Datasets:
File size: 2,745 Bytes
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license: cc-by-4.0
configs:
- config_name: default
data_files:
- split: train
path: data/train-*
- split: validation
path: data/validation-*
- split: test
path: data/test-*
dataset_info:
features:
- name: image_id
dtype: string
- name: image_before
dtype: image
- name: image_after
dtype: image
- name: label
dtype: image
- name: dep
dtype: string
- name: epsg
dtype: int32
- name: patch_size
list: int32
- name: patch_bounds
dtype: string
- name: year_before
dtype: int32
- name: year_after
dtype: int32
splits:
- name: train
num_bytes: 19237579701
num_examples: 25908
- name: validation
num_bytes: 778303470
num_examples: 984
- name: test
num_bytes: 771375873
num_examples: 979
download_size: 20780292545
dataset_size: 20787259044
task_categories:
- mask-generation
- image-segmentation
tags:
- Geospatial
- Remote Sensing
- Building Change Detection
size_categories:
- 10K<n<100K
---
# FOTBCD-Binary
A large-scale building change detection benchmark from French orthophotos and topographic data.
## Dataset Description
| Property | Value |
|----------|-------|
| **Departments** | 28 (25 train / 3 eval) |
| **Image pairs** | ~28k |
| **Patch size** | 512×512 |
| **Resolution** | 0.2m |
| **Annotation** | Binary mask |
## Splits
| Split | Examples |
|-------|----------|
| train | ~26k |
| val | ~1k |
| test | ~1k |
## Features
| Field | Type | Description |
|-------|------|-------------|
| `image_id` | string | Unique identifier |
| `image_before` | Image | Before image (RGB) |
| `image_after` | Image | After image (RGB) |
| `label` | Image | Binary mask (0=unchanged, 255=changed) |
| `dep` | string | French department code |
| `epsg` | int | Coordinate reference system |
| `patch_bounds` | string | Geographic bounds (JSON) |
| `year_before` | int | Year of before image |
| `year_after` | int | Year of after image |
## Usage
```python
from datasets import load_dataset
ds = load_dataset("retgenai/FOTBCD-Binary")
example = ds["train"][0]
example["image_before"].show()
example["image_after"].show()
example["label"].show()
```
## License
- **Source**: BD ORTHO / BD TOPO by IGN under [Licence Ouverte 2.0](https://alliance.numerique.gouv.fr/licence-ouverte-open-licence/)
## Citation
If you use FOTBCD in your research, please cite our paper:
```bibtex
@misc{moubane2026fotbcd,
title={FOTBCD: A Large-Scale Building Change Detection Benchmark from French Orthophotos and Topographic Data},
author={Abdelrrahman Moubane},
year={2026},
eprint={2601.22596},
archivePrefix={arXiv},
primaryClass={cs.CV},
url={https://arxiv.org/abs/2601.22596},
}
``` |