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With the recent developments in digitisation, there are increasing number of documents available online. There are several information extraction tools that are available to extract information from digitised documents. However, identifying…

Information Retrieval · Computer Science 2021-11-08 Richi Nayak , Thirunavukarasu Balasubramaniam , Sangeetha Kutty , Sachindra Banduthilaka , Erin Peterson

Given the ubiquity of handwritten documents in human transactions, Optical Character Recognition (OCR) of documents have invaluable practical worth. Optical character recognition is a science that enables to translate various types of…

Computer Vision and Pattern Recognition · Computer Science 2020-01-03 Jamshed Memon , Maira Sami , Rizwan Ahmed Khan

There is little to no data available to build natural language processing models for most endangered languages. However, textual data in these languages often exists in formats that are not machine-readable, such as paper books and scanned…

Computation and Language · Computer Science 2020-11-12 Shruti Rijhwani , Antonios Anastasopoulos , Graham Neubig

The digitization of scanned forms and documents is changing the data sources that enterprises manage. To integrate these new data sources with enterprise data, the current state-of-the-art approach is to convert the images to ASCII text…

Databases · Computer Science 2012-01-09 Arun Kumar , Christopher Ré

Information extraction (IE) from Visually Rich Documents (VRDs) containing layout features along with text is a critical and well-studied task. Specialized non-LLM NLP-based solutions typically involve training models using both textual and…

Information Retrieval · Computer Science 2025-05-21 Aniket Bhattacharyya , Anurag Tripathi , Ujjal Das , Archan Karmakar , Amit Pathak , Maneesh Gupta

In this paper, we present an Optical Character Recognition (OCR) system specifically designed for the accurate recognition and digitization of Greek polytonic texts. By leveraging the combined strengths of convolutional layers for feature…

Computer Vision and Pattern Recognition · Computer Science 2025-06-27 Perifanos Konstantinos , Goutsos Dionisis

Form understanding depends on both textual contents and organizational structure. Although modern OCR performs well, it is still challenging to realize general form understanding because forms are commonly used and of various formats. The…

Computer Vision and Pattern Recognition · Computer Science 2020-10-23 Zilong Wang , Mingjie Zhan , Xuebo Liu , Ding Liang

Information Extraction processes in handwritten documents tend to rely on obtaining an automatic transcription and performing Named Entity Recognition (NER) over such transcription. For this reason, in publicly available datasets, the…

Computer Vision and Pattern Recognition · Computer Science 2024-04-30 David Villanova-Aparisi , Solène Tarride , Carlos-D. Martínez-Hinarejos , Verónica Romero , Christopher Kermorvant , Moisés Pastor-Gadea

Presentation of folded documents is not an uncommon case in modern society. Digitizing such documents by capturing them with a smartphone camera can be tricky since a crease can divide the document contents into separate planes. To unfold…

Computer Vision and Pattern Recognition · Computer Science 2024-08-13 A. M. Ershov , D. V. Tropin , E. E. Limonova , D. P. Nikolaev , V. V. Arlazarov

Improving data quality in unstructured documents is a long-standing challenge. Unstructured data, especially in textual form, inherently lacks defined semantics, which poses significant challenges for effective processing and for ensuring…

Databases · Computer Science 2025-02-26 Besat Kassaie , Frank Wm. Tompa

Semi-structured documents integrate diverse interleaved data elements (e.g., tables, charts, hierarchical paragraphs) arranged in various and often irregular layouts. These documents are widely observed across domains and account for a…

Information Retrieval · Computer Science 2026-04-15 Bangrui Xu , Qihang Yao , Zirui Tang , Xuanhe Zhou , Yeye He , Shihan Yu , Qianqian Xu , Bin Wang , Guoliang Li , Conghui He , Fan Wu

Accurate extraction of key information from 2D engineering drawings is crucial for high-precision manufacturing. Manual extraction is slow and labor-intensive, while traditional Optical Character Recognition (OCR) techniques often struggle…

Computer Vision and Pattern Recognition · Computer Science 2025-09-04 Muhammad Tayyab Khan , Zane Yong , Lequn Chen , Jun Ming Tan , Wenhe Feng , Seung Ki Moon

Table extraction is an important but still unsolved problem. In this paper, we introduce a flexible and modular table extraction system. We develop two rule-based algorithms that perform the complete table recognition process, including…

Computer Vision and Pattern Recognition · Computer Science 2021-12-03 Marcin Namysl , Alexander M. Esser , Sven Behnke , Joachim Köhler

Recent advances in vision-language models have demonstrated remarkable performance across diverse multi-modal tasks, including document question answering that leverages structured visual cues from text, tables, and figures. However, unlike…

Computer Vision and Pattern Recognition · Computer Science 2026-04-27 Joonmyung Choi , Sanghyeok Lee , Jongha Kim , Sehyung Kim , Dohwan Ko , Jihyung Kil , Hyunwoo J. Kim

Documents are central to many business systems, and include forms, reports, contracts, invoices or purchase orders. The information in documents is typically in natural language, but can be organized in various layouts and formats. There…

Information Retrieval · Computer Science 2021-10-08 Sumit Shekhar , Bhanu Prakash Reddy Guda , Ashutosh Chaubey , Ishan Jindal , Avneet Jain

A key bottleneck in building automatic extraction models for visually rich documents like invoices is the cost of acquiring the several thousand high-quality labeled documents that are needed to train a model with acceptable accuracy. We…

Computation and Language · Computer Science 2022-11-01 Yichao Zhou , James B. Wendt , Navneet Potti , Jing Xie , Sandeep Tata

A typical IR system that delivers and stores information is affected by problem of matching between user query and available content on web. Use of Ontology represents the extracted terms in form of network graph consisting of nodes, edges,…

Information Retrieval · Computer Science 2017-03-23 Gagandeep Singh Narula , Vishal Jain

Multimodal document retrieval aims to identify and retrieve various forms of multimodal content, such as figures, tables, charts, and layout information from extensive documents. Despite its increasing popularity, there is a notable lack of…

Information Retrieval · Computer Science 2025-11-10 Kuicai Dong , Yujing Chang , Xin Deik Goh , Dexun Li , Ruiming Tang , Yong Liu

Over the past few decades, the amount of scientific articles and technical literature has increased exponentially in size. Consequently, there is a great need for systems that can ingest these documents at scale and make their content…

Digital Libraries · Computer Science 2018-05-25 Peter W J Staar , Michele Dolfi , Christoph Auer , Costas Bekas

We present SummaRuNNer, a Recurrent Neural Network (RNN) based sequence model for extractive summarization of documents and show that it achieves performance better than or comparable to state-of-the-art. Our model has the additional…

Computation and Language · Computer Science 2016-11-15 Ramesh Nallapati , Feifei Zhai , Bowen Zhou