Accelerating Civil Plan Approvals with AI-Based Drawing Interpretation
Read how Brainy Neurals helped a government planning authority transform its plan approval process by deploying AI to analyse architectural drawings, extract critical data, and accelerate infrastructure development approvals with enhanced precision and efficiency.
Industry- Civil Industry – Urban Development – Government Planning Authorities
Business Impact
- Reduced manual effort and review time, accelerating plan approvals
- Improved accuracy in plot boundary detection and area calculations
- Enabled scalable, automated workflows for regional planning departments
- Enhanced consistency and eliminated approval bottlenecks
Problem
Approval authorities faced growing delays due to the manual review of thousands of architectural site plans. Tasks like identifying plot boundaries, detecting symbols, extracting annotations, and calculating plot areas were time-consuming and error-prone, slowing down infrastructure projects and increasing operational workload.
Challenges
- Distinguishing curved or irrelevant lines from actual plot boundaries in complex drawings
- Ensuring accurate extraction of symbols, legends, and annotations despite layout variations
- Maintaining high precision in area calculations across diverse plan formats
Solution
Brainy Neurals developed an AI-driven solution combining computer vision and OCR techniques to automate the civil site plan review process. The system:
- Detected plots, legends, and symbols using trained computer vision models
- Segmented plot boundaries for isolated analysis
- Applied OCR to extract critical annotations, plan numbers, and IDs
- Calculated plot areas accurately through automated measurement algorithms
The framework was designed to handle high-volume drawings with diverse symbols and layouts, and a scalable architecture enabled adoption across multiple planning departments.
Technologies
Computer Vision | Deep Learning | OCR | Segmentation Algorithms | Python | TensorFlow | PyTorch | OpenCV | Tesseract OCR
Results
- Automated the entire drawing extraction and review workflow
- Reduced approval timelines by eliminating manual bottlenecks
- Improved precision and consistency in plan assessments
- Enabled planning authorities to accelerate infrastructure development with confidence
