README.md

---
license: etalab-2.0
pretty_name: FRACTAL-IRGB
size_categories:
- 100K<n<1M
task_categories:
- other
tags:
- IGN
- Environement
- Earth Observation
- Aerial Lidar
- Point Cloud Segmentation
- 3D Scene Understanding
---

This repo contains the orthoimageries used to colorize point clouds in the [FRACTAL](https://huggingface.co/datasets/IGNF/FRACTAL) semantic segmentation dataset.

They are provided as is, in their original size (50 x 50 m), spatial resolution (0.2 m, i.e. 250 x 250 pixels) and band order (near-infrared, red, green, blue).

They might be used for quick visual inspections of the FRACTAL's point clouds, or for more advanced use such as multimodal (2D-3D) deep learning training.

Note:
- The files are ordered by filename. Inspecting a single zip archive is therefore not representative of the whole dataset.
- The band order does not play nice with standard image softwares. Consider reordering band order and disabling the use of transparency in a GIS software like [QGis](https://www.qgis.org/fr/site/).