A method, medium and device for boundary fusion of a BIM model and a photogrammetry model
By performing coordinate transformation, spatial inclusion detection, and texture UV mapping between the BIM model and the oblique photogrammetry model, the problems of poor top fitting, bottom elevation deviation, and visual jumps when switching between multiple LOD levels in boundary fusion were solved, achieving a high-precision model fusion effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- POWERCHINA ZHONGNAN ENG
- Filing Date
- 2026-06-16
- Publication Date
- 2026-07-17
AI Technical Summary
Existing methods for fusion of BIM models and oblique photogrammetry models suffer from problems such as poor top alignment, bottom elevation deviation, visual abruptness when switching between multiple LOD levels, and poor texture effects on stretched surfaces.
By analyzing the source coordinate system of the oblique photogrammetry model and the target coordinate system of the BIM model, the three-dimensional boundary point set is extracted. Using spatial inclusion detection and centroid coordinate interpolation algorithms, the lowest effective elevation of the BIM model surface is accurately selected. Combined with geometric difference set operation and mesh reconstruction, a continuous side-stretched mesh is constructed, and texture UV coordinate mapping is performed.
It achieves high-precision 3D spatial alignment and geometric fit, ensuring visual consistency, eliminating seams and holes between models, and improving visualization quality and analysis accuracy.
Smart Images
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