[3DV 2020] PeeledHuman: Robust Shape Representation for Textured 3D Human Body Reconstruction

Overview

PeeledHuman: Robust Shape Representation for Textured 3D Human Body Reconstruction

International Conference on 3D Vision, 2020

1Center for Visual Information Technology, IIIT Hyderabad



Abstract
We introduce PeeledHuman - a novel shape representation of the human body that is robust to self-occlusions. PeeledHuman encodes the human body as a set of Peeled Depth and RGB maps in 2D, obtained by performing raytracing on the 3D body model and extending each ray beyond its first intersection. This formulation allows us to handle self-occlusions efficiently compared to other representations. Given a monocular RGB image, we learn these Peeled maps in an end-to-end generative adversarial fashion using our novel framework - PeelGAN. We train PeelGAN using a 3D Chamfer loss and other 2D losses to generate multiple depth values per-pixel and a corresponding RGB field per-vertex in a dual-branch setup. In our simple non-parametric solution, the generated Peeled Depth maps are back-projected to 3D space to obtain a complete textured 3D shape. The corresponding RGB maps provide vertex-level texture details. We compare our method with current parametric and non-parametric methods in 3D reconstruction and find that we achieve state-of-theart-results. We demonstrate the effectiveness of our representation on publicly available BUFF and MonoPerfCap datasets as well as loose clothing data collected by our calibrated multi-Kinect setup.

Testing

Install environment

$ conda env create -f environment.yml

Download the checkpoint from here and store it in ./checkpoints/test/. The provided checkpoint was trained on the MonoPerfCap dataset.

Run the inference script

python test.py                            \
  --test_folder_path <path/to/images/dir> \
  --results_dir <path/to/results/dir>     \
  --name test                             \
  --direction AtoB                        \
  --model pix2pix                         \
  --netG resnet_18blocks                  \
  --output_nc 4                           \
  --load_size 512                         \
  --eval

The script looks for the checkpoint file in checkpoints/<checkpoint/name>

Citation

@inproceedings {jinka2020peeledhuman,
  author = {S. Jinka and R. Chacko and A. Sharma and P. Narayanan},
  booktitle = {2020 International Conference on 3D Vision (3DV)},
  title = {PeeledHuman: Robust Shape Representation for Textured 3D Human Body Reconstruction},
  year = {2020},
  pages = {879-888},
  doi = {10.1109/3DV50981.2020.00098},
  publisher = {IEEE Computer Society},
  }
  

Acknowledgements

Our network derives from the pix2pix work and hence builds on the official PyTorch implementation of pix2pix. This README template was borrowed from Aakash Kt. Please open an issue in case of any bugs/queries.

Owner
Rohan Chacko
CS Senior | Working on 3D Human reconstruction
Rohan Chacko
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