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docs/source/en/model_doc/vit_mae.md
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docs/source/en/model_doc/vit_mae.md
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<!--Copyright 2022 The HuggingFace Team. All rights reserved.
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Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
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the License. You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
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an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
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specific language governing permissions and limitations under the License.
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⚠️ Note that this file is in Markdown but contain specific syntax for our doc-builder (similar to MDX) that may not be
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rendered properly in your Markdown viewer.
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-->
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*This model was published in HF papers on 2021-11-11 and contributed to Hugging Face Transformers on 2022-01-18.*
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<div style="float: right;">
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<div class="flex flex-wrap space-x-1">
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<img alt="FlashAttention" src="https://img.shields.io/badge/%E2%9A%A1%EF%B8%8E%20FlashAttention-eae0c8?style=flat">
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<img alt="SDPA" src="https://img.shields.io/badge/SDPA-DE3412?style=flat&logo=pytorch&logoColor=white">
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</div>
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</div>
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# ViTMAE
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[ViTMAE](https://huggingface.co/papers/2111.06377) is a self-supervised vision model that is pretrained by masking large portions of an image (~75%). An encoder processes the visible image patches and a decoder reconstructs the missing pixels from the encoded patches and mask tokens. After pretraining, the encoder can be reused for downstream tasks like image classification or object detection — often outperforming models trained with supervised learning.
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<img src="https://user-images.githubusercontent.com/11435359/146857310-f258c86c-fde6-48e8-9cee-badd2b21bd2c.png"
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alt="drawing" width="600"/>
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You can find all the original ViTMAE checkpoints under the [AI at Meta](https://huggingface.co/facebook?search_models=vit-mae) organization.
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> [!TIP]
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> Click on the ViTMAE models in the right sidebar for more examples of how to apply ViTMAE to vision tasks.
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The example below demonstrates how to reconstruct the missing pixels with the [`ViTMAEForPreTraining`] class.
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<hfoptions id="usage">
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<hfoption id="AutoModel">
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```python
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import requests
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import torch
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from PIL import Image
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from transformers import ViTImageProcessor, ViTMAEForPreTraining
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url = "https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/pipeline-cat-chonk.jpeg"
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image = Image.open(requests.get(url, stream=True).raw)
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processor = ViTImageProcessor.from_pretrained("facebook/vit-mae-base")
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inputs = processor(image, return_tensors="pt").to(model.device)
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inputs = {k: v.to(model.device) for k, v in inputs.items()}
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model = ViTMAEForPreTraining.from_pretrained("facebook/vit-mae-base", attn_implementation="sdpa", device_map="auto")
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with torch.no_grad():
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outputs = model(**inputs)
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reconstruction = outputs.logits
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```
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</hfoption>
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</hfoptions>
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## Notes
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- ViTMAE is typically used in two stages. Self-supervised pretraining with [`ViTMAEForPreTraining`], and then discarding the decoder and fine-tuning the encoder. After fine-tuning, the weights can be plugged into a model like [`ViTForImageClassification`].
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- Use [`ViTImageProcessor`] for input preparation.
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## Resources
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- Refer to this [notebook](https://github.com/NielsRogge/Transformers-Tutorials/blob/master/ViTMAE/ViT_MAE_visualization_demo.ipynb) to learn how to visualize the reconstructed pixels from [`ViTMAEForPreTraining`].
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## ViTMAEConfig
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[[autodoc]] ViTMAEConfig
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## ViTMAEModel
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[[autodoc]] ViTMAEModel
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- forward
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## ViTMAEForPreTraining
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[[autodoc]] transformers.ViTMAEForPreTraining
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- forward
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