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Document structure extraction has been a widely researched area for decades. Recent work in this direction has been deep learning-based, mostly focusing on extracting structure using fully convolution NN through semantic segmentation. In…

Computer Vision and Pattern Recognition · Computer Science 2021-07-12 Milan Aggarwal , Mausoom Sarkar , Hiresh Gupta , Balaji Krishnamurthy

Document structure extraction has been a widely researched area for decades with recent works performing it as a semantic segmentation task over document images using fully-convolution networks. Such methods are limited by image resolution…

Machine Learning · Computer Science 2021-07-12 Milan Aggarwal , Hiresh Gupta , Mausoom Sarkar , Balaji Krishnamurthy

We present Multimodal OCR (MOCR), a document parsing paradigm that jointly parses text and graphics into unified textual representations. Unlike conventional OCR systems that focus on text recognition and leave graphical regions as cropped…

Tables are information-rich structured objects in document images. While significant work has been done in localizing tables as graphic objects in document images, only limited attempts exist on table structure recognition. Most existing…

Computer Vision and Pattern Recognition · Computer Science 2020-10-12 Sachin Raja , Ajoy Mondal , C. V. Jawahar

Forms are a common type of document in real life and carry rich information through textual contents and the organizational structure. To realize automatic processing of forms, word grouping and relation extraction are two fundamental and…

Computation and Language · Computer Science 2021-05-12 Zilong Wang , Mingjie Zhan , Houxing Ren , Zhaohui Hou , Yuwei Wu , Xingyan Zhang , Ding Liang

Form understanding is a challenging problem which aims to recognize semantic entities from the input document and their hierarchical relations. Previous approaches face significant difficulty dealing with the complexity of the task, thus…

Artificial Intelligence · Computer Science 2021-06-03 Tuan-Anh Nguyen Dang , Duc-Thanh Hoang , Quang-Bach Tran , Chih-Wei Pan , Thanh-Dat Nguyen

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

Retrieving relevant documents from a corpus is typically based on the semantic similarity between the document content and query text. The inclusion of structural relationship between documents can benefit the retrieval mechanism by…

Information Retrieval · Computer Science 2022-04-05 Natraj Raman , Sameena Shah , Manuela Veloso

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

Structure extraction from document images has been a long-standing research topic due to its high impact on a wide range of practical applications. In this paper, we share our findings on employing a hierarchical semantic segmentation…

Computer Vision and Pattern Recognition · Computer Science 2020-09-18 Mausoom Sarkar , Milan Aggarwal , Arneh Jain , Hiresh Gupta , Balaji Krishnamurthy

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 automatic recognition of tabular data in document images presents a significant challenge due to the diverse range of table styles and complex structures. Tables offer valuable content representation, enhancing the predictive…

Computer Vision and Pattern Recognition · Computer Science 2024-04-22 Avinash Anand , Raj Jaiswal , Pijush Bhuyan , Mohit Gupta , Siddhesh Bangar , Md. Modassir Imam , Rajiv Ratn Shah , Shin'ichi Satoh

This paper presents a groundbreaking multimodal, multi-task, multi-teacher joint-grained knowledge distillation model for visually-rich form document understanding. The model is designed to leverage insights from both fine-grained and…

Computation and Language · Computer Science 2024-07-29 Yihao Ding , Lorenzo Vaiani , Caren Han , Jean Lee , Paolo Garza , Josiah Poon , Luca Cagliero

We present an end-to-end, multimodal, fully convolutional network for extracting semantic structures from document images. We consider document semantic structure extraction as a pixel-wise segmentation task, and propose a unified model…

Computer Vision and Pattern Recognition · Computer Science 2017-06-09 Xiao Yang , Ersin Yumer , Paul Asente , Mike Kraley , Daniel Kifer , C. Lee Giles

Hierarchies allow feature sharing between objects at multiple levels of representation, can code exponential variability in a very compact way and enable fast inference. This makes them potentially suitable for learning and recognizing a…

Computer Vision and Pattern Recognition · Computer Science 2014-08-26 Sanja Fidler , Marko Boben , Ales Leonardis

Document-level relation extraction aims to extract relations among multiple entity pairs from a document. Previously proposed graph-based or transformer-based models utilize the entities independently, regardless of global information among…

Computation and Language · Computer Science 2023-01-27 Ningyu Zhang , Xiang Chen , Xin Xie , Shumin Deng , Chuanqi Tan , Mosha Chen , Fei Huang , Luo Si , Huajun Chen

Translating renderings (e. g. PDFs, scans) into hierarchical document structures is extensively demanded in the daily routines of many real-world applications. However, a holistic, principled approach to inferring the complete hierarchical…

Machine Learning · Computer Science 2021-01-26 Johannes Rausch , Octavio Martinez , Fabian Bissig , Ce Zhang , Stefan Feuerriegel

Information representation as tables are compact and concise method that eases searching, indexing, and storage requirements. Extracting and cloning tables from parsable documents is easier and widely used, however industry still faces…

Information Retrieval · Computer Science 2020-10-20 Smita Pallavi , Raj Ratn Pranesh , Sumit Kumar

Chemical structure extraction from documents remains a hard problem due to both false positive identification of structures during segmentation and errors in the predicted structures. Current approaches rely on handcrafted rules and…

Machine Learning · Computer Science 2018-02-15 Joshua Staker , Kyle Marshall , Robert Abel , Carolyn McQuaw

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
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