救援任务：使用现实捕获来计划前修道院的重建亚博ag真人规律

Author: André Azevedo

Next to the Carmo Church in Braga, Portugal, sits a former Carmelite Convent founded in 1653. No longer occupied and in need of significant repair, the convent compound was acquired by property developer and renovation experts, Fortera.

To decide on the best way to sympathetically develop the complex site, which includes vaults, attics, and water features, Fortera asked civil engineering companyBuildgest进行完整的几何调查。为了捕获构建BIM模型所需的数据，Buildgest的技术经理AndréAzevedo使用了Leica Geosystems 3D激光扫描解决方案。

可视化3D中的环境

修道院有一个复杂的内部和exterior made up of multiple buildings, levels and outdoor space. Before Buildgest was appointed, Fortera had already commissioned a 2D survey. Unfortunately, this didn’t capture sufficient detail for them to move into the design phase of the development confidently. Azevedo explains, “The classic 2D survey has some flaws, so we proposed a laser scanning survey and an accurate architectural model for the building. This Building Information Model (BIM) will help the client´s architect team to study different intervention scenarios.”

Faster scanning in the field with a streamlined reality capture solution

潜在的建筑区域为5,000平方米，复杂的几何形状和六周的截止日期，需要迅速进行现场工作。如果他们花了很长时间，他们的建模团队将没有足够的时间完成工作。

Already a Leica Geosystems users, Azevedo chose theLeica BLK360成像激光扫描仪，Cyclone REGISTER 360,Cyclone FIELD 360, 3DReshaper (Cyclone 3DR） 和JetStream Viewer软件元素。

“我们需要可以快速准确地产生内部扫描的设备。与其他设备相比，扫描仪很小，轻巧，并促进了阁楼和洞穴等建筑物的困难区域的运输。产品和软件之间的工作流程流畅，快速。亚搏彩票手机版下载例如，Cyclone Field 360自动预注册扫描。这使我们在田间更快地进行了扫描。” Azevedo解释说。

7天内600次扫描

Azevedo和他的团队并行使用了两个BLK360扫描仪，持续7天来扫描修道院的建筑物。BLK360-同类产品中最小，最轻的成像激光扫描仪 - 用全彩色全景图像覆盖在高精度点云上。为了确保整个点云是准确的，建立了一个调查控制网络，该网络在建筑物和内部周围具有激光扫描目标。

A total of 600 detailed scans were taken. To improve efficiency, Azevedo used the Cyclone FIELD 360 mobile-device app to pre-register the point cloud while still on site. In his words, “Pre-registration of the collected information in the field saved time in post-processing tasks.”

Easy synchronisation, interoperability and processing

回到办公室，建筑最大的团队使用旋风注册360来清洁和注册扫描，从而创建统一的点云。Azevedo说：“旋风场和旋风分离器寄存器之间的同步很好，可以易于使用。”

Processing included giving some shapes more definition. “Ornamental details, like the central water fountain that lies on the internal patio was modelled with the help of 3DReshaper,” Azevedo explains. The data was then processed further by a team of two modellers over a period of five weeks to create a complete architectural BIM model for the client. Azevedo explains the value of accurate scan data to this process, “Modelling the existing vaults of the convent was challenging and the use of point cloud helped us to have a complete understanding of the geometry of these elements.”

“It's helpful to review the model with the photographic record”

When the geometric survey was complete, Buildgest presented their findings to Fortera. As well as delivering the BIM model, and an LGS file of the data, Buildgest used a Cyclone Publisher Pro and JetStream Viewer to show the client how to explore and move the point cloud. They see this as the best way to communicate the results.

“We always recommend the JetStream Viewer to our clients, because it's more specific and helpful to review the model with the photographic record. Using the viewer, the client was able to see the 360 images that were captured in the scanning process. Besides, it gives them the option to navigate through the point cloud with a simple intuitive tool,” Explains Azevedo. JetStream Viewer Portable is a free, no-install version designed for easy visualisation, to let those without survey training experience point cloud data.

Buildgest能够快速完成该项目，而不会损害质量。Fortera的首席工程师Pedro Ferreira说：“ Fortera对交付的信息的数量和质量感到非常满意。”现在，开发人员的建筑师计划对建筑物进行重新发明，并在修道院的350年故事中增加了另一章。