RoGS: Large Scale Road Surface Reconstruction based on 2D Gaussian Splatting

Setup

Tested with Pytorch 1.12.1 and CUDA 11.6 and Pytoch3d 0.7.1

Clone the repo.

git clone https://github.com/fzhiheng/RoGS.git

Environment setup

conda create -n rogs python=3.7 -y
conda activate rogs
pip install torch==1.12.1+cu116 torchvision==0.13.1+cu116 torchaudio==0.12.1 --extra-index-url https://download.pytorch.org/whl/cu116
pip install addict PyYAML tqdm scipy pytz plyfile opencv-python pyrotation pyquaternion nuscenes-devkit

Install pytorch3d.

Install the diff-gaussian-rasterization with orthographic camera

git clone --recursive https://github.com/fzhiheng/diff-gs-depth-alpha.git && cd diff-gs-depth-alpha
python setup.py install
cd ..

Install the diff-gaussian-rasterization to optimize semantic

In order to optimize the semantic and try not to lose performance (there is some performance loss in dynamically allocating memory when the channel does not need to be specified). We still use the library above. Only a few changes are needed.
```
git clone --recursive https://github.com/fzhiheng/diff-gs-depth-alpha.git diff-gs-label && cd diff-gs-label
mv diff_gaussian_rasterization diff-gs-label

# follow the instructions below to modify the file

python setup.py install
```
Set NUM_CHANNELS in file cuda_rasterizer/config.h to num_class ( 7 for nuScenes and 5 for KITTI) and change all diff_gaussian_rasterization in setup.py to diff-gs-label. On the dataset KITTI, we changed the name of the library to diff-gs-label2 . In practice, you can set NUM_CHANNELS according to the category of your semantic segmentation and change the name of the library.

Dataset

nuScenes

In configs/local_nusc.yaml and configs/local_nusc_mini.yaml

base_dir: Put official nuScenes here, e.g. {base_dir}/v1.0-trainval
image_dir: Put segmentation results here. We use the segmentation results provided by Rome. You can download here.

road_gt_dir：Put ground truth here. To produce ground truth:

python -m preprocess.process --nusc_root /dataset/nuScenes/v1.0-mini --seg_root /dataset/nuScenes/nuScenes_clip ---save_root /dataset/nuScenes/ -v mini --scene_names scene-0655

KITTI

In configs/local_kitti.yaml

base_dir: Put official kitti odometry dataset here, e.g. {base_dir}/sequences
image_dir: Put segmentation results here. We use the segmentation results provided by Rome. You can download here.
pose_dir: Put kitti odometry pose here, e.g. {pose_dir}/dataset/poses

Optimization

python train.py --config configs/local_nusc_mini.yaml

Citation

@article{feng2024rogs,
  title={RoGS: Large Scale Road Surface Reconstruction based on 2D Gaussian Splatting},
  author={Feng, Zhiheng and Wu, Wenhua and Wang, Hesheng},
  journal={arXiv preprint arXiv:2405.14342},
  year={2024}
}

Acknowledgements

This project largely references 3D Gaussian Splatting and RoMe. Thanks for their amazing works!

xie-design/RoGS