DOC: added readme

README.md

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+# AnimeBackgroundGAN (CartoonGAN by Chen et. al.)
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+- [Hayao Miyazaki（宮崎駿）](https://en.wikipedia.org/wiki/Hayao_Miyazaki) pre-trained model from [CartoonGAN](http://openaccess.thecvf.com/content_cvpr_2018/CameraReady/2205.pdf) `[Chen et al., CVPR18]`.
+- This model can transform real-life photos into Japanese-animation-like backgrounds, following the style of movies such as [Howl's Moving Castle](https://en.wikipedia.org/wiki/Howl%27s_Moving_Castle_(film)) with a relatively soft and painterly style.
+- The implementation is in PyTorch (see [source code here](https://huggingface.co/spaces/akiyamasho/AnimeBackgroundGAN/blob/main/network/Transformer.py)).
+- Check out the demo here:
+
+[![Demo in Hugging Face Spaces](https://img.shields.io/badge/%F0%9F%A4%97%20Hugging%20Face-Spaces-blue)](https://huggingface.co/spaces/akiyamasho/AnimeBackgroundGAN)
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+# Other pre-trained model versions
+
+The other versions were also trained from movies of the different Japanese animation directors.
+
+##### Mamoru Hosoda（細田守）
+- director of  [Wolf Children](https://en.wikipedia.org/wiki/Wolf_Children), with a distinct mild and cool background style
+- [Director Profile](https://en.wikipedia.org/wiki/Mamoru_Hosoda)
+- **Model Repository**: https://huggingface.co/akiyamasho/AnimeBackgroundGAN-Hosoda
+
+##### Satoshi Kon（今敏）
+- director of [Paprika](https://en.wikipedia.org/wiki/Paprika_(2006_film)) with a distinct high contrast, reddish hue style
+- [Director Profile](https://en.wikipedia.org/wiki/Satoshi_Kon)
+- **Model Repository**: https://huggingface.co/akiyamasho/AnimeBackgroundGAN-Kon
+
+##### Makoto Shinkai （新海誠）
+- director of [Kimi no Na wa](https://en.wikipedia.org/wiki/Kimi_no_Na_wa) with a photorealistic painting style
+- [Director Profile](https://en.wikipedia.org/wiki/Makoto_Shinkai) 
+- **Model Repository**: https://huggingface.co/akiyamasho/AnimeBackgroundGAN-Miyazaki
+
+### Credits
+
+- Paper at [CartoonGAN: Generative Adversarial Networks for Photo Cartoonization](http://openaccess.thecvf.com/content_cvpr_2018/CameraReady/2205.pdf) `[Chen et al., CVPR18]`
+- Original PyTorch implementation was created by [Yijun Li](https://github.com/Yijunmaverick/)
+- Spaces/Models re-packaging and implementation by [Shō Akiyama](https://github.com/Yijunmaverick/).
+
+##### Special Thanks
+- [Nima Boscarino](https://github.com/NimaBoscarino)
+- [Omar Sanseviero](https://github.com/osanseviero)