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93
docs/source/en/model_doc/dit.md
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93
docs/source/en/model_doc/dit.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 2022-03-04 and contributed to Hugging Face Transformers on 2022-03-10.*
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# DiT
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[DiT](https://huggingface.co/papers/2203.02378) is an image transformer pretrained on large-scale unlabeled document images. It learns to predict the missing visual tokens from a corrupted input image. The pretrained DiT model can be used as a backbone in other models for visual document tasks like document image classification and table detection.
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<img src="https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/dit_architecture.jpg"/>
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You can find all the original DiT checkpoints under the [Microsoft](https://huggingface.co/microsoft?search_models=dit) organization.
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> [!TIP]
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> Refer to the [BEiT](./beit) docs for more examples of how to apply DiT to different vision tasks.
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The example below demonstrates how to classify an image with [`Pipeline`] or the [`AutoModel`] class.
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<hfoptions id="usage">
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<hfoption id="Pipeline">
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```python
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from transformers import pipeline
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pipeline = pipeline(
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task="image-classification",
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model="microsoft/dit-base-finetuned-rvlcdip",
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device=0
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)
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pipeline("https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/transformers/model_doc/dit-example.jpg")
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```
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</hfoption>
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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 AutoImageProcessor, AutoModelForImageClassification
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image_processor = AutoImageProcessor.from_pretrained(
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"microsoft/dit-base-finetuned-rvlcdip",
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use_fast=True,
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)
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model = AutoModelForImageClassification.from_pretrained(
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"microsoft/dit-base-finetuned-rvlcdip",
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device_map="auto",
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)
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url = "https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/transformers/model_doc/dit-example.jpg"
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image = Image.open(requests.get(url, stream=True).raw)
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inputs = image_processor(image, return_tensors="pt").to(model.device)
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with torch.no_grad():
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logits = model(**inputs).logits
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predicted_class_id = logits.argmax(dim=-1).item()
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class_labels = model.config.id2label
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predicted_class_label = class_labels[predicted_class_id]
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print(f"The predicted class label is: {predicted_class_label}")
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```
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</hfoption>
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</hfoptions>
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## Notes
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- The pretrained DiT weights can be loaded in a [BEiT] model with a modeling head to predict visual tokens.
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```py
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from transformers import BeitForMaskedImageModeling
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model = BeitForMaskedImageModeling.from_pretraining("microsoft/dit-base")
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```
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## Resources
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- Refer to this [notebook](https://github.com/NielsRogge/Transformers-Tutorials/blob/master/DiT/Inference_with_DiT_(Document_Image_Transformer)_for_document_image_classification.ipynb) for a document image classification inference example.
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