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README.md
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license: cc-by-4.0
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---
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license: cc-by-4.0
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task_categories:
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- object-detection
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- segmentation
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tags:
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- remote-sensing
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- point-cloud
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- building-footprint
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- geospatial
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- estonia
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pretty_name: PCFootprint
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size_categories:
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- 10K<n<100K
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---
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# PCFootprint: A Large-scale Benchmark for Vectorized Building Footprint Extraction from ALS Point Clouds
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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.
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## 📊 Dataset Specifications
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The detailed specifications of the PCFootprint dataset are summarized below:
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| Property | Details |
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| :--- | :--- |
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| **Subsets** | Mainland, Islands |
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| **Data Type** | ALS Point Cloud |
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| **Annotation Format** | Vectorized Polygon |
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| **Accessibility** | Open-source |
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| **Point Spacing [m]** | 0.22 – 1.09 |
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| **Tile Size [m]** | 128 × 128 |
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| **Total Tiles** | 33,000 |
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| **Building Instances** | 227,264 |
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| **Coverage [km²]** | 540.67 |
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---
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## 📂 Data Structure
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The dataset is organized into two primary subsets representing different geographic characteristics of Estonia:
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```text
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PCFootprint/
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├── Mainland/
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│ ├── tiles/ # Point cloud data (e.g., .las / .laz)
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│ └── labels/ # Vectorized annotations (e.g., .geojson / .poly)
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└── Islands/
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├── tiles/
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└── labels/
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---
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## ⚖️ License & Attribution
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### Dataset License
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This dataset is licensed under the **Creative Commons Attribution 4.0 International (CC BY 4.0)**.
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### Mandatory Attribution (Estonian Land Board)
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As this dataset is derived from the official data of the Republic of Estonia, users **must** include the following attribution in any publications or redistributions:
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> **Source Data:** Elevation data / ALS Point Clouds 2021-2024, Republic of Estonia Land and Spatial Development Board.
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> **Original License:** [Estonian Land Board Open Data Licence (01.01.2025)](https://geoportaal.maaruum.ee/opendata-licence)
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