HSSD: Habitat Synthetic Scene Dataset

This repository serves as a guide for training and evaluating ObjectNav agents in HSSD, AI2THOR, and HM3D scene datasets using Habitat, and reproducing experiments provided in the HSSD paper.

Habitat Synthetic Scenes Dataset (HSSD): An Analysis of 3D Scene Scale and Realism Tradeoffs for ObjectGoal Navigation

teaser_small.mp4

Table of contents

• About
• Pre-requisites
• Scene datasets
  • HSSD
  • ProcTHOR-HAB
  • HM3D-semantics
• ObjectNav episode datasets
• Training and evaluation setup
• Training and evaluation commands

About

We contribute the Habitat Synthetic Scenes Dataset, a dataset of 211 high-quality 3D scenes, and use it to test navigation agent generalization to realistic 3D environments. Our dataset represents real interiors and contains a diverse set of 18,656 models of real-world objects. We investigate the impact of synthetic 3D scene dataset scale and realism on the task of training embodied agents to find and navigate to objects (ObjectGoal navigation).

Pre-requisites

To load HSSD and other scene datasets in simulation and train and evlaute embodied agents in them, you will need to install:

1. Habitat-sim (v0.2.5)

conda install habitat-sim=0.2.5 -c conda-forge -c aihabitat

2. Habitat-lab (v0.2.5)

git clone --branch v0.2.5 https://github.com/facebookresearch/habitat-lab.git
cd habitat-lab
pip install -e habitat-lab  # install habitat_lab
pip install -e habitat-baselines  # install habitat_lab

Note: Even though the HSSD scene dataset is compatible with the latest habitat-sim and habitat-lab versions, the results in the paper were reported using v0.2.5 branch of both habitat libraries.

Scene datasets

HSSD:

HSSD has been hosted on HuggingFace at huggingface.co/datasets/hssd/hssd-hab. Here, you can preview the dataset and find information about the folder structure and instructions on getting started.

For conveniently running subsequent training and evaluation experiments, you can clone the dataset to the following path in your habitat-lab installation:

cd /path/to/habitat-lab
git clone https://huggingface.co/datasets/hssd/hssd-hab data/scene_datasets/hssd-hab

(Optional) ProcTHOR-HAB:

You can find Habitat-compatible AI2THOR scene datasets (like ProcTHOR, iTHOR, and RoboTHOR), here: huggingface.co/datasets/hssd/ai2thor-hab.

For conveniently running subsequent training and evaluation experiments, you can clone the dataset to the following path in your habitat-lab installation:

cd /path/to/habitat-lab
git clone https://huggingface.co/datasets/hssd/ai2thor-hab data/scene_datasets/ai2thor-hab

(Optional) HM3D-semantics:

To download the HM3D scene dataset, refer to the instructions provided here.

ObjectNav episode datasets

To download episode datasets for HSSD, ProcTHOR-HAB, and HM3D-semantics, you will need to fetch the zipped files from the provided links and extract them to the corresponding paths specified below.

Task	Scenes	Link	Extract path	Config to use	Archive size
ObjectNav	HSSD-hab	objectnav_hssd-hab_v0.2.5.zip	data/datasets/objectnav/hssd-hab	datasets/objectnav/hssd-hab.yaml	24 MB
ObjectNav	ProcTHOR-hab	objectnav_procthor-hab.zip	data/datasets/objectnav/procthor-hab	datasets/objectnav/procthor-hab.yaml	755 MB
ObjectNav	HM3DSem-v0.2	objectnav_hm3d_v2_locobot_multifloor.zip	data/datasets/objectnav/hm3d/v2/	datasets/objectnav/hm3d_v2.yaml	245 MB

Training and evaluation setup

Now that you have habitat installed, and the scene and episode datasets downloaded, you are all set to train and evaluate ObjectNav agents in simulation.

However, to reproduce specific experiments from the HSSD paper – with the specified agent embodiment, camera sensor resolution, and a CLIP visual encoder backbone – you will need Habitat to use the task and training configuration files provided in this repository.

For your convenience, you can run the script below to conveniently move the necessary config files to appropriate folders in your habitat-lab installation directory. This will make it significantly easier to invoke train and eval commands using Habitat.

python setup.py --hab-lab-path /path/to/habitat-lab

Training and evaluation commands

Change directory to habitat-lab for successfuly running subsequent commands.

cd /path/to/habitat-lab

Pre-train

You can pre-train an ObjectNav agent on HSSD, ProcTHOR-hab, or HM3D, using any variant of the following command:

python -u -m habitat_baselines.run --config-name=objectnav/hssd-200_ver_clip_{hssd-hab, procthor-hab, hm3d}.yaml

You can find more information about training runs through checkpoints and tensorboard logs saved here: /path/to/habitat-lab/data/training/objectnav.

Note: The above script will run training on 1 GPU. However, all the training experiments in the paper used 4 A40 GPUs and 16 CPU cores per GPU on a SLURM-based compute cluster. To schedule a similar training run, you can start with the sample batch script provided in the scripts/slurm directory of this repository – and modify it as per your requirement.

Evaluate

You can evaluate trained models on val datasets as such:

python -u -m habitat_baselines.run --config-name=objectnav/hssd-200_ver_clip_{hssd-hab, procthor-hab, hm3d}.yaml habitat_baselines.evaluate=True

This will run evaluation using all training checkpoints. Eval performance metrics can also be visualized through tensorboard logs saved in the path mentioned above. To also save videos of episodes of trained agents, you can add modify the video_option flag in the --exp-config file passed above as such:

video_option: ["disk"]

Zero-shot evaluate on HM3D-semantics

To zero-shot evaluate models pre-trained above on HM3D-sem's val datasets, update the eval_ckpt_path_dir variable in the config files passed in the command below:

python -u -m habitat_baselines.run --config-name=objectnav/hssd-200_eval_zeroshot_{hssd-hab, procthor-hab}_to_hm3d.yaml habitat_baselines.evaluate=True

You can download weights for an HSSD-pretrained policy here.

Fine-tune on HM3D-semantics

To fine-tune models pre-trained on HSSD or ProcTHOR on the HM3D-sem training dataset:

• Update config file habitat-baselines/habitat_baselines/config/objectnav/hssd-200_hm3d_finetune_ver_clip_{hssd-hab, procthor-hab}.yaml to specify path to pre-trained weights:

  pretrained_weights: /path/to/weights_file
  

• Finetune by running:

  python -u -m habitat_baselines.run --config-name=objectnav/hssd-200_hm3d_finetune_ver_clip_{hssd-hab, procthor-hab}.yaml
  

• Evaluate fine-tuned models by running:

  python -u -m habitat_baselines.run --config-name=objectnav/hssd-200_hm3d_finetune_ver_clip_{hssd-hab, procthor-hab}.yaml habitat_baselines.evaluate=True habitat_baselines.load_resume_state_config=False
  

Citing HSSD

If you use our dataset or find our work useful, please consider citing:

@article{khanna2023hssd,
    author={{Khanna*}, Mukul and {Mao*}, Yongsen and Jiang, Hanxiao and Haresh, Sanjay and Shacklett, Brennan and Batra, Dhruv and Clegg, Alexander and Undersander, Eric and Chang, Angel X. and Savva, Manolis},
    title={{Habitat Synthetic Scenes Dataset (HSSD-200): An Analysis of 3D Scene Scale and Realism Tradeoffs for ObjectGoal Navigation}},
    journal={arXiv preprint},
    year={2023},
    eprint={2306.11290},
    archivePrefix={arXiv},
    primaryClass={cs.CV}
}