Learning Language-Conditioned Deformable Object Manipulation with Graph Dynamics

Yuhong Deng, Kai Mo, Chongkun Xia, Xueqian Wang

Tsinghua University

This repository is a PyTorch implementation of the paper "Learning Language-Conditioned Deformable Object Manipulation with Graph Dynamics".

Website | ArXiv

If you find this code useful in your research, please consider citing:

@misc{language_def,
      title={Learning Language-Conditioned Deformable Object Manipulation with Graph Dynamics}, 
      author={Kai Mo and Yuhong Deng and Chongkun Xia and Xueqian Wang},
      year={2023},
      eprint={2303.01310},
      archivePrefix={arXiv},
      primaryClass={cs.RO}
}

Table of Contents

• Installation
• Generate Data
• Train
• Evaluate

Installation

This simulation environment is based on SoftGym. You can follow the instructions in SoftGym to setup the simulator.

1. Clone this repository.

2. install some packages.

  * pytorch, torchvision: `pip install torchvision` or `conda install torchvision -c pytorch`
  * torch-scatter, torch-sparse, torch-geometric (related to the version of pytorch)
  * einops: `pip install einops`
  * tqdm: `pip install tqdm`
  * yaml: `pip install PyYaml`

3. Before you use the code, you should make sure the conda environment activated(conda activate language_def) and set up the paths appropriately:

    export PYFLEXROOT=${PWD}/PyFlex
    export PYTHONPATH=${PYFLEXROOT}/bindings/build:$PYTHONPATH
    export LD_LIBRARY_PATH=${PYFLEXROOT}/external/SDL2-2.0.4/lib/x64:$LD_LIBRARY_PATH
    export CLOTH3D_PATH=${PWD}/cloth3d
   

   The provided script prepare_1.0.sh includes these commands above.

Generate Data

• Generate initial configurations:

  python generate_configs.py --cloth_type Square
  python generate_configs.py --cloth_type Rectangular
  python generate_configs.py --cloth_type Tshirt
  python generate_configs.py --cloth_type Trousers
  

  where --cloth_type specifies the cloth type (Square | Rectangular | Tshirt | Trousers). These generated initial configurations will be saved in configs/

• Generate expert demonstrations:

  python generate_demo_fold.py --task CornerFold --cloth_type Square --randomize_pose
  python generate_demo_fold.py --task TriangleFold --cloth_type Square --randomize_pose
  python generate_demo_fold.py --task StraightFold --cloth_type Rectangular --randomize_pose
  python generate_demo_fold.py --task TshirtFold --cloth_type Tshirt --randomize_pose
  python generate_demo_fold.py --task TrousersFold --cloth_type Trousers --randomize_pose
  

  where --task specifies the task type (CornerFold | TriangleFold | StraightFold | TshirtFold | TrousersFold), --random specifies setting random pose as the intial state. These generated demonstrations will be saved in raw_data.

  Demonstrator/demonstrator.py includes the scripted demonstrator by accessing the ground truth position of each particle.

Train

• establish the training set:

  python create_dataset.py --task All --n_demos 1000
  

• Set up the model, optimizer and other details in yaml files intrain/train configs/.

• Train model:

  python train.py --config_path depth_model
  python train.py --config_path depth_pre
  
  

  where --config_path specifies the yaml configuration filename in train/train configs/. The training process can be divided into two steps: train the action generator and success Classifier.

Evaluate

• Evaluate the model by running:

  python eval.py --task TrousersFold --cloth_type Trousers --model depth_model --agent_model epoch99 --predictor_model epoch99 --randomize
  
  

  The evaluation results are saved in eval/.

If you have any questions, please feel free to contact me via [email protected]