How Hollis Captures, Processes, Manages and Delivers Reality Capture data

作者：Renata Barradas

Is data processing and producing CAD and other deliverables giving you a headache?

bob综合app赌博现实捕获专家知道，捕获数据只是过程中的一步。处理，管理和交付数据是工作流程的一部分。处理和生产CAD和其他可交付成果有时可能是工作流程中最耗时的部分。

自2003年以来，蒂姆·比奇（Tim Beach）是霍利斯（Hollis）的特许地理测量师和衡量的建筑专家，一直依靠英国的激光扫描。Beach位于测量的调查团队中，负责AEC级别详细信息项目。

在他的角色中，他可以测试硬件和软件，以确保解决方案对客户的效率尽可能高效。Beach已成功地将激光扫描纳入了Hollis现有的测量建筑调查工作流程中。

Within its 25-service offering, Hollis’ measured services integrate into several of the others, such as mechanical, electrical and plumbing engineering (MEP) where the team uses laser scanning for plant and environments requiring Revit modelling for clash detection exercises. The unit uses laser scanning for other applications, such as the rights of light (ROL) analysis to examine impacts of new developments, project management for refurbishing and redevelopment of existing buildings.

Hollis拥有多个Leica Geosystems设备，包括：

• 2Leica Scanstation P40s
• 3Leica RTC360 3D Laser Scanners
• 2Leica TS16和4个Leica TS12总站bob apple
• 3Leica Builder Total Stations
• 2Viva GS16 GNSSand 4 Viva GS08 plus GNSS
• 4Leica Cyclone REGISTERandCyclone REGISTER 360，2Leica Cyclone MODEL, 12CloudWorx用于AutoCAD, 12喷头连接器，2旋风发布者Pro。

近年来，霍利斯（Hollis）对雷卡（Leica Geosystems）设备进行了大量投资。在测试了各种硬件和软件提供商之后，我们选择了Leica Geosystems。我们发现Leica Geosystems为我们提供了最适合我们业务模型的解决方案。我们有许多扫描仪P40，总站和GPS用于控制，并将调查放在正确的位置bob apple,” said Beach.

Laser scanning a 180,000-square-feet building

The challenges of laser scanning an 11-floor 180,000 sq.ft. building in central Birmingham, U.K., go beyond the building itself, including finding locations which provided visible access to each face of the building in an already congested area. Hollis opted for laser scanning given the scale of the building, its complexities, and the client timescales and deliverables.

To scan each of the rooms on every floor, Hollis had to coordinate access arrangements with all tenants. “激光扫描与准确的调查控制能力使我们能够在建筑物周围移动，扫描当时我们可以访问的区域所需的东西，知道我们能够在结束时一起注册捕获的扫描数据，并且确信我们能够获得正确的结果，”海滩说。

客户要求的可交付成果包括标准的2D CAD信息，内容涉及平面图，高程和横截面。在项目期间，客户需要更多信息，包括各个位置的结构拱形和平板细节，对周围环境的完整地形调查，立面偏差报告和监视工作。

Data Capture

由于紧迫的期限,霍利斯部署两个teams each with a Leica ScanStation P40 and completed the survey in just five days. Eight-man days on-site were required to capture the inside of the building, plus one day to install survey control around the property and to do the external laser scanning. The team collected data with confidence, without the need for excessive survey control, generating 90 GB of raw data from approximately 1,500 scan positions. The Viva GS08 plus RTK GNSS was used to geo-reference multiple points around the site to transform the data to Ordnance Survey Grid and Datum.

处理数据

Hollis began registering the captured scan data after the first site inspection day. The two survey teams on-site sent the collected raw data at the end of each day to the local office to begin import and registration. All registration elements were carried out during the day and auto alignments left to process overnight. This workflow minimised the processing time and permitted the team to start the CAD work early on. In total, Beach’s team took six days for registration, resulting in a final database of 259 GB.

Beach and his team registered all scans using Cyclone REGISTER with local control and cloud to cloud techniques. Cyclone REGISTER allowed the team to split the registration into logical parts and combine them to generate a final master data set.

"We found that cloud-to-cloud provided the greatest flexibility in the site work and the registration of a building with such complex geometry. Being able to register your data together, combined with the P40 with a dual-axis compensator, ensures we are confident that the data we are producing is correctly orientated and we don’t have any issues downstream. […] Cyclone REGISTER gave us an incredibly flexible approach to how we undertook the registration,”海滩说。

管理数据

Hollis has 30 employees in the measured service team distributed across multiple offices who could require access to data for any given project at any given time. To generate the deliverables for the clients, cross-regional teams collaborate using a high-performance streaming and centralised project platform to access data over internal and external networks – Leica JetStream. Using this simplified point cloud access Hollis measured survey experts can import and render full-density point cloud data in real time within CAD applications and share JetStream Viewer files with various stakeholders. Using this approach, the real estate consulting company streamlines collaboration in projects.

"The use of Leica Jetstream has allowed us to host our data centrally in London, where everyone can access. If our regional offices undertake a scanning project, they can upload to the JetStream Server overnight, opening up the data to everyone else. For other teams who are not power users of scan data but occasionally need to use the data, we can host and archive their project's data,"海滩说。

Using Leica JetStream allowed the team to disseminate the final data set amongst various teams in various locations to complete the project on time and budget.“JetStream enabled us to complete the project in the most efficient manner and as accurately as possible.”海滩说。

Delivering data

测量员生成a great amount of data using laser scanning that is captured, processed and managed to provide actionable data that supports decision-making.

Leica TruView is the collaborative tool Hollis surveying team relies on to share point cloud data and design models. One of the many uses for TruView within Tim’s team is as a Q&A tool to ‘walkthrough’ models and for checking congested environments remotely and safely.

“LeicaTruView provides a location-based view of data from the sites. We use it to produce the deliverables using all information available – not just relying on slices in CloudWorx where features can be missed. For the building project in central Birmingham, our team could split the data logically by building and by floor. TruView allows viewers to measure, add geometry, incorporate hot links and embed geotags for asset management needs,”海滩说。

Full end-to-end solution from data collection to delivery

Hollis使用Leica Geobob综合app赌博systems的完整现实捕获工作流程，以最有效的方式为客户提供了平面图，部分和高程的可交付成果。通过重复使用先前收集的数据，团队可以很快满足客户的其他要求。配备射流的测量师，通过从一个中心位置加载和访问数据来节省时间，从而帮助按时和预算交付项目。

Watch Beach explaining how Hollis integrated hardware and software into different projects in the webinar“Increasing productivity and collaboration with Leica Geosystems total software solution.”