| import os |
|
|
| from datasets import load_dataset |
| from dataclasses import dataclass, field |
| import tqdm.auto as tqdm |
| from typing import List, Dict |
| from jinja2 import Environment, FileSystemLoader |
| from shapely.geometry import Polygon |
| import itertools |
|
|
| |
| env = Environment(loader=FileSystemLoader('.')) |
| template = env.get_template('template.xml') |
|
|
| ds = load_dataset("../data") |
|
|
| RATIO = .05 |
|
|
|
|
| @dataclass |
| class Tag: |
| idx: str |
| label: str |
| element_type: str |
|
|
|
|
| @dataclass |
| class Line: |
| idx: str |
| bbox: List[int] |
| polygons: List[int] |
| category: str |
| baseline: List[int] |
|
|
| @property |
| def simple_polygon(self): |
| x = list( |
| map( |
| int, |
| itertools.chain( |
| *Polygon( |
| list(zip(self.polygons[::2], self.polygons[1::2])) |
| ).simplify(RATIO * self.height).exterior.coords |
| ) |
| ) |
| )[:-2] |
| return x |
|
|
| @property |
| def hpos(self): |
| return self.bbox[0] |
|
|
| @property |
| def vpos(self): |
| return self.bbox[1] |
|
|
| @property |
| def width(self): |
| return self.bbox[2] - self.bbox[0] |
|
|
| @property |
| def height(self): |
| return self.bbox[3] - self.bbox[1] |
|
|
|
|
| @dataclass |
| class Block: |
| idx: str |
| bbox: List[int] |
| polygons: List[int] |
| category: str |
| lines: List[Line] = field(default_factory=list) |
|
|
| @property |
| def hpos(self): |
| return self.bbox[0] |
|
|
| @property |
| def vpos(self): |
| return self.bbox[1] |
|
|
| @property |
| def width(self): |
| return self.bbox[2] - self.bbox[0] |
|
|
| @property |
| def height(self): |
| return self.bbox[3] - self.bbox[1] |
|
|
|
|
| for split in ds: |
| os.makedirs(f"altos/{split}", exist_ok=True) |
| for image_idx, image in enumerate(tqdm.tqdm(ds[split])): |
| blocks: Dict[str, Block] = {} |
| tags: Dict[str, Tag] = {} |
| objs = image["objects"] |
| for i, idx in enumerate(objs["id"]): |
| if objs["category"][i] and objs["category"][i] not in tags: |
| tags[objs["category"][i]] = Tag(f"LABEL_{len(tags)}", objs["category"][i], objs["type"][i]) |
|
|
| if objs["type"][i] == "block": |
| blocks[idx] = Block(idx, objs["bbox"][i], objs["polygons"][i], objs["category"][i]) |
| else: |
| if objs["parent"][i] == "": |
| blocks[""] = Block(None, [], [], "") |
| if objs["baseline"][i] is None: |
| print(f"Line broken ? {image['shelfmark']} {idx} {objs['polygons'][i]}") |
| continue |
| blocks[objs["parent"][i]].lines.append( |
| Line(idx, objs["bbox"][i], objs["polygons"][i], objs["category"][i], objs['baseline'][i]) |
| ) |
| image["image"].convert('RGB').save(f"./altos/{split}/image-{image_idx:04}.jpg") |
| with open(f"./altos/{split}/image-{image_idx:04}.xml", "w") as f: |
| f.write( |
| template.render( |
| blocks=blocks, |
| image=image, |
| path=f"image-{image_idx:04}.jpg", |
| tags=tags |
| ) |
| ) |
|
|
