3D Scan Data Component Segmentation for BIM Modeling
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Solution Overview
Problem
Current 3D scanning technologies generate building data that is not divided into components, leading to incomplete representation of structures, especially for buildings with complex components like cultural heritage sites, where internal structures and variations in size and shape are not accurately captured.
Innovation Solution
An apparatus and method that utilize 3D component model data to adjust and divide 3D scan data into units of construction components, using a processor with position adjustment, optimization, and division units to align and sample data, ensuring accurate representation of both exterior and interior structures while maintaining the original shape and appearance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If 3D scan technology is used to generate building data, then the data coverage and completeness of the building exterior is improved, but the data is not divided into components making it difficult to represent internal structures and component variations
Solution Approach 1:
The patent applies segmentation by dividing the overall 3D scan data into individual building components based on 2D construction drawings. The system automatically segments walls, floors, ceilings, and other components by matching scan data with drawing-based component definitions, transforming undifferentiated 3D point clouds into structured component-level data for BIM modeling.
Solution Approach 2:
The patent uses 2D construction drawings as an intermediary to bridge the gap between 3D scan data and component-level information. The drawings serve as a mediator that provides component boundaries, types, and specifications, enabling the system to interpret raw scan data and automatically generate structured component models without requiring complex direct 3D analysis.
2Measurement precision
If traditional 3D scanning is used, then the exterior appearance is captured, but internal structures and component variations are not accurately represented
Solution Approach 1:
The patent applies preliminary action by pre-defining building components and their properties based on 2D construction drawings before processing the 3D scan data. The system prepares component templates, boundaries, and specifications in advance, allowing rapid automatic classification and modeling of scan data against these pre-established definitions, significantly reducing processing time while improving accuracy.
3Ease of operation
If 3D scan data is used directly for BIM modeling, then the workflow is simplified, but the component-level detail and construction accuracy are insufficient
Solution Approach 1:
The patent implements self-service by enabling the system to automatically generate component-level BIM models from 3D scan data using 2D drawing-based definitions. The automated workflow eliminates manual modeling efforts while ensuring consistent application of component standards, specifications, and construction details, achieving both operational efficiency and modeling precision simultaneously.
Data Source
AI summary
An apparatus and method for editing three-dimensional (3D) building data. The apparatus for editing the 3D building data includes an input unit configured to obtain 3D scan data of a building, and a processor configured to divide the obtained 3D scan data of the building in units of construction components.