将Ayacucho转变为数字城市

作者：Renata Barradas Gutiérrez

Digital cities initiatives aim to collect valuable data and capture all surroundings in urban settings to generate smart models, supporting decision making processes and facilitating the delivery of new urban services. The mobile mapping, reality capture, airborne and asset management solutions provided by Hexagon Geosystems' Division are used in cities around the globe helping to digitise urban centres.

Aware that 3D models help to inform the perception on reality and provide a georeferenced digital base for operations in a city, Patronato Pikimachay, a non-profit organisation, approached C95 Creative, a leading global architecture and design firm, to create a smart digital city model of Ayacucho, Peru.

Ayacucho’s smart digital city project

C95 Creative specialists started the 3D digital modelling of this Peruvian city in 2017. To undertake a precise digital survey that would be the basis for a digital city model, the project collected georeferenced point clouds with images from 150 blocks in Ayacucho’s historic centre. Using a combination of Geosystems solutions, data from a50-kilometre trajectory was collected in three daysand the entire project deliverables were completed in six months.

“A valuable data base for smart cities is essential during the decision making of future urban interventions. We have been able to generate data bases of great value for cultural heritage, cataloguing, restoration and refurbishment works. We will keep exploring and looking for new ways of applying this technology in our sector with Leica Geosystems,"said Irene Ibisate, architect and director for the smart city Ayacucho project at C95 Creative.

Beyond the speed of obtaining and processing data, the quality and precision of the point cloud with overlaid images allowed C95 Creative to:

• Create a 3D model of the entire city centre
• Complete a catalogue of the main city elements
• Develop a study of the current situation and conservation state
• 进行文化遗产价值和保护研究
• Produce updated 3D cadastre and geometric data base of the city with real dimensions
• 生成城市的视频和图像，以作为未来干预工作的参考。

"To create in BIM [Building Information Modelling] a reproduction of an entire city in a few months was a great challenge. Thanks to the precision and speed obtained with Leica Geosystems products, we have been able to capture reality with complete data in a short amount of time,"说不平衡。

洋地黄的环境

Given the limited time for data collection and great extension of the site, scanning had to be fast. Reality capture systems from Geosystems increase the flexibility and mobility of professionals to map, geo-position, capture and extract features over LiDAR or photogrammetry measurements in restricted areas with millimetric precision in an extremely agile and effective way.

To capture the entire centre of Ayacucho, C95 Creative started the data collection with the Leica Pegasus:Two. With this mobile mapping sensor platform, data from a 50-kilometre trajectory was collected in three days. Laser scanning was done with the Leica ScanStation P40, to increase the level of detail of the pedestrian areas and squares with cultural heritage assets.

“不可能使用传统的解决方案和工具进行此类项目。Leica Geosystems产品使我们能够远程合作，并以该网站的全面了解远程工作，”bob综合app下载C95 Creative的BIM总监Maria Pascual说。

The data was processed and exported as imp.pts to Autodesk Revit, a BIM software. Leica Cyclone 3D point cloud post processing software, was used to post process the point clouds. To create a BIM model, the team worked with Leica CloudWorx and Leica JetStream software, allowing the better modelling and inclusion of the point cloud within the Autodesk Revit model.

“要建立点云作为数据库是追求如此范围的项目的唯一方法。通过诸如Jetstream之类的强大产品使我们的BIM模型有助于加快和激发这一过程。项目最终以质量增加了价值bob综合app下载以及从这些最新工具中获得的精确度，这些工具可以创建以不同格式和平台可用的大型数据库，”帕斯卡尔说。

Beyond cultural heritage value

Urban planners, construction companies or government officials need to have a more dynamic perception of a city with georeferenced data that mirrors reality to produce any application or service andguide any future interventions.

3D模型允许记录，管理，续订或维护城市中的资产。要符合联合国教科文组织的标准，并将Ayacucho的历史中心宣布为世界遗产，需要进行恢复和维护工作。数字化城市模型将是创造对社会和经济发展至关重要的更可持续和有效的城市环境的基石。

C95 Creative提供的3D模型将是该地区内部任何建筑干预的基础，从而指导受保护的城市元素的文化遗产评估和重建，这可能会随着时间的流逝而降低。

Beyond the cultural heritage value, the deliverables have also been used for other purposes, such as:

• Virtual reality (VR) and augmented reality (AR) of Ayacucho
• Previsualisation of plans
• Urban simulations
• Touristic applications
• Urban improvement analysis

Unleashing the full potential of reality capture

C95 Creative takes design to the smallest detail. One of the international leading firms in the AEC sector knows quality tools matter, so it has been using Leica Geosystems products for a long time.

“ C95发现了Leica Geosystems Reality Captbob综合app赌博ure Solutions，这是其BIM工作流程的理想工具。PEGASUS：两个允许在短时间内生成大区域的数据。P40用于扫描精度和速度，用于室内设计，康复，修复，翻新，工程和建筑。它与BLK360一起使用，以生成站点不同地标的数据并获得构建模型。此外，点云用于任何类型的数字调查，用于模拟的数据收集，报告，VR和AR，”帕斯卡尔说。

为了保持相关性，改善流程，不断提高质量并为其所有项目带来附加值，C95 Creative继续在其作品中引入最新的技术和流程。