---
license: cc-by-nc-4.0
task_categories:
- image-to-image
tags:
- 3d-mesh
- 3d-reconstruction
- shadow-removal
---



# Sunlit3D Dataset
The Sunlit3D dataset offers post-processed 3D reconstructions of buildings for shadow removal tasks. Existing 3D models with appropriate licenses were sourced from SketchFab, focusing on those with minimal shading. This was crucial, as each model was re-illuminated and the lighting baked into the texture map, providing data suitable for shadow removal.

## Dataset Viewer 
[![Button 1](https://img.shields.io/badge/Sunlit3D_Visualizer-blue)](https://potechius.com/Sunlit3D/)

Note that the texture maps have been reduced in resolution for performance reasons. To view the textured meshes at full detail, please download the dataset.

## Details
- 70 models with minimal shading were sourced from the platform Sketchfab.
- Each model has a texture map which were resized to 8192x8192 px.
- Each model were postprocessed in Blender in order to generate texture maps consisting of (1) Normal information (2) Mask information, (3) Height information, (4) Shading information, (5) Reflectance information, (6) Illuminated Reflectance information
- Note that the original mesh is considered as the reflectance information
- The reflectance and shading components of each model are available in nine different illumination settings.

<p align="center">
  <img src="https://cdn-uploads.huggingface.co/production/uploads/6331b00ab7b8e9d6e89a5dc0/8qQadPnF2wre3_eQ2Vc4_.webp" width="512">
  <br>
  <em>Figure 1: Visualization of all six texture maps.</em>
</p>

<p align="center">
  <img src="https://cdn-uploads.huggingface.co/production/uploads/6331b00ab7b8e9d6e89a5dc0/eneUMTompkHSmDUmqt0l6.webp" width="512">
  <br>
  <em>Figure 2: Visualization of all nine illumination settings.</em>
</p>


## Citation
If you utilize this dataset in your research, kindly provide a citation:
```
@inproceedings{potechius2024,
    author = {Potechius, Herbert and Essaky, Selvam and Raja, Gunasekaran and Sikora, Thomas and Knorr, Sebastian},
    title = {Enhanced Illumination Adjustment in 3D Outdoor Reconstructions via Shadow Removal through Color Transfer},
    year = {2024},
    isbn = {9798400712814},
    publisher = {Association for Computing Machinery},
    address = {New York, NY, USA},
    url = {https://doi.org/10.1145/3697294.3697308},
    doi = {10.1145/3697294.3697308},
    booktitle = {Proceedings of 21st ACM SIGGRAPH Conference on Visual Media Production},
    articleno = {2},
    numpages = {10},
    location = {London, United Kingdom},
    series = {CVMP '24}
}
```