

import re
from transformers import DonutProcessor, VisionEncoderDecoderModel
from datasets import load_dataset
import torch
processor = DonutProcessor.from_pretrained("naver-clova-ix/donut-base-finetuned-cord-v2")
model = VisionEncoderDecoderModel.from_pretrained("naver-clova-ix/donut-base-finetuned-cord-v2")
device = "cuda" if torch.cuda.is_available() else "cpu"
model.to(device)  # doctest: +IGNORE_RESULT
load document image
dataset = load_dataset("hf-internal-testing/example-documents", split="test")
image = dataset[2]["image"]
prepare decoder inputs
task_prompt = ""
decoder_input_ids = processor.tokenizer(task_prompt, add_special_tokens=False, return_tensors="pt").input_ids
pixel_values = processor(image, return_tensors="pt").pixel_values
outputs = model.generate(
     pixel_values.to(device),
     decoder_input_ids=decoder_input_ids.to(device),
     max_length=model.decoder.config.max_position_embeddings,
     pad_token_id=processor.tokenizer.pad_token_id,
     eos_token_id=processor.tokenizer.eos_token_id,
     use_cache=True,
     bad_words_ids=[[processor.tokenizer.unk_token_id]],
     return_dict_in_generate=True,
 )
sequence = processor.batch_decode(outputs.sequences)[0]
sequence = sequence.replace(processor.tokenizer.eos_token, "").replace(processor.tokenizer.pad_token, "")
sequence = re.sub(r"<.*?>", "", sequence, count=1).strip()  # remove first task start token
print(processor.token2json(sequence))
{'menu': {'nm': 'CINNAMON SUGAR', 'unitprice': '17,000', 'cnt': '1 x', 'price': '17,000'}, 'sub_total': {'subtotal_price': '17,000'}, 'total': {'total_price': '17,000', 'cashprice': '20,000', 'changeprice': '3,000'}}