erukaLabels.py

# -*- coding: utf-8 -*-
"""erukaLabels.ipynb

Automatically generated by Colaboratory.

Original file is located at
    https://colab.research.google.com/drive/1p0VRh0b-OtHjNNLIcNUPb2BaoiE9Mh7O
"""



# coding=utf-8
import json
import os

import datasets

from PIL import Image
import numpy as np

def load_image(image_path):
    image = Image.open(image_path).convert("RGB")
    w, h = image.size
    return image, (w, h)

def normalize_bbox(bbox, size):
    return [
        int(1000 * bbox[0] / size[0]),
        int(1000 * bbox[1] / size[1]),
        int(1000 * bbox[4] / size[0]),
        int(1000 * bbox[5] / size[1]),
    ]

logger = datasets.logging.get_logger(__name__)


_CITATION = """\
@article{Jaume2019FUNSDAD,
  title={FUNSD: A Dataset for Form Understanding in Noisy Scanned Documents},
  author={Guillaume Jaume and H. K. Ekenel and J. Thiran},
  journal={2019 International Conference on Document Analysis and Recognition Workshops (ICDARW)},
  year={2019},
  volume={2},
  pages={1-6}
}
"""

_DESCRIPTION = """\
https://guillaumejaume.github.io/FUNSD/
"""


class FunsdConfig(datasets.BuilderConfig):
    """BuilderConfig for FUNSD"""

    def __init__(self, **kwargs):
        """BuilderConfig for FUNSD.
        Args:
          **kwargs: keyword arguments forwarded to super.
        """
        super(FunsdConfig, self).__init__(**kwargs)

class Funsd(datasets.GeneratorBasedBuilder):
    """Conll2003 dataset."""

    BUILDER_CONFIGS = [
        FunsdConfig(name="funsd", version=datasets.Version("1.0.0"), description="FUNSD dataset"),
    ]

    def _info(self):
        return datasets.DatasetInfo(
            description=_DESCRIPTION,
            features=datasets.Features(
                {
                    "id": datasets.Value("string"),
                    "tokens": datasets.Sequence(datasets.Value("string")),
                    "bboxes": datasets.Sequence(datasets.Sequence(datasets.Value("int64"))),
                    "ner_tags": datasets.Sequence(
                        datasets.features.ClassLabel(
                            names=["O", "R0C0"]
                        )
                    ),
                    "image": datasets.features.Image(),
                }
            ),
            supervised_keys=None,
            homepage="https://guillaumejaume.github.io/FUNSD/",
            citation=_CITATION,
        )

    def _split_generators(self, dl_manager):
        """Returns SplitGenerators."""
        downloaded_file = dl_manager.download_and_extract("dataset_eruka2.zip")
        return [
            datasets.SplitGenerator(
                name=datasets.Split.TRAIN, gen_kwargs={"filepath": f"{downloaded_file}/dataset_eruka/training_data/"}
            ),
            datasets.SplitGenerator(
                name=datasets.Split.TEST, gen_kwargs={"filepath": f"{downloaded_file}/dataset_eruka/testing_data/"}
            ),
        ]

    def get_line_bbox(self, bboxs):
        x = [bboxs[i][j] for i in range(len(bboxs)) for j in range(0, len(bboxs[i]), 2)]
        y = [bboxs[i][j] for i in range(len(bboxs)) for j in range(1, len(bboxs[i]), 2)]

        x0, y0, x1, y1 = min(x), min(y), max(x), max(y)

        assert x1 >= x0 and y1 >= y0
        bbox = [[x0, y0, x1, y1] for _ in range(len(bboxs))]
        return bbox

    def _generate_examples(self, filepath):
        logger.info("⏳ Generating examples from = %s", filepath)
        ann_dir = os.path.join(filepath, "annotations")
        img_dir = os.path.join(filepath, "images")
        for guid, file in enumerate(sorted(os.listdir(ann_dir))):
            tokens = []
            bboxes = []
            ner_tags = []
            if file == ".DS_Store":
                continue

            file_path = os.path.join(ann_dir, file)
            print(file_path)
            with open(file_path, "r", encoding="utf-8") as f:
                data = json.load(f)
            image_path = os.path.join(img_dir, file)

            # changed
            image_path = image_path.replace("json", "jpg")
            image, size = load_image(image_path)

            #new
            ddata_path = data["analyzeResult"]["pages"][0]["words"]

            for item in ddata_path:
                cur_line_bboxes = []
                words, label = [item["content"]], item["confidence"]
                if len(words) == 0:
                    continue
                tokens.append(words[0])
                print(label)
                print(item)
                if isinstance(label, float):
                    ner_tags.append("O")
                else:
                    print(label)
                    ner_tags.append(label.upper())
                cur_line_bboxes.append(normalize_bbox(item["polygon"], size))

                cur_line_bboxes = self.get_line_bbox(cur_line_bboxes)
                bboxes.extend(cur_line_bboxes)
            yield guid, {"id": str(guid), "tokens": tokens, "bboxes": bboxes, "ner_tags": ner_tags,
                         "image": image}