| # xBD Damage Inventory QA Dataset |
|
|
| ## Overview |
| A question-answering dataset for building damage assessment |
| from post-disaster satellite imagery, built on the |
| [xBD / xView2](https://xview2.org) dataset. |
|
|
| ## Dataset Statistics |
| - 300 scenes selected across 5 damage buckets |
| - 1,656 QA samples covering 8 question templates |
| - 100% validation pass rate |
| - Disaster types: Wind, Flooding, Fire, Tsunami, Volcano, Earthquake |
|
|
| ## QA Templates |
| | Template | Description | Difficulty | |
| |----------|-------------|------------| |
| | XBD-Q1 | Full damage inventory report | Medium | |
| | XBD-Q2 | Worst quadrant by severe area | Medium | |
| | XBD-Q3 | Highest severity 4×4 cell | Hard | |
| | XBD-Q4 | Cross-scene comparison | Hard | |
| | XBD-Q5 | Severe polygon filter + area | Easy | |
| | XBD-Q6 | Event-level severity ranking | Hard | |
| | XBD-Q7 | Spatial dispersion analysis | Medium | |
| | XBD-Q8 | Full scene change summary | Hard | |
|
|
| ## Splits |
| | Split | Samples | |
| |-------|---------| |
| | Train | 1,212 | |
| | Val | 203 | |
| | Test | 241 | |
|
|
| ## Damage Buckets |
| | Bucket | Scenes | |
| |--------|--------| |
| | no-low-damage | 50 | |
| | minor-moderate | 50 | |
| | major-heavy | 70 | |
| | destroyed-heavy | 70 | |
| | mixed-severe | 60 | |
|
|
| ## Area Computation |
| All footprint areas computed as: |
| `area_m2 = shapely_polygon.area (px²) × GSD²` |
| GSD sourced from metadata.gsd in post-disaster JSON. |
| lng_lat polygons used for visualization only. |
| |
| ## Validation |
| Every QA sample independently validated by recomputing |
| ground truth from raw source JSON files. |
| Pass rate: 100% (1,656 / 1,656) |
