# CONTHO: Joint Reconstruction of 3D Human and Object via Contact-Based Refinement Transformer [Hyeongjin Nam*](https://hygenie1228.simple.ink/)¹, [Daniel Sungho Jung*](https://dqj5182.github.io/)¹, [Gyeongsik Moon](https://mks0601.github.io/)², [Kyoung Mu Lee](https://cv.snu.ac.kr/index.php/~kmlee/)¹

    

¹Seoul National University, ²Codec Avatars Lab, Meta
(*Equal contribution)  [](https://creativecommons.org/licenses/by/4.0/) [](https://paperswithcode.com/sota/3d-human-reconstruction-on-behave) [](https://paperswithcode.com/sota/3d-object-reconstruction-on-behave)[](https://paperswithcode.com/sota/contact-detection-on-behave)

CVPR 2024

CONTHO jointly reconstructs 3D human and object by exploiting human-object contact as a key signal in accurate reconstruction. To this end, we integrates "3D human-object reconstruction" and "Human-object contact estimation", the two different tasks that have been separately studied in two tracks, with one unified framework.

Installation

• We recommend you to use an Anaconda virtual environment. Install PyTorch >=1.10.1 and Python >= 3.7.0. Our latest CONTHO model is tested on Python 3.9.13, PyTorch 1.10.1, CUDA 10.2.

• Setup the environment

  # Initialize conda environment
  conda create -n contho python=3.9
  conda activate contho 
  
  # Install PyTorch
  conda install pytorch==1.10.1 torchvision==0.11.2 torchaudio==0.10.1 cudatoolkit=10.2 -c pytorch
  
  # Install all remaining packages
  pip install -r requirements.txt

Quick demo

• Prepare the base_data from here and place it as ${ROOT}/data/base_data.
• Download the pre-trained checkpoint from here.
• Lastly, please run

  python main/demo.py --gpu 0 --checkpoint {CKPT_PATH}

Data

You need to follow directory structure of the data as below.

${ROOT} 
|-- data  
|   |-- base_data
|   |   |-- annotations
|   |   |-- backbone_models
|   |   |-- human_models
|   |   |-- object_models
|   |-- BEHAVE
|   |   |-- dataset.py
|   |   |-- sequences
|   |   |   |-- Date01_Sub01_backpack_back
|   |   |   |-- Date01_Sub01_backpack_hand
|   |   |   |-- ...
|   |   |   |-- Date07_Sub08_yogamat
|   |-- InterCap
|   |   |-- dataset.py
|   |   |-- sequences
|   |   |   |-- 01
|   |   |   |-- 02
|   |   |   |-- ...
|   |   |   |-- 10

• Download Data01~Data07 sequences from BEHAVE dataset to ${ROOT}/data/BEHAVE/sequences.
  (Option 1) Directly download BEHAVE dataset from their download page.
  (Option 2) Run the script below.

  scripts/download_behave.sh

• Download RGBD_Images.zip and Res.zip from InterCap dataset to ${ROOT}/data/InterCap/sequences.
  (Option 1) Directly download InterCap dataset from their download page.
  (Option 2) Run the script below.

  scripts/download_intercap.sh

• Download base_data.
• (Optional) Download the released checkpoints for BEHAVE or InterCap dataset.

Running CONTHO

Train

To train CONTHO on BEHAVE or InterCap dataset, please run

python main/train.py --gpu 0 --dataset {DATASET}

Test

To evaluate CONTHO on BEHAVE or InterCap dataset, please run

python main/test.py --gpu 0 --dataset {DATASET} --checkpoint {CKPT_PATH}

Results

Here, we report the performance of CONTHO.
CONTHO is a fast and accurate 3D human and object reconstruction framework!

Technical Q&A

• RuntimeError: Subtraction, the - operator, with a bool tensor is not supported. If you are trying to invert a mask, use the ~ or logical_not() operator instead: Please check reference.
• bash: scripts/download_behave.sh: Permission denied: Please check reference.

Acknowledgement

We thank:

• Hand4Whole for 3D human mesh reconsturction.
• CHORE for training and testing on BEHAVE.
• InterCap for download script of the dataset.
• DECO for in-the-wild experiment setup.

Reference

@inproceedings{nam2024contho,    
title = {Joint Reconstruction of 3D Human and Object via Contact-Based Refinement Transformer},
author = {Nam, Hyeongjin and Jung, Daniel Sungho and Moon, Gyeongsik and Lee, Kyoung Mu},
booktitle = {Proceedings of the IEEE/CVF Conference on Computer Vision and Pattern Recognition},  
year = {2024}  
}