Tiếng Việt
Applying 3D Scanning Technology and 3D Scanners in Heritage Preservation
VMT Solutions has taken part in many projects applying 3D laser scanning to heritage preservation and restoration. To date, that adds up to a few hundred projects, large and small, in developed countries such as Switzerland, Germany, the Netherlands and Austria…
3D laser scanning is already widely used for heritage preservation in advanced countries. In the past, high prices meant only specialized government agencies owned the equipment. Today the technology is no longer out of reach: laser scanners are now affordable for private surveying companies. Heritage preservation and restoration is the application where the practical, irreplaceable value of this technology is clearest. VMT Solutions has taken part in many projects applying 3D laser scanning to heritage preservation and restoration. To date, that adds up to a few hundred projects, large and small, in developed countries such as Switzerland, Germany, the Netherlands and Austria… The most recent is the Laufen Castle project in Switzerland, a showcase for “applying 3D laser scanning to heritage preservation.” The castle, more than 1,000 years old, is a famous landmark beside the Rhine Falls in Switzerland. Over its long history it has been renovated many times, but only with minor repairs. This time, the owner chose to use the latest technology: 3D scanning and rebuilding the entire structure, inside and out, in full detail. The 3D data was then used for several purposes: – Managing the building with BIM (Building Information Modeling), – Accurate 3D data helps contractors plan the restoration better and finalize the restoration plan before work starts. The 3D scanning was done by VDE – Villa Digital Engineering, a specialized Swiss company, with nearly 500 scan positions inside and out. VMT Solutions processed the scan data with specialized software and built the 3D model. At the owner’s request, detailed drawings were produced at 1:20 scale, accurate to the millimeter. With strong support from ARCHICAD 19 by Graphisoft, which can now work directly with laser scan data, building the model became much faster and easier than before. Inserting laser scan data into ARCHICAD 19 makes it easy to check the 3D model against the as-built data for overlaps, which improves the model’s accuracy. 3D laser scanning for heritage preservation in Vietnam VMT Solutions is ready to work with Vietnamese partners on heritage preservation projects, laser scan data processing, 3D modeling and creating 2D drawings from laser scan data. Below are some details and images from the project – Scan positions: 491 – Total area: 6,220 m² – Scanning time: almost 2 weeks – 3D modeling and detailed drawings: 30 working days Real photo from TripAdvisor
Schloss Laufen as it stands today
See also: 3D laser scanner
3D model – Scan to CAD Modeling
3D render in ARCHICAD 19 – Scan to CAD Modeling
Interior roof structure – Scan to CAD Modeling
A view of the interior
Source: VMT Solutions
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FAQ
What are the benefits of 3D laser scanning in heritage preservation?
3D laser scanning records the current state of a structure with high accuracy and no contact, giving you long-term archival data and a basis for restoration. If the structure is damaged, this data lets you restore its original shape.
What is Scan to BIM?
Scan to BIM is the process of using point cloud data from a laser scanner to build a Building Information Model (BIM) that reflects the actual as-built condition. The model makes management, renovation and restoration planning more accurate.
How is a long-range laser scanner different from a handheld scanner?
A long-range laser scanner sits on a tripod and captures large spaces such as buildings, facades and interiors over long distances. A handheld scanner suits smaller objects that need high detail, such as statues, reliefs and architectural ornaments.
Can 3D scanning be used on historic sites in Vietnam?
Yes. 3D scanning is well suited to digitizing communal houses, pagodas, worship statues and museum artifacts in Vietnam. Digital data helps with archiving, online display and restoration when needed.
Can 2D drawings be made from scan data?
Yes. Scan data can be built into a 3D model, then floor plans, elevations and sections can be exported at the required scale. For buildings with complex architecture, this is faster and more accurate than manual surveying.
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