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This paper presents the design and development of an OCR-powered pipeline for efficient table extraction from invoices. The system leverages Tesseract OCR for text recognition and custom post-processing logic to detect, align, and extract…

Computer Vision and Pattern Recognition · Computer Science 2025-07-10 Parshva Dhilankumar Patel

Conventional Optical Character Recognition (OCR) systems are challenged by variant invoice layouts, handwritten text, and low-quality scans, which are often caused by strong template dependencies that restrict their flexibility across…

Computer Vision and Pattern Recognition · Computer Science 2026-01-09 Khushi Khanchandani , Advait Thakur , Akshita Shetty , Chaitravi Reddy , Ritisa Behera

With the widespread use of mobile phones and scanners to photograph and upload documents, the need for extracting the information trapped in unstructured document images such as retail receipts, insurance claim forms and financial invoices…

Computer Vision and Pattern Recognition · Computer Science 2020-01-07 Shubham Paliwal , Vishwanath D , Rohit Rahul , Monika Sharma , Lovekesh Vig

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

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

Inspired by the recent successes of deep learning on Computer Vision and Natural Language Processing, we present a deep learning approach for recognizing scanned receipts. The recognition system has two main modules: text detection based on…

Computer Vision and Pattern Recognition · Computer Science 2019-05-31 Anh Duc Le , Dung Van Pham , Tuan Anh Nguyen

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

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

While storing invoice content as metadata to avoid paper document processing may be the future trend, almost all of daily issued invoices are still printed on paper or generated in digital formats such as PDFs. In this paper, we introduce…

Computation and Language · Computer Science 2022-08-09 Hien Thi Ha , Aleš Horák

The performance of machine learning models for automated invoice processing is critically dependent on large-scale, diverse datasets. However, the acquisition of such datasets is often constrained by privacy regulations and the high cost of…

Computer Vision and Pattern Recognition · Computer Science 2025-08-07 Bevin V , Ananthakrishnan P , Ragesh KR , Sanjay M , Vineeth S , Bibin Wilson

In large organizations, the number of financial transactions can grow rapidly, driving the need for fast and accurate multi-criteria invoice validation. Manual processing remains error-prone and time-consuming, while current automated…

Computer Vision and Pattern Recognition · Computer Science 2025-03-18 Aziz Amari , Mariem Makni , Wissal Fnaich , Akram Lahmar , Fedi Koubaa , Oumayma Charrad , Mohamed Ali Zormati , Rabaa Youssef Douss

We present TNCR, a new table dataset with varying image quality collected from free websites. The TNCR dataset can be used for table detection in scanned document images and their classification into 5 different classes. TNCR contains 9428…

Computer Vision and Pattern Recognition · Computer Science 2021-12-30 Abdelrahman Abdallah , Alexander Berendeyev , Islam Nuradin , Daniyar Nurseitov

The automated analysis of administrative documents is an important field in document recognition that is studied for decades. Invoices are key documents among these huge amounts of documents available in companies and public services.…

Information Retrieval · Computer Science 2022-10-11 Thomas Saout , Frédéric Lardeux , Frédéric Saubion

The widespread use of charts and infographics as a means of data visualization in various domains has inspired recent research in automated chart understanding. However, information extraction from chart images is a complex multitasked…

Computer Vision and Pattern Recognition · Computer Science 2024-08-30 Osama Mustafa , Muhammad Khizer Ali , Momina Moetesum , Imran Siddiqi

Automatic table detection in PDF documents has achieved a great success but tabular data extraction are still challenging due to the integrity and noise issues in detected table areas. The accurate data extraction is extremely crucial in…

Computation and Language · Computer Science 2022-05-24 Siwen Luo , Mengting Wu , Yiwen Gong , Wanying Zhou , Josiah Poon

Automatic data extraction from charts is challenging for two reasons: there exist many relations among objects in a chart, which is not a common consideration in general computer vision problems; and different types of charts may not be…

Computer Vision and Pattern Recognition · Computer Science 2019-07-01 Xiaoyi Liu , Diego Klabjan , Patrick NBless

In this paper, we propose DEXTER, an end to end system to extract information from tables present in medical health documents, such as electronic health records (EHR) and explanation of benefits (EOB). DEXTER consists of four sub-system…

Computer Vision and Pattern Recognition · Computer Science 2022-07-19 Nandhinee PR , Harinath Krishnamoorthy , Koushik Srivatsan , Anil Goyal , Sudarsun Santhiappan

Recent proliferation in the field of Machine Learning and Deep Learning allows us to generate OCR models with higher accuracy. Optical Character Recognition(OCR) is the process of extracting text from documents and scanned images. For…

Computer Vision and Pattern Recognition · Computer Science 2020-09-15 Shreeshiv Patel , Dvijesh Bhatt

In existing visual representation learning tasks, deep convolutional neural networks (CNNs) are often trained on images annotated with single tags, such as ImageNet. However, a single tag cannot describe all important contents of one image,…

Computer Vision and Pattern Recognition · Computer Science 2020-02-11 Baoyuan Wu , Weidong Chen , Yanbo Fan , Yong Zhang , Jinlong Hou , Jie Liu , Tong Zhang

Table extraction has long been a pervasive problem in financial services. This is more challenging in the image domain, where content is locked behind cumbersome pixel format. Luckily, advances in deep learning for image segmentation, OCR,…

Computer Vision and Pattern Recognition · Computer Science 2024-05-10 William Watson , Bo Liu
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