

Feiyan captures built heritage structures and surrounding cultural landscapes in millimeter-accurate detail. Using terrestrial laser scanning (TLS) and aerial photogrammetry, we generate high-fidelity 3D reality models, true orthophotos, and detailed elevation maps. These outputs are vital for Historic Building Information Modeling (HBIM), structural condition assessment, decay/displacement monitoring, precise restoration planning, and creating immersive digital archives for education and virtual access.
Built on the Swift4D Platform, our framework integrates millimeter-level acquisition, high-fidelity modeling, and multi-scenario applications:
Air-Ground Millimeter Acquisition: Y-1 UAVs with oblique cameras and LiDAR for aerial coverage; TLS for architectural details (carvings, columns, cracks). Data fusion achieves millimeter accuracy.
Swift4D High-Fidelity Modeling: Automated generation of textured 3D models, true orthophotos, and elevation maps, accurately preserving geometry and material characteristics.

SwiftAI Change Detection & Damage Identification: Multi-temporal model comparison automatically identifies crack propagation, displacement, settlement, and weathering, producing quantitative reports.
HBIM & Digital Archive Integration: Linking 3D models with historical documents and maintenance records to create structured HBIM, supporting virtual access and educational displays.
Historic Building Information Modeling (HBIM)
Structural condition assessment & damage monitoring (cracks, displacement, weathering)
Precision restoration design & construction guidance
Immersive digital archives (virtual museums, online tours)

Cultural heritage education & public outreach

Millimeter accuracy meets the highest demands of conservation and research.
Non-contact recording avoids secondary damage to fragile heritage.
Full lifecycle management through multi-temporal data for preventive conservation.
Perpetual digital heritage preserves complete 3D records before irreversible loss, enabling remote research and virtual visits.