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227
docs/source/en/model_doc/donut.md
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docs/source/en/model_doc/donut.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 the
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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 an
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"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
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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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specific language governing permissions and limitations under the License. -->
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*This model was published in HF papers on 2021-11-30 and contributed to Hugging Face Transformers on 2022-08-12.*
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# Donut
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[Donut (Document Understanding Transformer)](https://huggingface.co/papers/2111.15664) is a visual document understanding model that doesn't require an Optical Character Recognition (OCR) engine. Unlike traditional approaches that extract text using OCR before processing, Donut employs an end-to-end Transformer-based architecture to directly analyze document images. This eliminates OCR-related inefficiencies making it more accurate and adaptable to diverse languages and formats.
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Donut features vision encoder ([Swin](./swin)) and a text decoder ([BART](./bart)). Swin converts document images into embeddings and BART processes them into meaningful text sequences.
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You can find all the original Donut checkpoints under the [Naver Clova Information Extraction](https://huggingface.co/naver-clova-ix) organization.
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> [!TIP]
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> Click on the Donut models in the right sidebar for more examples of how to apply Donut to different language and vision tasks.
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The examples below demonstrate how to perform document understanding tasks using Donut with [`Pipeline`] and [`AutoModel`]
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<hfoptions id="usage">
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<hfoption id="Pipeline">
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```python
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# pip install datasets
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from transformers import pipeline
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pipeline = pipeline(
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task="document-question-answering",
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model="naver-clova-ix/donut-base-finetuned-docvqa",
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device=0,
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)
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dataset = load_dataset("hf-internal-testing/example-documents", split="test")
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image = dataset[0]["image"]
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pipeline(image=image, question="What time is the coffee break?")
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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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# pip install datasets
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from datasets import load_dataset
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from transformers import AutoModelForImageTextToText, AutoProcessor
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processor = AutoProcessor.from_pretrained("naver-clova-ix/donut-base-finetuned-docvqa")
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model = AutoModelForImageTextToText.from_pretrained("naver-clova-ix/donut-base-finetuned-docvqa", device_map="auto")
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dataset = load_dataset("hf-internal-testing/example-documents", split="test")
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image = dataset[0]["image"]
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question = "What time is the coffee break?"
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task_prompt = f"<s_docvqa><s_question>{question}</s_question><s_answer>"
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inputs = processor(image, task_prompt, return_tensors="pt").to(model.device)
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outputs = model.generate(
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input_ids=inputs.input_ids,
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pixel_values=inputs.pixel_values,
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max_length=512
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)
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answer = processor.decode(outputs[0], skip_special_tokens=True)
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print(answer)
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```
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</hfoption>
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</hfoptions>
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Quantization reduces the memory burden of large models by representing the weights in a lower precision. Refer to the [Quantization](../quantization/overview) overview for more available quantization backends.
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The example below uses [torchao](../quantization/torchao) to only quantize the weights to int4.
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```python
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# pip install datasets torchao
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from datasets import load_dataset
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from transformers import AutoModelForImageTextToText, AutoProcessor, TorchAoConfig
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quantization_config = TorchAoConfig("int4_weight_only", group_size=128)
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processor = AutoProcessor.from_pretrained("naver-clova-ix/donut-base-finetuned-docvqa")
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model = AutoModelForImageTextToText.from_pretrained("naver-clova-ix/donut-base-finetuned-docvqa", quantization_config=quantization_config, device_map="auto")
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dataset = load_dataset("hf-internal-testing/example-documents", split="test")
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image = dataset[0]["image"]
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question = "What time is the coffee break?"
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task_prompt = f"<s_docvqa><s_question>{question}</s_question><s_answer>"
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inputs = processor(image, task_prompt, return_tensors="pt").to(model.device)
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outputs = model.generate(
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input_ids=inputs.input_ids,
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pixel_values=inputs.pixel_values,
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max_length=512
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)
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answer = processor.decode(outputs[0], skip_special_tokens=True)
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print(answer)
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```
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## Notes
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- Use Donut for document image classification as shown below.
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```py
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import re
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from transformers import DonutProcessor, VisionEncoderDecoderModel
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from datasets import load_dataset
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import torch
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processor = DonutProcessor.from_pretrained("naver-clova-ix/donut-base-finetuned-rvlcdip")
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model = VisionEncoderDecoderModel.from_pretrained("naver-clova-ix/donut-base-finetuned-rvlcdip", device_map="auto")
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model.to(model.device) # doctest: +IGNORE_RESULT
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# load document image
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dataset = load_dataset("hf-internal-testing/example-documents", split="test")
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image = dataset[1]["image"]
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# prepare decoder inputs
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task_prompt = "<s_rvlcdip>"
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decoder_input_ids = processor.tokenizer(task_prompt, add_special_tokens=False, return_tensors="pt").to(model.device).input_ids
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pixel_values = processor(image, return_tensors="pt").to(model.device).pixel_values
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outputs = model.generate(
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pixel_values.to(model.device),
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decoder_input_ids=decoder_input_ids.to(model.device),
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max_length=model.decoder.config.max_position_embeddings,
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pad_token_id=processor.tokenizer.pad_token_id,
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eos_token_id=processor.tokenizer.eos_token_id,
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use_cache=True,
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bad_words_ids=[[processor.tokenizer.unk_token_id]],
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return_dict_in_generate=True,
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)
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sequence = processor.batch_decode(outputs.sequences)[0]
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sequence = sequence.replace(processor.tokenizer.eos_token, "").replace(processor.tokenizer.pad_token, "")
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sequence = re.sub(r"<.*?>", "", sequence, count=1).strip() # remove first task start token
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print(processor.token2json(sequence))
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{'class': 'advertisement'}
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```
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- Use Donut for document parsing as shown below.
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```py
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import re
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from datasets import load_dataset
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from transformers import DonutProcessor, VisionEncoderDecoderModel
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import torch
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processor = DonutProcessor.from_pretrained("naver-clova-ix/donut-base-finetuned-cord-v2")
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model = VisionEncoderDecoderModel.from_pretrained("naver-clova-ix/donut-base-finetuned-cord-v2", device_map="auto")
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model.to(model.device) # doctest: +IGNORE_RESULT
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# load document image
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dataset = load_dataset("hf-internal-testing/example-documents", split="test")
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image = dataset[2]["image"]
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# prepare decoder inputs
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task_prompt = "<s_cord-v2>"
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decoder_input_ids = processor.tokenizer(task_prompt, add_special_tokens=False, return_tensors="pt").to(model.device).input_ids
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pixel_values = processor(image, return_tensors="pt").to(model.device).pixel_values
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outputs = model.generate(
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pixel_values.to(model.device),
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decoder_input_ids=decoder_input_ids.to(model.device),
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max_length=model.decoder.config.max_position_embeddings,
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pad_token_id=processor.tokenizer.pad_token_id,
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eos_token_id=processor.tokenizer.eos_token_id,
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use_cache=True,
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bad_words_ids=[[processor.tokenizer.unk_token_id]],
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return_dict_in_generate=True,
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)
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sequence = processor.batch_decode(outputs.sequences)[0]
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sequence = sequence.replace(processor.tokenizer.eos_token, "").replace(processor.tokenizer.pad_token, "")
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sequence = re.sub(r"<.*?>", "", sequence, count=1).strip() # remove first task start token
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print(processor.token2json(sequence))
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{'menu': {'nm': 'CINNAMON SUGAR', 'unitprice': '17,000', 'cnt': '1 x', 'price': '17,000'}, 'sub_total': {'subtotal_price': '17,000'}, 'total':
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{'total_price': '17,000', 'cashprice': '20,000', 'changeprice': '3,000'}}
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```
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## DonutSwinConfig
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[[autodoc]] DonutSwinConfig
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## DonutImageProcessor
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[[autodoc]] DonutImageProcessor
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- preprocess
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## DonutImageProcessorPil
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[[autodoc]] DonutImageProcessorPil
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- preprocess
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## DonutProcessor
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[[autodoc]] DonutProcessor
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- __call__
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- from_pretrained
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- save_pretrained
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- batch_decode
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- decode
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## DonutSwinModel
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[[autodoc]] DonutSwinModel
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- forward
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## DonutSwinForImageClassification
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[[autodoc]] transformers.DonutSwinForImageClassification
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- forward
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