3D Building Model Generation from 2D Drawing Symbols
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Solution Overview
Problem
Construction projects face inefficiencies in organizing and navigating voluminous 2D building drawings, which are not effectively represented in 3D space, leading to difficulties in visualization and comparison among stakeholders.
Innovation Solution
A computer-implemented method and system that automatically aligns 2D building drawings in a 3D space by recognizing symbols and metadata, linking corresponding elements, and generating a unified 3D design model, allowing for seamless comparison and visualization without the need for complex alignment processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If 2D building drawings are displayed in traditional 2D format, then the drawings can be created and stored easily, but the organization, navigation, and visualization efficiency deteriorates
Solution Approach 1:
The patent transforms 2D building drawings into a 3D virtual environment by detecting symbols (e.g., north arrows, elevation markers) and metadata to automatically generate spatial relationships. This dimensional transformation allows users to navigate and evaluate drawings through 3D navigation controls, significantly improving visualization and organization while maintaining the original 2D drawing data integrity.
2Loss of information
If multiple 2D building drawings are organized in a 3D space automatically, then the visualization and comparison capability improves, but the processing complexity increases
Solution Approach 1:
The system performs self-service by automatically detecting symbols and metadata within 2D drawings to infer spatial relationships and generate 3D positioning information without manual intervention. The automatic alignment process extracts orientation data from north arrows, elevation data from section markers, and correlation data from repeated symbols across drawings, eliminating the need for complex manual alignment procedures.
Solution Approach 2:
The patent applies preliminary action by pre-processing 2D drawings to detect and extract symbolic information before 3D generation. Symbols such as north arrows, elevation markers, and section indicators are identified and their spatial meaning is interpreted in advance, allowing the system to automatically position and orient drawings correctly in 3D space without requiring post-processing adjustments.
3Measurement precision
If 2D building drawings are aligned manually in 3D space, then the alignment precision can be controlled, but the time consumption and operational complexity increases
Solution Approach 1:
The patent replaces manual mechanical alignment operations with automated computer vision and image processing systems. Optical character recognition (OCR) and symbol detection algorithms automatically extract spatial information from drawings, while computational geometry algorithms calculate precise 3D positioning and orientation. This substitution maintains alignment precision while eliminating time-consuming manual operations.
Data Source
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AI summary
Systems and methods are disclosed for displaying 2D building drawings in a 3D space. One method comprises receiving 2D building drawings from a device, the 2D building drawings include symbols and/or metadata, and the symbols indicate a correlation between an elevation, a floorplan, and a section of the 2D building drawings. The plurality of 2D building drawings is processed to detect the correlation between the symbols and the metadata. A selection is received of a first 2D building drawing from the 2D building drawings and/or a first symbol in the first 2D building drawing. A second 2D building drawing is retrieved from the 2D building drawings based on the correlation between the first symbol and a second symbol of the second 2D building drawing. A 3D design model is generated by aligning the first 2D building drawing and the second 2D building drawing in the 3D space.