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license: apache-2.0
library_name: ultralytics
pipeline_tag: object-detection
tags:
- yolo
- yolo11
- object-detection
- blueprint
- floorplan
- architecture
- construction
- legend
- document-layout
- cad
---
# GreenMap/yolo11x-blueprint-legend-detector
## Overview
YOLO11x model trained to detect structural elements inside blueprint legends on architectural and construction drawings.
- Detects legend symbols (hatch patterns and graphical symbols).
- Detects legend descriptions.
- Detects complete legend rows.
- Detects legend continuation blocks.
- Trained on architectural floor plans and construction drawings.
## Classes
| ID | Class | Purpose |
|----|---------------------------|---------------------------------------------------------------|
| 0 | legend_symbol | Graphical symbol or hatch pattern representing a construction element or material. |
| 1 | legend_description | Text description corresponding to a legend symbol. |
| 2 | legend_row | Complete legend entry containing a symbol and its associated description. |
| 3 | legend_continuation_block | A block containing the continuous legend elements. |
## Training Metrics
## Validation Metrics
| Class | Images | Instances | Precision | Recall | mAP50 | mAP50-95 |
|-------|--------|-----------|-----------|--------|-------|----------|
| all | 62 | 2407 | 0.896 | 0.873 | 0.895 | 0.677 |
| legend_symbol | 62 | 802 | 0.977 | 0.968 | 0.975 | 0.885 |
| legend_description | 62 | 779 | 0.966 | 0.950 | 0.973 | 0.750 |
| legend_row | 62 | 762 | 0.927 | 0.950 | 0.967 | 0.716 |
| continuous_elements_block | 44 | 64 | 0.714 | 0.625 | 0.665 | 0.357 |
## Training
- Base model: YOLO11x
- Task: Object Detection
- Input size: 1472 × 1472
- Framework: Ultralytics YOLO |