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Document images are now widely captured by handheld devices such as mobile phones. The OCR performance on these images are largely affected due to geometric distortion of the document paper, diverse camera positions and complex backgrounds.…

Computer Vision and Pattern Recognition · Computer Science 2022-03-22 Guo-Wang Xie , Fei Yin , Xu-Yao Zhang , Cheng-Lin Liu

Many studies on (Offline) Handwritten Text Recognition (HTR) systems have focused on building state-of-the-art models for line recognition on small corpora. However, adding HTR capability to a large scale multilingual OCR system poses new…

Computer Vision and Pattern Recognition · Computer Science 2019-06-18 R. Reeve Ingle , Yasuhisa Fujii , Thomas Deselaers , Jonathan Baccash , Ashok C. Popat

Knowledge extraction through sound is a distinctive property. Visually impaired individuals often rely solely on Braille books and audio recordings provided by NGOs. Due to limitations in these approaches, blind individuals often cannot…

Sound · Computer Science 2025-06-19 Prateek Mehta , Anasuya Patil

A great deal of historical corpora suffer from errors introduced by the OCR (optical character recognition) methods used in the digitization process. Correcting these errors manually is a time-consuming process and a great part of the…

Computation and Language · Computer Science 2020-07-23 Mika Hämäläinen , Simon Hengchen

In recent years, tremendous efforts have been made on document image rectification, but existing advanced algorithms are limited to processing restricted document images, i.e., the input images must incorporate a complete document. Once the…

Computer Vision and Pattern Recognition · Computer Science 2023-12-19 Hao Feng , Shaokai Liu , Jiajun Deng , Wengang Zhou , Houqiang Li

Offline Handwritten Text Recognition (HTR) systems play a crucial role in applications such as historical document digitization, automatic form processing, and biometric authentication. However, their performance is often hindered by the…

Computer Vision and Pattern Recognition · Computer Science 2025-07-10 Yassin Hussein Rassul , Aram M. Ahmed , Polla Fattah , Bryar A. Hassan , Arwaa W. Abdulkareem , Tarik A. Rashid , Joan Lu

This paper presents the first end-to-end pipeline for Handwritten Text Recognition (HTR) for Old Nepali, a historically significant but low-resource language. We adopt a line-level transcription approach and systematically explore…

Machine Learning · Computer Science 2026-04-29 Anjali Sarawgi , Esteban Garces Arias , Christof Zotter

Today all kind of information is getting digitized and along with all this digitization, the huge archive of various kinds of documents is being digitized too. We know that, Optical Character Recognition is the method through which,…

Computer Vision and Pattern Recognition · Computer Science 2017-01-31 Md. Fahad Hasan , Tasmin Afroz , Sabir Ismail , Md. Saiful Islam

Optical character recognition (OCR) methods have been applied to diverse tasks, e.g., street view text recognition and document analysis. Recently, zero-shot OCR has piqued the interest of the research community because it considers a…

Computer Vision and Pattern Recognition · Computer Science 2023-08-02 Xiaolei Diao , Daqian Shi , Jian Li , Lida Shi , Mingzhe Yue , Ruihua Qi , Chuntao Li , Hao Xu

Computer-Assisted Pronunciation Training (CAPT) has been extensively studied for English. However, there remains a critical gap in its application to Indian languages with a base of 1.5 billion speakers. Pronunciation tools tailored to…

Audio and Speech Processing · Electrical Eng. & Systems 2025-06-04 Arnav Rustagi , Satvik Bajpai , Nimrat Kaur , Siddharth Siddharth

This paper proposes a combination of a convolutional and a LSTM network to improve the accuracy of OCR on early printed books. While the standard model of line based OCR uses a single LSTM layer, we utilize a CNN- and Pooling-Layer…

Computer Vision and Pattern Recognition · Computer Science 2018-02-28 Christoph Wick , Christian Reul , Frank Puppe

Optical Character Recognition (OCR) is the process of extracting digitized text from images of scanned documents. While OCR systems have already matured in many languages, they still have shortcomings in cursive languages with overlapping…

Computer Vision and Pattern Recognition · Computer Science 2020-09-22 Hussein Osman , Karim Zaghw , Mostafa Hazem , Seifeldin Elsehely

The development of large vision language models drives the demand for managing, and applying massive amounts of multimodal data, making OCR technology, which extracts information from visual images, increasingly popular. However, existing…

Computer Vision and Pattern Recognition · Computer Science 2026-02-05 Yufeng Zhong , Lei Chen , Xuanle Zhao , Wenkang Han , Liming Zheng , Jing Huang , Deyang Jiang , Yilin Cao , Lin Ma , Zhixiong Zeng

This paper presents a new approach to the problem of correcting speech recognition errors by means of post-editing. It consists of using a neural sequence tagger that learns how to correct an ASR (Automatic Speech Recognition) hypothesis…

Computation and Language · Computer Science 2024-06-13 Tomasz Ziętkiewicz

Optical character recognition (OCR) has evolved from line-level transcription to structured document parsing, requiring models to recover long-form sequences containing layout, tables, and formulas. Despite recent advances in…

Computer Vision and Pattern Recognition · Computer Science 2026-03-25 Hejun Dong , Junbo Niu , Bin Wang , Weijun Zeng , Wentao Zhang , Conghui He

Scene text recognition (STR) and handwritten text recognition (HTR) face significant challenges in accurately transcribing textual content from images into machine-readable formats. Conventional OCR models often predict transcriptions…

Computer Vision and Pattern Recognition · Computer Science 2026-03-05 Xu Yao , Lei Kang

Generative retrieval (GR) reframes document retrieval as an end-to-end task of generating sequential document identifiers (DocIDs). Existing GR methods predominantly rely on left-to-right auto-regressive decoding, which suffers from two…

Information Retrieval · Computer Science 2026-02-04 Xinpeng Zhao , Zhaochun Ren , Yukun Zhao , Zhenyang Li , Mengqi Zhang , Jun Feng , Ran Chen , Ying Zhou , Zhumin Chen , Shuaiqiang Wang , Dawei Yin , Xin Xin

Long-tail question answering presents significant challenges for large language models (LLMs) due to their limited ability to acquire and accurately recall less common knowledge. Retrieval-augmented generation (RAG) systems have shown great…

Computation and Language · Computer Science 2026-02-20 Yiming Zhang , Siyue Zhang , Junbo Zhao , Chen Zhao

Telugu is a Dravidian language spoken by more than 80 million people worldwide. The optical character recognition (OCR) of the Telugu script has wide ranging applications including education, health-care, administration etc. The beautiful…

Computer Vision and Pattern Recognition · Computer Science 2018-12-27 Chandra Prakash Konkimalla , Manikanta Srikar Yellapragada , Trishal Gayam , Souraj Mandal , Sumohana S. Channappayya

Document parsing is a core task in document intelligence, supporting applications such as information extraction, retrieval-augmented generation, and automated document analysis. However, real-world documents often feature complex layouts…