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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

Tabular data in digital documents is widely used to express compact and important information for readers. However, it is challenging to parse tables from unstructured digital documents, such as PDFs and images, into machine-readable format…

Computer Vision and Pattern Recognition · Computer Science 2022-03-09 Bin Xiao , Murat Simsek , Burak Kantarci , Ala Abu Alkheir

Tables present summarized and structured information to the reader, which makes table structure extraction an important part of document understanding applications. However, table structure identification is a hard problem not only because…

Computer Vision and Pattern Recognition · Computer Science 2020-02-07 Saqib Ali Khan , Syed Muhammad Daniyal Khalid , Muhammad Ali Shahzad , Faisal Shafait

We introduce a new table detection and structure recognition approach named RobusTabNet to detect the boundaries of tables and reconstruct the cellular structure of each table from heterogeneous document images. For table detection, we…

Computer Vision and Pattern Recognition · Computer Science 2022-09-19 Chixiang Ma , Weihong Lin , Lei Sun , Qiang Huo

Table Structure Recognition is an essential part of end-to-end tabular data extraction in document images. The recent success of deep learning model architectures in computer vision remains to be non-reflective in table structure…

Computer Vision and Pattern Recognition · Computer Science 2021-05-18 Umar Khan , Sohaib Zahid , Muhammad Asad Ali , Adnan ul Hassan , Faisal Shafait

To address the challenges of table structure recognition, we propose a novel Split-Merge-based top-down model optimized for large, densely populated tables. Our approach formulates row and column splitting as sequence labeling tasks,…

Computer Vision and Pattern Recognition · Computer Science 2025-10-20 Qiyu Hou , Jun Wang

A table is an object that captures structured and informative content within a document, and recognizing a table in an image is challenging due to the complexity and variety of table layouts. Many previous works typically adopt a two-stage…

Computer Vision and Pattern Recognition · Computer Science 2023-05-02 Youngmin Baek , Daehyun Nam , Jaeheung Surh , Seung Shin , Seonghyeon Kim

Table recognition is using the computer to automatically understand the table, to detect the position of the table from the document or picture, and to correctly extract and identify the internal structure and content of the table. After…

Computer Vision and Pattern Recognition · Computer Science 2023-12-11 Shi Jiyuan , Shi chunqi

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

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

A table arranging data in rows and columns is a very effective data structure, which has been widely used in business and scientific research. Considering large-scale tabular data in online and offline documents, automatic table recognition…

Computer Vision and Pattern Recognition · Computer Science 2021-08-18 Wenyuan Xue , Baosheng Yu , Wen Wang , Dacheng Tao , Qingyong Li

Tables are pervasive in diverse documents, making table recognition (TR) a fundamental task in document analysis. Existing modular TR pipelines separately model table structure and content, leading to suboptimal integration and complex…

Computer Vision and Pattern Recognition · Computer Science 2026-03-25 Chunxia Qin , Chenyu Liu , Pengcheng Xia , Jun Du , Baocai Yin , Bing Yin , Cong Liu

In this paper, we propose a general approach to optimize anchor boxes for object detection. Nowadays, anchor boxes are widely adopted in state-of-the-art detection frameworks. However, these frameworks usually pre-define anchor box shapes…

Computer Vision and Pattern Recognition · Computer Science 2020-01-28 Yuanyi Zhong , Jianfeng Wang , Jian Peng , Lei Zhang

Table structure recognition is necessary for a comprehensive understanding of documents. Tables in unstructured business documents are tough to parse due to the high diversity of layouts, varying alignments of contents, and the presence of…

Computer Vision and Pattern Recognition · Computer Science 2021-11-16 Sachin Raja , Ajoy Mondal , C V Jawahar

An automatic table recognition method for interpretation of tabular data in document images majorly involves solving two problems of table detection and table structure recognition. The prior work involved solving both problems…

Computer Vision and Pattern Recognition · Computer Science 2020-05-29 Devashish Prasad , Ayan Gadpal , Kshitij Kapadni , Manish Visave , Kavita Sultanpure

Tabular structures are used to present crucial information in a structured and crisp manner. Detection of such regions is of great importance for proper understanding of a document. Tabular structures can be of various layouts and types.…

Computer Vision and Pattern Recognition · Computer Science 2020-08-28 Soumyadeep Dey , Jayanta Mukhopadhyay , Shamik Sural

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

Table structure recognition (TSR) holds widespread practical importance by parsing tabular images into structured representations, yet encounters significant challenges when processing complex layouts involving merged or empty cells.…

Computer Vision and Pattern Recognition · Computer Science 2026-04-20 Boming Chen , Zining Wang , Zhentao Guo , Jianqiang Liu , Chen Duan , Yu Gu , Kai zhou , Pengfei Yan

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

Table structure recognition is a crucial part of document image analysis domain. Its difficulty lies in the need to parse the physical coordinates and logical indices of each cell at the same time. However, the existing methods are…

Computer Vision and Pattern Recognition · Computer Science 2022-09-01 Zengyuan Guo , Yuechen Yu , Pengyuan Lv , Chengquan Zhang , Haojie Li , Zhihui Wang , Kun Yao , Jingtuo Liu , Jingdong Wang
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