Szczotar93
commited on
Commit
•
a19e884
1
Parent(s):
b382c26
Update handler.py
Browse files- handler.py +63 -63
handler.py
CHANGED
@@ -1,64 +1,64 @@
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from typing import Dict, List, Any
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from transformers import LayoutLMForTokenClassification, LayoutLMv2Processor
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import torch
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from subprocess import run
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# install tesseract-ocr and pytesseract
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run("apt install -y tesseract-ocr", shell=True, check=True)
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run("pip install pytesseract", shell=True, check=True)
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# helper function to unnormalize bboxes for drawing onto the image
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def unnormalize_box(bbox, width, height):
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return [
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width * (bbox[0] / 1000),
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height * (bbox[1] / 1000),
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width * (bbox[2] / 1000),
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height * (bbox[3] / 1000),
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]
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# set device
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device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
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class EndpointHandler:
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def __init__(self, path=""):
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# load model and processor from path
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self.model = LayoutLMForTokenClassification.from_pretrained(path).to(device)
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self.processor = LayoutLMv2Processor.from_pretrained(path)
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def __call__(self, data: Dict[str, bytes]) -> Dict[str, List[Any]]:
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"""
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Args:
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data (:obj:):
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includes the deserialized image file as PIL.Image
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"""
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# process input
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image = data.pop("inputs", data)
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# process image
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encoding = self.processor(image, return_tensors="pt")
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# run prediction
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with torch.inference_mode():
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outputs = self.model(
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input_ids=encoding.input_ids.to(device),
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bbox=encoding.bbox.to(device),
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attention_mask=encoding.attention_mask.to(device),
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token_type_ids=encoding.token_type_ids.to(device),
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)
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predictions = outputs.logits.softmax(-1)
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# post process output
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result = []
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for item, inp_ids, bbox in zip(
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predictions.squeeze(0).cpu(), encoding.input_ids.squeeze(0).cpu(), encoding.bbox.squeeze(0).cpu()
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):
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label = self.model.config.id2label[int(item.argmax().cpu())]
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if label == "O":
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continue
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score = item.max().item()
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text = self.processor.tokenizer.decode(inp_ids)
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bbox = unnormalize_box(bbox.tolist(), image.width, image.height)
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result.append({"label": label, "score": score, "text": text, "bbox": bbox})
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return {"predictions": result}
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from typing import Dict, List, Any
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from transformers import LayoutLMForTokenClassification, LayoutLMv2Processor
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import torch
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from subprocess import run
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# install tesseract-ocr and pytesseract
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run("apt install -y tesseract-ocr", shell=True, check=True)
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run("pip install pytesseract", shell=True, check=True)
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# helper function to unnormalize bboxes for drawing onto the image
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def unnormalize_box(bbox, width, height):
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return [
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width * (bbox[0] / 1000),
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height * (bbox[1] / 1000),
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width * (bbox[2] / 1000),
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height * (bbox[3] / 1000),
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]
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# set device
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device = torch.device("cuda" if torch.cuda.is_available() else "cpu")
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class EndpointHandler:
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def __init__(self, path=""):
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# load model and processor from path
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self.model = LayoutLMForTokenClassification.from_pretrained(path).to(device)
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self.processor = LayoutLMv2Processor.from_pretrained(path,apply_ocr=True)
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def __call__(self, data: Dict[str, bytes]) -> Dict[str, List[Any]]:
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"""
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Args:
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data (:obj:):
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includes the deserialized image file as PIL.Image
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"""
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# process input
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image = data.pop("inputs", data)
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# process image
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encoding = self.processor(image, return_tensors="pt")
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# run prediction
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with torch.inference_mode():
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outputs = self.model(
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input_ids=encoding.input_ids.to(device),
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bbox=encoding.bbox.to(device),
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attention_mask=encoding.attention_mask.to(device),
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token_type_ids=encoding.token_type_ids.to(device),
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)
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predictions = outputs.logits.softmax(-1)
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# post process output
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result = []
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for item, inp_ids, bbox in zip(
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predictions.squeeze(0).cpu(), encoding.input_ids.squeeze(0).cpu(), encoding.bbox.squeeze(0).cpu()
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):
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label = self.model.config.id2label[int(item.argmax().cpu())]
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if label == "O":
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continue
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score = item.max().item()
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text = self.processor.tokenizer.decode(inp_ids)
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bbox = unnormalize_box(bbox.tolist(), image.width, image.height)
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result.append({"label": label, "score": score, "text": text, "bbox": bbox})
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return {"predictions": result}
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