Digitalising the Spanish Royal Palace with laser scanning

Author:Maribel Pros

Democratisation of 3D laser scanning and reality capture increasingly means more industries can apply the technology in their daily work, including for example, restoration and preservation.

在西班牙，Patrimonio Nacionalis the government institution in charge of administering and preserving some of the sites and historical buildings owned by the Spanish State. Patrimonio Nacional needed to create an accurate 3D model of one of Spain’s most iconic buildings: The Royal Palace in Madrid. The goal was to produce a unified digital record of the current state of both the interior and exterior of the building, adding to existing records that date as far back as 1738 when construction began.

项目获得朋友ace, which welcomed more than1.5 million visitors在2017年，有超过137,500 square metres, began in the summer of 2018. Following a public tender, the project was commissioned to the services department of multinational surveying services businessgrupo acre。The proposal included the use of Leica Geosystems’ latest 3D laser scanning technology. In order to make the 3D model a reality, theLeica Scanstation P40terrestrial laser scanner was used in partnership with theLeica BLK360，世界上最小，最容易使用成像激光扫描仪。

Maximum detail in the most confined spaces

This ambitious project was divided in two phases and specifically designed to guarantee maximum precision and minimum disturbance to the space. In the first phase, onsite scan work was completed with the BLK360 and P40. Atotal of 5,300 scanswere taken,其中1,300人被BLK360捕获，平均每天40张扫描。在第二阶段，使用两个设备收集的数据使用Leica Cyclonesoftware, resulting in the final unified point cloud.

BLK360易于使用，尤其是在较小的空间中，这意味着使用P40进行较大数据收集的技术人员可以同时使用BLK360作为访问较小空间的补充。“This increased efficiency in our daily data collection by up to 25 per cent compared to using the P40 alone,”Grupo Acre技术总监Oscar Gonzalez说。

按下单个按钮，BLK360捕获了360度高动态范围成像（HDR）和A360,000-point-per-second laser scan。这在历史建筑（包括其楼梯）内最有限的空间中产生了极高的细节。

By deploying Leica Geosystems’ scanning technology, data and information that was previously unknown has now been uncovered - such as the exact number of rooms and windows in the280年历史的建筑。到目前为止，这仍然是一个谜，因为自初始建筑以来，空间经过逐步修改和改编，以适应多年来不同的皇家居民。

改变历史保护的未来

该项目制定了皇宫的更新平面图，为在全国范围内数字化建筑物数字化的计划设定了标准和先例。Patrimonio Nacional现在拥有这座历史悠久的建筑的统一和毫米准确的平面图，不仅是为了记录其历史，而且还指导其将来的维护和保存。

皇宫的地下一楼“皇家阿米拉博物馆”。为了获得此水平的详细信息，在房间的不同部分进行了20次扫描，使用Leica P40完成了。

在Leica的Cyclone软件中处理了1,217张扫描，以将其交付给Patrimonio Nacional。在上方，您可以看到在庭院和屋顶上完成的97个室外扫描。总共使用了817张P40扫描和400张BLK360扫描来捕获宫殿。