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Rule-based information extraction has lately received a fair amount of attention from the database community, with several languages appearing in the last few years. Although information extraction systems are intended to deal with…

Databases · Computer Science 2018-01-01 Francisco Maturana , Cristian Riveros , Domagoj Vrgoč

We introduce a simple new approach to the problem of understanding documents where non-trivial layout influences the local semantics. To this end, we modify the Transformer encoder architecture in a way that allows it to use layout features…

Computation and Language · Computer Science 2021-10-05 Łukasz Garncarek , Rafał Powalski , Tomasz Stanisławek , Bartosz Topolski , Piotr Halama , Michał Turski , Filip Graliński

Information extraction (IE) from unstructured documents remains a critical challenge in data processing pipelines. Traditional optical character recognition (OCR) methods and conventional parsing engines demonstrate limited effectiveness…

Computer Vision and Pattern Recognition · Computer Science 2025-07-28 Aditya Parikh

This paper proposes OCR++, an open-source framework designed for a variety of information extraction tasks from scholarly articles including metadata (title, author names, affiliation and e-mail), structure (section headings and body text,…

In this work, product tables in invoices are obtained autonomously via a deep learning model, which is named as ExTTNet. Firstly, text is obtained from invoice images using Optical Character Recognition (OCR) techniques. Tesseract OCR…

Computer Vision and Pattern Recognition · Computer Science 2024-02-06 Adem Akdoğan , Murat Kurt

Pool of knowledge available to the mankind depends on the source of learning resources, which can vary from ancient printed documents to present electronic material. The rapid conversion of material available in traditional libraries to…

Computer Vision and Pattern Recognition · Computer Science 2014-12-25 Akmal Jahan Mac , Roshan G Ragel

Information extraction from copy-heavy documents, characterized by massive volumes of structurally similar content, represents a critical yet understudied challenge in enterprise document processing. We present a systematic framework that…

Computation and Language · Computer Science 2025-10-14 Zilong Wang , Xiaoyu Shen

Document alignment and registration play a crucial role in numerous real-world applications, such as automated form processing, anomaly detection, and workflow automation. Traditional methods for document alignment rely on image-based…

Computer Vision and Pattern Recognition · Computer Science 2025-05-27 Ross Greer , Alisha Ukani , Katherine Izhikevich , Earlence Fernandes , Stefan Savage , Alex C. Snoeren

Business Process Model and Notation (BPMN) is a widely adopted standard for representing complex business workflows. While BPMN diagrams are often exchanged as visual images, existing methods primarily rely on XML representations for…

Artificial Intelligence · Computer Science 2025-12-01 Pritam Deka , Barry Devereux

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

Computer vision with state-of-the-art deep learning models has achieved huge success in the field of Optical Character Recognition (OCR) including text detection and recognition tasks recently. However, Key Information Extraction (KIE) from…

Computer Vision and Pattern Recognition · Computer Science 2020-07-21 Wenwen Yu , Ning Lu , Xianbiao Qi , Ping Gong , Rong Xiao

Large Language Models (LLMs) have demonstrated remarkable capabilities in text comprehension, but their ability to process complex, hierarchical tabular data remains underexplored. We present a novel approach to extracting structured data…

Computation and Language · Computer Science 2025-11-25 Vikram Aggarwal , Jay Kulkarni , Aditi Mascarenhas , Aakriti Narang , Siddarth Raman , Ajay Shah , Susan Thomas

Visually rich documents (VRDs) are ubiquitous in daily business and life. Examples are purchase receipts, insurance policy documents, custom declaration forms and so on. In VRDs, visual and layout information is critical for document…

Information Retrieval · Computer Science 2019-03-28 Xiaojing Liu , Feiyu Gao , Qiong Zhang , Huasha Zhao

Extracting information from unstructured text documents is a demanding task, since these documents can have a broad variety of different layouts and a non-trivial reading order, like it is the case for multi-column documents or nested…

Artificial Intelligence · Computer Science 2022-02-08 Matthias Engelbach , Dennis Klau , Jens Drawehn , Maximilien Kintz

Documents are a core part of many businesses in many fields such as law, finance, and technology among others. Automatic understanding of documents such as invoices, contracts, and resumes is lucrative, opening up many new avenues of…

Computation and Language · Computer Science 2021-02-08 Nishant Subramani , Alexandre Matton , Malcolm Greaves , Adrian Lam

In today's technological era, document images play an important and integral part in our day to day life, and specifically with the surge of Covid-19, digitally scanned documents have become key source of communication, thus avoiding any…

Computer Vision and Pattern Recognition · Computer Science 2022-09-20 Dikshit Sharma , Mohammed Javed

Vast volumes of printed documents continue to be used for various important as well as trivial applications. Such applications often rely on the information provided in the form of printed text documents whose integrity verification poses a…

Computer Vision and Pattern Recognition · Computer Science 2020-03-31 Sharad Joshi , Suraj Saxena , Nitin Khanna

Many business documents processed in modern NLP and IR pipelines are visually rich: in addition to text, their semantics can also be captured by visual traits such as layout, format, and fonts. We study the problem of information extraction…

Computation and Language · Computer Science 2020-05-25 Mengxi Wei , Yifan He , Qiong Zhang

The biggest challenge in the field of image processing is to recognize documents both in printed and handwritten format. Optical Character Recognition OCR is a type of document image analysis where scanned digital image that contains either…

Computer Vision and Pattern Recognition · Computer Science 2016-12-05 Singh Vijendra , Nisha Vasudeva , Hem Jyotsana Parashar

Extracting key information from documents, such as receipts or invoices, and preserving the interested texts to structured data is crucial in the document-intensive streamline processes of office automation in areas that includes but not…

Computer Vision and Pattern Recognition · Computer Science 2019-06-21 Xiaohui Zhao , Endi Niu , Zhuo Wu , Xiaoguang Wang