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README.md
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<div align="center">
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<h1>π WeTok: Powerful Discrete Tokenization for High-Fidelity Visual Reconstruction</h1>
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[](https://arxiv.org/abs/2505.12489)
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[](https://github.com/zhuangshaobin/WeTok.github)
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[](https://huggingface.co/GrayShine/WeTok)
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</div>
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This project introduces **WeTok**, a powerful discrete visual tokenizer designed to resolve the long-standing conflict between compression efficiency and reconstruction fidelity. WeTok achieves state-of-the-art reconstruction quality, surpassing previous leading discrete and continuous tokenizers. <br><br>
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> <a href="https://github.com/zhuangshaobin/WeTok">WeTok: Powerful Discrete Tokenization for High-Fidelity Visual Reconstruction</a><br>
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> [Shaobin Zhuang](https://scholar.google.com/citations?user=PGaDirMAAAAJ&hl=zh-CN&oi=ao), [Yiwei Guo](https://scholar.google.com/citations?user=HCAyeJIAAAAJ&hl=zh-CN&oi=ao), Canmiao Fu, Zhipeng Huang, [Zeyue Tian](https://scholar.google.com/citations?user=dghq4MQAAAAJ&hl=zh-CN&oi=ao), [Ying Zhang](https://scholar.google.com/citations?user=R_psgxkAAAAJ&hl=zh-CN&oi=ao), Chen Li, [Yali Wang](https://scholar.google.com/citations?hl=zh-CN&user=hD948dkAAAAJ)<br>
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> Shanghai Jiao Tong University, WeChat Vision (Tencent Inc.), Shenzhen Institutes of Advanced Technology (Chinese Academy of Sciences), Hong Kong University of Science and Technology, Shanghai AI Laboratory<br>
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> <a href="./docs/WeTok.md">πWeTok.md</a>
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> ```
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> @article{zhuang2026wetok,
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> title={WeTok: Powerful Discrete Tokenization for High-Fidelity Visual Reconstruction},
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> author={Zhuang, Shaobin and Guo, Yiwei and Fu, Canmiao and Huang, Zhipeng and Tian, Zeyue and Zhang, Ying and Li, Chen and Wang, Yali},
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> journal={arXiv preprint arXiv:2409.04410},
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> year={2025}
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> }
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> ```
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<p align="center">
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<img src="./assets/teaser.png" width="90%">
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<br>
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<em>WeTok achieves a new state-of-the-art in reconstruction fidelity, surpassing both discrete and continuous tokenizers, while offering high compression ratios.</em>
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</p>
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## π° News
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* **[2025.08.05]**:fire::fire::fire: We release a series of WeTok models, achieving a record-low zero-shot rFID of **0.12** on ImageNet, surpassing top continuous tokenizers like FLUX-VAE and SD-VAE 3.5.
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* **[2025.08.05]** We are excited to release **WeTok**, a powerful discrete tokenizer featuring our novel **Grouped Lookup-Free Quantization (GFQ)** and a **generative decoder**. Code and pretrained models are now available!
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## π Implementations
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### π οΈ Installation
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- **Dependencies**:
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```
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bash env.sh
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```
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### Evaluation
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- **Evaluation on ImageNet 50K Validation Set**
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The dataset should be organized as follows:
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```
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imagenet
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βββ val/
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βββ ...
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```
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Run the 256Γ256 resolution evaluation script:
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```
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bash scripts/evaluation/imagenet_evaluation_256_dist.sh
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```
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Run the original resolution evaluation script:
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```
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bash scripts/evaluation/imagenet_evaluation_original_dist.sh
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```
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- **Evaluation on MS-COCO Val2017**
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The dataset should be organized as follows:
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```
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MSCOCO2017
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βββ val2017/
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βββ ...
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```
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Run the evaluation script:
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```
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bash scripts/evaluation/mscocoval_evaluation_256_dist.sh
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```
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Run the original resolution evaluation script:
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```
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bash scripts/evaluation/mscoco_evaluation_original_dist.sh
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```
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### Inference
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Simply test the effect of each model reconstruction:
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```
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bash scripts/inference/reconstruct_image.sh
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```
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<p align="center">
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<img src="./assets/compare.png" width="90%">
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<br>
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<em>Qualitative comparison of 512 Γ 512 image reconstruction on TokBench.</em>
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</p>
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<p align="center">
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<img src="./assets/gen.png" width="90%">
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<br>
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<em>WeTok-AR-XL generated samples at 256 Γ 256 resolution.</em>
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</p>
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## β€οΈ Acknowledgement
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Our work builds upon the foundations laid by many excellent projects in the field. We would like to thank the authors of [Open-MAGVIT2](https://arxiv.org/abs/2409.04410). We also drew inspiration from the methodologies presented in [LFQ](https://arxiv.org/abs/2310.05737), [BSQ](https://arxiv.org/abs/2406.07548). We are grateful for their contributions to the community.
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