将拼图拼凑在一起

作者：沃尔特和马丁·皮哈茨，October2016

邦纳·穆斯特（BonnerMünster）（波恩大教堂）是德国最古老的教堂之一。波恩旧城中心的主要大教堂，教堂的现有结构可以追溯到13世纪。由于缺乏适当的结构文档，时间的破坏和修复不佳，使他们的疤痕都留在了这座历史悠久的建筑物上。除此之外，第二次世界大战中的空袭造成的严重损害，邦纳·穆斯特（BonnerMünster）处于令人震惊的状态，早就应该进行大规模翻新。决定致电位于德国波恩的Walter和Martin Pilhatsch的工程办公室，以收集和分析BonnerMünster教堂的数据。三代大地测量经验结合了3D激光扫描，无人机空中调查和照片数据分析的知识，使Pilhatsch测量团队成为这项复杂工作的最佳选择。使用Leica Scanstation P40和HDS7000，该团队可以在波恩市中心的心脏中心完成全面的3D扫描。

了解邦纳·穆斯特（BonnerMünster）的结构损害以正确恢复教堂非常重要。为此，需要对外墙的高度精确的3D扫描。这些数据帮助支持历史保护机构的计划并计算恢复成本。

详细的三维激光扫描被要求创建the floor plan of six levels and 12 different building sections. To accomplish this data collected from the project’s different sensors, such as Leica Geosystems' ScanStation P40, MS50 MultiStation, TS15 total station and an Unmanned Aerial Vehicle (UAV) needed to be efficiently linked.

Like a puzzle, the different data needed to fit together to build the model based on the geodetic network. Using precise TPS measurements from the TS15 and MS50, a basis for combining the scan data with the national coordinate system was created to become the foundation for this highly accurate geodetic network used to aid in the restoration of the church.

Height points were also connected to this network using the precision of a Leica DNA03 level. The actual surveying of the Bonner Münster was accomplished using a HDS7000 scanner and the latest ScanStation P40. The data of the façade’s towers and high roofs was collected using a UAV with a Sony a6000 camera. These acquired images were then adjusted and geometrically rectified so that the image proportions were not distorted.

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