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Deformable Style Transfer (ECCV 2020)

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Deformable Style Transfer (DST)

Project Page | Paper | Demo | 1 Minute Video | 10 Minute Talk

This repo provides the source code and demo of our paper: Deformable Style Transfer (ECCV 2020).

It also contains a pytorch implementation of a differentiable warping module that uses thin-plate spline interpolation. This is a reimplementation of WarpGAN's tensorflow code.

  author = {Sunnie S. Y. Kim and Nicholas Kolkin and Jason Salavon and Gregory Shakhnarovich},
  title = {Deformable Style Transfer},
  year = {2020},  
  booktitle = {European Conference on Computer Vision (ECCV)}  


  • Python 3 (e.g. conda create -n DST python=3.7.3)
  • pytorch, torchvision, cudatoolkit, numpy, PIL, matplotlib, sklearn



for a demo of our work. You can also run this demo on Google Colab.
for a short demo of the warping module we use to deform images.


for a single script that will produce a DST output, given a pair of content and style images, with default settings that we like.

1. Run NBB to get correspondences

Run NBB to find correspondences between images. This will take about a minute or two to run. If you already have matching points, you can skip this step.

python NBB/ --results_dir ${results_dir} --imageSize ${im_size} --fast \
  --datarootA ${content_path} --datarootB ${style_path}

2. Clean (NBB) points

If you're cleaning NBB points, set NBB to 1. This script will filter out points with low activations and select up to maxnumpoints with at least b space between them. Then it will remove crossing points.

If you're cleaning non-NBB points, set NBB to 0, and this script will only remove crossing points.

This will take a few seconds to run.

python ${content_path} ${style_path} ${content_pts_path} ${style_pts_path} \
  ${activation_path} ${output_path} ${im_size} ${NBB} ${max_num_points} ${b}

3. Run DST

Finally, run deformable style transfer. Stylization will take a few minutes on a GPU.

By default, DST will stylize the image at three scales (small to big) with max_iter iterations at each scale. Change content_weight (alpha) and warp_weight (beta) to control the relative importance of content preservation and deformation to stylization, and reg_weight (gamma) to control the amount of regularization on the deformation. We like using 8, 0.5, and 50, respectively.

Set verbose to 1 to get the individual loss term values during training.
Set save_intermediate to 1 to get intermediate stylized images every checkpoint_iter iterations.
Set save_extra to 1 to get additional plots (e.g. content/stylized images naively warped, content image with DST warp) with points and arrows marked.

python ${content_path} ${style_path} ${content_pts_path} ${style_pts_path} \
  ${output_dir} ${output_prefix} ${im_size} ${max_iter} \
  ${checkpoint_iter} ${content_weight} ${warp_weight} ${reg_weight} ${optim} \
  ${lr} ${verbose} ${save_intermediate} ${save_extra} ${device}


Our code is based on code from the following papers: - Style Transfer by Relaxed Optimal Transport and Self-Similarity. Nicholas Kolkin, Jason Salavon and Gregory Shakhnarovich. CVPR 2019. [paper] [code] [David Futschik's implementation] - WarpGAN: Automatic Caricature Generation. Yichun Shi, Debayan Deb and Anil K. Jain. CVPR 2019. [paper] [code] - Neural Best-Buddies: Sparse Cross-Domain Correspondence. Kfir Aberman, Jing Liao, Mingyi Shi, Dani Lischinski, Baoquan Chen and Daniel Cohen-Or. SIGGRAPH 2018. [paper] [code]

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