---
license: cc-by-4.0
task_categories:
- object-detection
tags:
- remote-sensing
- point-cloud
- building-footprint
- geospatial
- estonia
pretty_name: PCFootprint
size_categories:
- 10K<n<100K
---

# PCFootprint: A Large-scale Benchmark for Vectorized Building Footprint Extraction from ALS Point Clouds

PCFootprint introduces the first extensive, open-source benchmark specifically engineered for the vectorized extraction of building footprints from ALS point clouds. Sourced from the Estonian Land and Spatial Development Board, the dataset spans a vast geographic extent of 540.67 km², comprising 33,000 standardized tiles and 227,264 meticulously annotated building instances across diverse urban and rural landscapes.

## 📊 Dataset Specifications

The detailed specifications of the PCFootprint dataset are summarized below:

| Property | Details |
| :--- | :--- |
| **Subsets** | Mainland, Islands |
| **Data Type** | ALS Point Cloud |
| **Annotation Format** | Vectorized Polygon |
| **Accessibility** | Open-source |
| **Point Spacing [m]** | 0.22 – 1.09 |
| **Tile Size [m]** | 128 × 128 |
| **Total Tiles** | 33,000 |
| **Building Instances** | 227,264 |
| **Coverage [km²]** | 540.67 |
---

## 📂 Data Structure

The dataset is organized into two primary subsets representing different geographic characteristics of Estonia:

```text
PCFootprint/
├── Mainland/
│   ├── pointcloud/    # Point cloud data (e.g., .laz)
│   └── footprint/     # Vectorized footprint annotations (e.g., .json)
└── Islands/
    ├── pointcloud/
    └── footprint/
```
---

## ⚖️ License & Acknowledgement

### Dataset License

The PCFootprint dataset is licensed under the **Creative Commons Attribution 4.0 International (CC BY 4.0)**.

### Data Origin & Source Attribution

The development of this dataset was made possible through the open data provided by the **Republic of Estonia Land and Spatial Development Board**. We gratefully acknowledge the following data sources used in the creation of PCFootprint:

* **Elevation / Raw LiDAR Data:** (2021-2024)
* **Administrative Units / County Data:** (2025)
* **Topographic Database (ETAK) / Buildings:** (2021-2024)

All original data are used in accordance with the [Estonian Land Board Open Data Licence (01.01.2025)](https://geoportaal.maaruum.ee/docs/Avaandmed/ETAK_open_data_licence.pdf).