CAMS: Color-Aware Multi-Style Transfer

Mahmoud Afifi¹, Abdullah Abuolaim*¹, Mostafa Hussien*², Marcus A. Brubaker¹, Michael S. Brown¹

¹York University
²École de technologie supérieure

* denotes equal contribution

Reference code for the paper CAMS: Color-Aware Multi-Style Transfer. Mahmoud Afifi, Abdullah Abuolaim, Mostafa Hussien, Marcus A. Brubaker, and Michael S. Brown. arXiv preprint, 2021. If you use this code, please cite our paper:

@article{afifi2021coloraware,
  title={CAMS: Color-Aware Multi-Style Transfer},
  author={Afifi, Mahmoud and Abuolaim, Abdullah and Hussien, Mostafa and Brubaker, Marcus A. and Brown, Michael S.},
  journal={arXiv preprint arXiv:2106.13920},
  year={2021}
}

Get Started

Run color_aware_st.py or check the Colab link from here.

To compute the color-aware loss between two images, see test_cams_loss.py. To report the average color-aware loss for a set of pair images, use report_losses_of_image_dir.py.

Manual Selection

Our method allows the user to manually select the color correspondences between palettes or ignore some colors when optimizing.

To enable this mode, use SELECT_MATCHES = True.

Other useful parameters:

• SMOOTH: smooth generated mask before optimizing.
• SHOW_MASKS: to visualize the generated masks during optimization.
• SIGMA: to control the fall off in the radial basis function when generating the masks. Play with its value to get different results; generally, 0.25 and 0.3 work well in most cases.
• PALETTE_SIZE: number of colors in each palette.
• ADD_BLACK_WHITE: to append black and white colors to the final palette before optimizing.
• STYLE_LOSS_WEIGHT: weight of style loss
• CONTENT_LOSS_WEIGHT: weight of content loss.
• COLOR_DISTANCE: similarity metric when computing the mask. Options include: 'chroma_L2' (L2 on chroma space) or 'L2' (L2 on RGB space).
• STYLE_FEATURE_DISTANCE: similarity metric for style loss. Options include: 'L2' or 'COSINE' (for cosine similarity).
• CONTENT_FEATURE_DISTANCE: = similarity metric for content loss. Options include: 'L2' or 'COSINE' (for cosine similarity).
• OPTIMIZER: optimization algorithm. Options include: 'LBFGS', 'Adam', 'Adagrad'.

MIT License

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