309ae0d57b
Merge in RR/cv-analysis from image-service-compat to master
Squashed commit of the following:
commit 397d12a96a6b78de762f7b3a80a72427f5f51e97
Author: Julius Unverfehrt <julius.unverfehrt@iqser.com>
Date: Tue Aug 16 16:14:40 2022 +0200
update pdf2image, adjust response format for table-parsing & figure-detection
commit f2061bda8d25d64de974e97f36148dea29af50d9
Author: Julius Unverfehrt <julius.unverfehrt@iqser.com>
Date: Mon Aug 15 08:56:39 2022 +0200
add script to save figure detection data that can be used for image-service pipeline script
57 lines
1.9 KiB
Python
57 lines
1.9 KiB
Python
from dataclasses import asdict
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from operator import truth
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from funcy import lmap, flatten
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from cv_analysis.figure_detection.figure_detection import detect_figures
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from cv_analysis.table_parsing import parse_tables
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from cv_analysis.utils.structures import Rectangle
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from pdf2img.conversion import convert_pages_to_images
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from pdf2img.default_objects.image import ImagePlus, ImageInfo
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from pdf2img.default_objects.rectangle import RectanglePlus
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def get_analysis_pipeline(operation):
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if operation == "table":
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return make_analysis_pipeline(parse_tables, table_parsing_formatter, dpi=200)
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elif operation == "figure":
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return make_analysis_pipeline(detect_figures, figure_detection_formatter, dpi=200)
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else:
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raise
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def make_analysis_pipeline(analysis_fn, formatter, dpi):
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def analyse_pipeline(pdf: bytes, index=None):
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def parse_page(page: ImagePlus):
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image = page.asarray()
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rects = analysis_fn(image)
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if not rects:
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return
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infos = formatter(rects, page, dpi)
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return infos
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pages = convert_pages_to_images(pdf, index=index, dpi=dpi)
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results = map(parse_page, pages)
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yield from flatten(filter(truth, results))
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return analyse_pipeline
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def table_parsing_formatter(rects, page, dpi):
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def format_rect(rect: Rectangle):
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rect_plus = RectanglePlus.from_pixels(*rect.xyxy(), page.info, alpha=False, dpi=dpi)
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return rect_plus.asdict(derotate=True)
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bboxes = lmap(format_rect, rects)
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return {"pageInfo": page.asdict(), "tableCells": bboxes}
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def figure_detection_formatter(rects, page, dpi):
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def format_rect(rect: Rectangle):
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rect_plus = RectanglePlus.from_pixels(*rect.xyxy(), page.info, alpha=False, dpi=dpi)
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return asdict(ImageInfo(page.info, rect_plus.asbbox(derotate=False), rect_plus.alpha))
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return lmap(format_rect, rects)
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