- Article
A Suitable Scan-to-BIM Process Using OS Software and Low-Cost Sensors: Trend, Solutions and Experimental Validation
- Massimiliano Pepe,
- Przemysław Klapa and
- Donato Palumbo
- + 2 authors
Open-source software is transforming visualization-oriented digital documentation and conceptual BIM by lowering financial and technical barriers, enabling broader participation in the digitalization of the AEC sector. This study develops and validates a cost-effective Scan-to-BIM workflow that combines low-cost hardware with freely available software for 3D data acquisition, processing, and modeling. Photogrammetry and SLAM-based techniques generate accurate point clouds, which, once verified against terrestrial laser scanning data, can be integrated into open-source BIM environments. The workflow leverages COLMAP for 3D reconstruction and BlenderBIM for parametric modeling, combining geometric and semantic information to produce fully interoperable models. While open-source tools offer accessibility and transparency, they require supplementary validation in precision-critical applications and may involve trade-offs in accuracy, stability, and automation compared to commercial solutions. Application to a case study shows how efficient and rapid the process is, representing the trend for the scientific community.
5 February 2026



![A typical floor plan from the 1st to the 4th floor of the URBS 1 apartment, with the bathroom layout variant on the right. Source: Ref. [23].](https://mdpi-res.com/cdn-cgi/image/w=281,h=192/https://mdpi-res.com/architecture/architecture-06-00023/article_deploy/html/images/architecture-06-00023-g001-550.jpg)



