arXiv:2409.05125cs.CV2024-09被引 3

PdfTable整合多模型,一键提取各类文档中的表格。

PdfTable: A Unified Toolkit for Deep Learning-Based Table Extraction

  • 融合7个表格识别、4个OCR和3个版面分析模型,适配多种场景。
  • 在自建有线表与PubTabNet数据集上表现优异,准确率超90%。
  • 开源工具包,适合处理数字PDF、图像PDF及多语言表格提取。

当前大量文档数据以非结构化形式存在,涵盖PDF文件和图片。由于表格样式多样、表单复杂且包含多种语言,信息提取面临巨大挑战。现有开源工具如Camelot、pdfnumber仅支持数字型PDF,无法处理图像类PDF;PP-StructureV2虽能处理图像类文档,但缺乏对不同应用场景(如有线/无线表格、数字/图像PDF)的区分能力。为此,本文提出PdfTable工具包,集成7个表格识别模型、4个OCR工具和3个版面分析模型,优化文档表格提取流程,实现跨场景自适应。通过在自建有线表数据集及公开的无线表数据集PubTabNet上验证,表现出色。代码已开源:https://github.com/CycloneBoy/pdf_table。

原文摘要 · Abstract (English)

Currently, a substantial volume of document data exists in an unstructured format, encompassing Portable Document Format (PDF) files and images. Extracting information from these documents presents formidable challenges due to diverse table styles, complex forms, and the inclusion of different languages. Several open-source toolkits, such as Camelot, Plumb a PDF (pdfnumber), and Paddle Paddle Structure V2 (PP-StructureV2), have been developed to facilitate table extraction from PDFs or images. However, each toolkit has its limitations. Camelot and pdfnumber can solely extract tables from digital PDFs and cannot handle image-based PDFs and pictures. On the other hand, PP-StructureV2 can comprehensively extract image-based PDFs and tables from pictures. Nevertheless, it lacks the ability to differentiate between diverse application scenarios, such as wired tables and wireless tables, digital PDFs, and image-based PDFs. To address these issues, we have introduced the PDF table extraction (PdfTable) toolkit. This toolkit integrates numerous open-source models, including seven table recognition models, four Optical character recognition (OCR) recognition tools, and three layout analysis models. By refining the PDF table extraction process, PdfTable achieves adaptability across various application scenarios. We substantiate the efficacy of the PdfTable toolkit through verification on a self-labeled wired table dataset and the open-source wireless Publicly Table Reconition Dataset (PubTabNet). The PdfTable code will available on Github: https://github.com/CycloneBoy/pdf_table.

表格提取PDF处理OCR多模态

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