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Automatic data extraction from charts is challenging for two reasons: there exist many relations among objects in a chart, which is not a common consideration in general computer vision problems; and different types of charts may not be…

Computer Vision and Pattern Recognition · Computer Science 2019-07-01 Xiaoyi Liu , Diego Klabjan , Patrick NBless

The number of published PDF documents has increased exponentially in recent decades. There is a growing need to make their rich content discoverable to information retrieval tools. In this paper, we present a novel approach to document…

tabulapdf is an R package that utilizes the Tabula Java library to import tables from PDF files directly into R. This tool can reduce time and effort in data extraction processes in fields like investigative journalism. It allows for…

Information Retrieval · Computer Science 2024-09-24 Mauricio Vargas Sepúlveda , Thomas J. Leeper , Tom Paskhalis , Manuel Aristarán , Jeremy B. Merrill , Mike Tigas

Tables organize valuable content in a concise and compact representation. This content is extremely valuable for systems such as search engines, Knowledge Graph's, etc, since they enhance their predictive capabilities. Unfortunately, tables…

Computer Vision and Pattern Recognition · Computer Science 2022-03-14 Ahmed Nassar , Nikolaos Livathinos , Maksym Lysak , Peter Staar

The maintenance, archiving and usage of the design drawings is cumbersome in physical form in different industries for longer period. It is hard to extract information by simple scanning of drawing sheets. Converting them to their digital…

Computer Vision and Pattern Recognition · Computer Science 2024-06-18 Jesher Joshua M , Ragav V , Syed Ibrahim S P

We present an open-source and extensible knowledge extraction toolkit DeepKE, supporting complicated low-resource, document-level and multimodal scenarios in the knowledge base population. DeepKE implements various information extraction…

In the digital era, table structure recognition technology is a critical tool for processing and analyzing large volumes of tabular data. Previous methods primarily focus on visual aspects of table structure recovery but often fail to…

Computer Vision and Pattern Recognition · Computer Science 2024-09-23 Zhenrong Zhang , Shuhang Liu , Pengfei Hu , Jiefeng Ma , Jun Du , Jianshu Zhang , Yu Hu

Recognizing the layout of unstructured digital documents is an important step when parsing the documents into structured machine-readable format for downstream applications. Deep neural networks that are developed for computer vision have…

Computation and Language · Computer Science 2019-08-22 Xu Zhong , Jianbin Tang , Antonio Jimeno Yepes

Abstract--- Table detection and extraction has been studied in the context of documents like reports, where tables are clearly outlined and stand out from the document structure visually. We study this topic in a rather more challenging…

Information Retrieval · Computer Science 2021-08-20 Martin Holeček , Antonín Hoskovec , Petr Baudiš , Pavel Klinger

Recent years in NLP have seen the continued development of domain-specific information extraction tools for scientific documents, alongside the release of increasingly multimodal pretrained transformer models. While the opportunity for…

Computation and Language · Computer Science 2025-06-25 Sireesh Gururaja , Yueheng Zhang , Guannan Tang , Tianhao Zhang , Kevin Murphy , Yu-Tsen Yi , Junwon Seo , Anthony Rollett , Emma Strubell

Extracting metadata from scientific papers can be considered a solved problem in NLP due to the high accuracy of state-of-the-art methods. However, this does not apply to German scientific publications, which have a variety of styles and…

Information Retrieval · Computer Science 2021-06-15 Zeyd Boukhers , Nada Beili , Timo Hartmann , Prantik Goswami , Muhammad Arslan Zafar

It is the most important way for researchers to acquire academic progress via reading scientific papers, most of which are in PDF format. However, existing PDF Readers like Adobe Acrobat Reader and Foxit PDF Reader are usually only for…

Digital Libraries · Computer Science 2022-06-22 Sheng-Fu Wang , Shu-Hang Liu , Tian-Yi Che , Yi-Fan Lu , Song-Xiao Yang , Heyan Huang , Xian-Ling Mao

Multimodal document understanding is a challenging task to process and comprehend large amounts of textual and visual information. Recent advances in Large Language Models (LLMs) have significantly improved the performance of this task.…

Computer Vision and Pattern Recognition · Computer Science 2026-04-28 Xudong Xie , Hao Yan , Liang Yin , Yang Liu , Jing Ding , Minghui Liao , Yuliang Liu , Wei Chen , Xiang Bai

The task of table structure recognition aims to recognize the internal structure of a table, which is a key step to make machines understand tables. Currently, there are lots of studies on this task for different file formats such as ASCII…

Information Retrieval · Computer Science 2019-08-29 Zewen Chi , Heyan Huang , Heng-Da Xu , Houjin Yu , Wanxuan Yin , Xian-Ling Mao

We focus on electronic theses and dissertations (ETDs), aiming to improve access and expand their utility, since more than 6 million are publicly available, and they constitute an important corpus to aid research and education across…

Computer Vision and Pattern Recognition · Computer Science 2021-06-30 Sampanna Yashwant Kahu , William A. Ingram , Edward A. Fox , Jian Wu

Document parsing (DP) transforms unstructured or semi-structured documents into structured, machine-readable representations, enabling downstream applications such as knowledge base construction and retrieval-augmented generation (RAG).…

Document layout analysis is a critical preprocessing step in document intelligence, enabling the detection and localization of structural elements such as titles, text blocks, tables, and formulas. Despite its importance, existing layout…

Computer Vision and Pattern Recognition · Computer Science 2025-03-24 Ting Sun , Cheng Cui , Yuning Du , Yi Liu

Tabulated content is omnipresent in scientific literature. This work presents the R package *tableParser*, designed to extract and postprocess tables from NISO-JATS-encoded XML, HTML, DOCX, and, with limitations, PDF documents.…

Applications · Statistics 2026-03-23 Ingmar Böschen

This paper introduces a deep learning model tailored for document information analysis, emphasizing document classification, entity relation extraction, and document visual question answering. The proposed model leverages transformer-based…

Computer Vision and Pattern Recognition · Computer Science 2023-10-26 Tofik Ali , Partha Pratim Roy

Computer aided Tabular Data Extraction has always been a very challenging and error prone task because it demands both Spectral and Spatial Sanity of data. In this paper we discuss an approach for Tabular Data Extraction in the realm of…

Computation and Language · Computer Science 2021-05-20 Saumya Banthia , Anantha Sharma , Ravi Mangipudi