Manhole inspection in the ‘Building of the Year 2021’ in Czechia
Job
The Prague Municipal Sewage Authority had the imposing manhole structure inspected with the PANORAMO SI 4K inspection system. IBAK used this practical application to investigate whether the data quality of the PANORAMO scan is sufficient to create a digital twin that realistically reproduces both the geometry and the texture of the structure's surface.
Special feature
The manhole is designed as a monolithic reinforced concrete pipe with an internal diameter of 5.25 metres and reaches a total depth of 35.50 metres.
Solution
3D reconstruction is a process whereby three-dimensional digital models of physical objects or environments are created. This is done by capturing and processing data, the source of which can be for instance stereo camera images, such as those from the PANORAMO SI 4K. Since the images are captured with this inspection system by two cameras positioned at a specific distance from each other, the same scene is scanned multiple times from different viewing angles. By evaluating the differences between the images, the depth information of the scene can be calculated using mathematical models. The result is a detailed 3D model that realistically represents the shape, the structure and also the texture of the original. The visualised representation of manholes in 3D helps to identify weak points, damage and wear at an early stage and to take targeted measures before major problems arise. This supports the decision-making process of engineers, urban planners and other stakeholders by providing clear and vivid data presentations.
Results
A high-density point cloud could be generated from the PANORAMO image data. It was demonstrated that the quality of the scans generated with PANORAMO is sufficient to create a complex digital twin. The outstanding data quality that has now already been generated with PANORAMO SI for 16 years has proved its future viability and precision.
Company presentation
Vodovody a kanalizace Jablonné nad Orlicí A.S., IBAK's sales and service partner for Czechia, was one of the first companies outside Germany to sell PANORAMO for main sewers and is therefore a committed pioneer of 360-degree camera technology.
