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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

As global trends are shifting towards data-driven industries, the demand for automated algorithms that can convert digital images of scanned documents into machine readable information is rapidly growing. Besides the opportunity of data…

Computer Vision and Pattern Recognition · Computer Science 2021-05-25 Pascal Fischer , Alen Smajic , Alexander Mehler , Giuseppe Abrami

We present TableBank, a new image-based table detection and recognition dataset built with novel weak supervision from Word and Latex documents on the internet. Existing research for image-based table detection and recognition usually…

Computer Vision and Pattern Recognition · Computer Science 2020-07-07 Minghao Li , Lei Cui , Shaohan Huang , Furu Wei , Ming Zhou , Zhoujun Li

Documents are often used for knowledge sharing and preservation in business and science, within which are tables that capture most of the critical data. Unfortunately, most documents are stored and distributed as PDF or scanned images,…

Computer Vision and Pattern Recognition · Computer Science 2020-12-03 Xinyi Zheng , Doug Burdick , Lucian Popa , Xu Zhong , Nancy Xin Ru Wang

We present a novel deep-learning-based method to cluster words in documents which we apply to detect and recognize tables given the OCR output. We interpret table structure bottom-up as a graph of relations between pairs of words (belonging…

Machine Learning · Computer Science 2024-05-24 Marek Polewczyk , Marco Spinaci

With the advent of mobile and hand-held cameras, document images have found their way into almost every domain. Dewarping of these images for the removal of perspective distortions and folds is essential so that they can be understood by…

Computer Vision and Pattern Recognition · Computer Science 2021-02-03 Hmrishav Bandyopadhyay , Tanmoy Dasgupta , Nibaran Das , Mita Nasipuri

Structured data extraction from tables plays a crucial role in document image analysis for scanned documents and digital archives. Although many methods have been proposed to detect table structures and extract cell contents, accurately…

Computer Vision and Pattern Recognition · Computer Science 2025-12-25 Suren Bandara

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

Spreadsheet table detection is the task of detecting all tables on a given sheet and locating their respective ranges. Automatic table detection is a key enabling technique and an initial step in spreadsheet data intelligence. However, the…

Information Retrieval · Computer Science 2021-06-28 Haoyu Dong , Shijie Liu , Shi Han , Zhouyu Fu , Dongmei Zhang

Image-based table recognition is a challenging task due to the diversity of table styles and the complexity of table structures. Most of the previous methods focus on a non-end-to-end approach which divides the problem into two separate…

Computer Vision and Pattern Recognition · Computer Science 2023-03-30 Nam Tuan Ly , Atsuhiro Takasu

A significant portion of the data available today is found within tables. Therefore, it is necessary to use automated table extraction to obtain thorough results when data-mining. Today's popular state-of-the-art methods for table…

Information Retrieval · Computer Science 2021-04-26 Zach Colter , Morteza Fayazi , Zineb Benameur-El , Serafina Kamp , Shuyan Yu , Ronald Dreslinski

Network embedding is a highly effective method to learn low-dimensional node vector representations with original network structures being well preserved. However, existing network embedding algorithms are mostly developed for a single…

Social and Information Networks · Computer Science 2021-05-06 Xiao Shen , Quanyu Dai , Sitong Mao , Fu-lai Chung , Kup-Sze Choi

Deep learning architecture with convolutional neural network (CNN) achieves outstanding success in the field of computer vision. Where U-Net, an encoder-decoder architecture structured by CNN, makes a great breakthrough in biomedical image…

Image and Video Processing · Electrical Eng. & Systems 2023-02-13 Qing Xu , Zhicheng Ma , Na HE , Wenting Duan

This paper presents a new state-of-the-art for document image classification and retrieval, using features learned by deep convolutional neural networks (CNNs). In object and scene analysis, deep neural nets are capable of learning a…

Computer Vision and Pattern Recognition · Computer Science 2015-02-26 Adam W. Harley , Alex Ufkes , Konstantinos G. Derpanis

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

Existing state-of-the-art salient object detection networks rely on aggregating multi-level features of pre-trained convolutional neural networks (CNNs). Compared to high-level features, low-level features contribute less to performance but…

Computer Vision and Pattern Recognition · Computer Science 2019-04-19 Zhe Wu , Li Su , Qingming Huang

It is important, but challenging, for the forest industry to accurately map roads which are used for timber transport by trucks. In this work, we propose a Dense Dilated Convolutions Merging Network (DDCM-Net) to detect these roads in lidar…

Computer Vision and Pattern Recognition · Computer Science 2019-09-11 Qinghui Liu , Michael Kampffmeyer , Robert Jenssen , Arnt-Børre Salberg

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

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

A correct localisation of tables in a document is instrumental for determining their structure and extracting their contents; therefore, table detection is a key step in table understanding. Nowadays, the most successful methods for table…

Computer Vision and Pattern Recognition · Computer Science 2019-12-13 Ángela Casado-García , César Domínguez , Jónathan Heras , Eloy Mata , Vico Pascual