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GroundedSAM for GaussianOcc

To generate per-pixel semantic labels from 2D image training data of DDAD dataset for our GaussianOcc, we provide the generation code with reference to GroundedSAM_OccNeRF and Grounded-Segment-Anything.

Installation

You can also reference GroundedSAM_OccNeRF or Grounded-Segment-Anything to prepare the environment.

The code requires python>=3.8, as well as pytorch>=1.7 and torchvision>=0.8. Please follow the instructions here to install both PyTorch and TorchVision dependencies. Installing both PyTorch and TorchVision with CUDA support is strongly recommended.

Prepare environment:

git clone git@github.com:Fang2896/GroundedSAM_GaussianOcc.git
cd GroundedSAM_GaussianOcc/
pip install -r requirements.txt

Install Segment Anything:

python -m pip install -e segment_anything

Install GroundingDINO:

python -m pip install -e GroundingDINO

Other dependency

pip install diffusers transformers accelerate scipy safetensors

Run the code

Step1: Download the pretrained weights

Prepare weight for Segment Anything:

# Place it under GroundedSAM_GaussianOcc/
wget https://dl.fbaipublicfiles.com/segment_anything/sam_vit_h_4b8939.pth 

Step2: Prepare the models

You can download the models locally in advance or use the huggingface api to load the model

Load models from local

You can download the GroundiongDINO model and BERT model from 百度云盘(BaiduPan) or Google Driver. Then unzip the file under GroundedSAM_GaussianOcc/

unzip models--ShilongLiu--GroundingDINO.zip
unzip models--bert-base-uncased.zip

Load models from Hugging Face

You can also change the function load_model_hf() in groundedsam_generate_sem_demo.py and groundedsam_generate_sem_ddad.py to the original code in Grounded-Segment-Anything to load GroundingDINO from Hugging Face. You should also change the function get_pretrained_language_model() in GroundingDINO/util/get_tokenlizer.py back to the code in Grounded-Segment-Anything to load BERT

Step3: Generate semantic labels

Generate semantic labels on DDAD trainset

Prepare data

If you are using GroundedSAM_GaussianOcc individually, please link your DDAD dataset path to the GroundedSAM_GaussianOcc/ folder and download metadata according to GaussianOcc, then modify the data_path in groundedsam_generate_sem_ddad.py.

ln -s DATA_PATH ./data

We use groundedsam_generate_sem_ddad.py to generate semantic labels of DDAD dataset for GaussianOcc self-supervised occupancy learning. Modify sava_path in groundedsam_generate_sem_ddad.py to determine where to save the results. Running shell script is run.sh, you may need to modify the config parameter to your ddad_volume.txt location and make sure the python script is running under GroundedSAM_GaussianOcc folder (i.e. modify cd your_folder_path/GaussianOcc in run.sh)

bash run.sh 

Bibtex

If this work is helpful for your research, please consider citing the following BibTeX entry.

@article{gan2024gaussianocc,
  title={Gaussianocc: Fully self-supervised and efficient 3d occupancy estimation with gaussian splatting},
  author={Gan, Wanshui and Liu, Fang and Xu, Hongbin and Mo, Ningkai and Yokoya, Naoto},
  journal={arXiv preprint arXiv:2408.11447},
  year={2024}
}