Automatic 2D-3D Image Alignment via Barcode Comparison
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Solution Overview
Problem
The current disconnect between Building Information Models (BIM) and two-dimensional (2D) design drawings in the AEC industry leads to inefficiencies during design reviews, as manual reference techniques are required to cross-reference between these disparate information sources.
Innovation Solution
A computer-implemented method and system for automatically aligning a 2D design image with a 2D projection image of a 3D design model by generating projection and drawing barcodes, allowing for the alignment of the two images through barcode comparison.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual reference techniques are used to cross-reference between BIM and 2D drawings, then data accuracy can be maintained, but time consumption and operational efficiency deteriorate
Solution Approach 1:
The patent generates a 2D projection image from the 3D BIM model and creates barcodes representing design elements. This copying approach allows automatic alignment and reference between BIM and 2D drawings without manual intervention, maintaining data accuracy while significantly reducing time consumption.
Solution Approach 2:
The patent replaces manual reference techniques with an automated image processing system. The system uses barcode generation, image alignment algorithms, and computer vision techniques to automatically cross-reference design elements between BIM and 2D drawings, eliminating manual operations while preserving data reliability.
2Device complexity
If manual reference techniques are used to cross-reference between BIM and 2D drawings, then system complexity can be kept simple, but productivity and operational efficiency deteriorate
Solution Approach 1:
By creating 2D projection images and barcodes from the 3D BIM model, the system enables automated processing without requiring complex manual procedures. The copying mechanism simplifies the interface between BIM and 2D drawings while dramatically improving productivity through automatic alignment and reference.
Solution Approach 2:
The system performs self-alignment by automatically comparing barcodes from the 2D design drawing and 2D projection image, and adjusting the projection image to match the design drawing without manual intervention. This self-service capability enhances productivity while keeping the system relatively simple.
3Measurement precision
If automatic alignment through barcode comparison is implemented, then alignment precision and data transfer efficiency improve, but device complexity and processing requirements worsen
Solution Approach 1:
The patent introduces barcodes as an intermediary element between the 3D BIM model and 2D design drawings. These barcodes encode design element information and serve as a common language for automatic alignment, achieving high precision while managing processing complexity through standardized encoding.
Solution Approach 2:
The system transforms 3D spatial coordinates and design element properties into 2D barcode parameters through projection. This parameter transformation enables precise alignment by comparing barcode data rather than directly processing complex 3D geometries, improving precision while controlling computational requirements.
Data Source
AI summary
Systems and methods are disclosed for aligning a two-dimensional (2D) design image to a 2D projection image of a three-dimensional (3D) design model. One method comprises receiving a 2D design document, the 2D design document comprising a 2D design image, and receiving a 3D design file comprising a 3D design model, the 3D design model comprising one or more design elements. The method further comprises generating a 2D projection image based on the 3D design model, the 2D projection image comprising a representation of at least a portion of the one or more design elements, generating a projection barcode based on the 2D projection image, and generating a drawing barcode based on the 2D design image. The method further comprises aligning the 2D projection image and the 2D design image by comparing the projection barcode and the drawing barcode.