文件，然后可以将其插入Revit并进行建模。杰克逊（Jackson）使用Leica Cloudwork进行修订，并补充说，将消除工作流程的导出和转换步骤，从而为建模者提供点云转换工具以及单个主数据源，而不是多个文件和要处理的文件版本。

“Using this laser scanning technology, we have won similar large projects, such as one in Sydney where we’re working with the same consultants who used this model as an example to the project owner of what they required as survey information,” said Scott Deveridge, Project Surveyors director. “Referrals to provide a similar service on another challenging project is the best feedback we can get.”

Explore next chapter:Lessons learned from HxGN Live

Story: Scan till you drop
第1章：介绍
第2章：扫描，自信建模
Chapter 3:Lessons learned from HxGN Live
Chapter 4:一个典型的例子