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Conventional optical character recognition (OCR) techniques segmented each character and then recognized. This made them prone to error in character segmentation, and devoid of context to exploit language models. Advances in sequence to…

计算机视觉与模式识别 · 计算机科学 2025-09-01 Shashank Vempati , Nishit Anand , Gaurav Talebailkar , Arpan Garai , Chetan Arora

OCR (Optical Character Recognition) is a technology that offers comprehensive alphanumeric recognition of handwritten and printed characters at electronic speed by merely scanning the document. Recently, the understanding of visual data has…

计算机视觉与模式识别 · 计算机科学 2023-07-12 Atman Mishra , A. Sharath Ram , Kavyashree C

Optical character recognition (OCR) is crucial for a deeper access to historical collections. OCR needs to account for orthographic variations, typefaces, or language evolution (i.e., new letters, word spellings), as the main source of…

计算与语言 · 计算机科学 2021-02-02 Lijun Lyu , Maria Koutraki , Martin Krickl , Besnik Fetahu

There is little to no data available to build natural language processing models for most endangered languages. However, textual data in these languages often exists in formats that are not machine-readable, such as paper books and scanned…

计算与语言 · 计算机科学 2020-11-12 Shruti Rijhwani , Antonios Anastasopoulos , Graham Neubig

Having a reliable accuracy score is crucial for real world applications of OCR, since such systems are judged by the number of false readings. Lexicon-based OCR systems, which deal with what is essentially a multi-class classification…

计算机视觉与模式识别 · 计算机科学 2018-07-17 Noam Mor , Lior Wolf

We consider models for which it is important, early in processing, to estimate some variables with high precision, but perhaps at relatively low rates of recall. If some variables can be identified with near certainty, then they can be…

计算机视觉与模式识别 · 计算机科学 2009-07-03 Andrew Kae , Gary B. Huang , Erik Learned-Miller

In this paper, we propose a novel method based on character sequence-to-sequence models to correct documents already processed with Optical Character Recognition (OCR) systems. The main contribution of this paper is a set of strategies to…

计算与语言 · 计算机科学 2022-01-26 Juan Ramirez-Orta , Eduardo Xamena , Ana Maguitman , Evangelos Milios , Axel J. Soto

Word error rate of an ocr is often higher than its character error rate. This is especially true when ocrs are designed by recognizing characters. High word accuracies are critical to tasks like the creation of content in digital libraries…

计算机视觉与模式识别 · 计算机科学 2019-05-29 Deepayan Das , Jerin Philip , Minesh Mathew , C. V. Jawahar

In this paper, we evaluate state-of-the-art OCR methods on Egocentric data. We annotate text in EPIC-KITCHENS images, and demonstrate that existing OCR methods struggle with rotated text, which is frequently observed on objects being…

计算机视觉与模式识别 · 计算机科学 2022-06-14 Valentin Popescu , Dima Damen , Toby Perrett

There has been recent interest in improving optical character recognition (OCR) for endangered languages, particularly because a large number of documents and books in these languages are not in machine-readable formats. The performance of…

计算与语言 · 计算机科学 2023-02-28 Shruti Rijhwani , Daisy Rosenblum , Michayla King , Antonios Anastasopoulos , Graham Neubig

The study investigates the potential of post-OCR models to overcome limitations in OCR models and explores the impact of incorporating glyph embedding on post-OCR correction performance. In this study, we have developed our own post-OCR…

计算机视觉与模式识别 · 计算机科学 2023-08-30 Yung-Hsin Chen , Yuli Zhou

Optical Character Recognition (OCR) of eighteenth-century printed texts remains challenging due to degraded print quality, archaic glyphs, and non-standardized orthography. Although transformer-based OCR systems and Vision-Language Models…

计算机视觉与模式识别 · 计算机科学 2026-02-17 Ari Vesalainen , Eetu Mäkelä , Laura Ruotsalainen , Mikko Tolonen

Since the dawn of the computing era, information has been represented digitally so that it can be processed by electronic computers. Paper books and documents were abundant and widely being published at that time; and hence, there was a…

计算与语言 · 计算机科学 2012-04-03 Youssef Bassil , Mohammad Alwani

The problem of optical character recognition, OCR, has been widely discussed in the literature. Having a hand-written text, the program aims at recognizing the text. Even though there are several approaches to this issue, it is still an…

计算机视觉与模式识别 · 计算机科学 2014-11-07 Wei Wang

Optical character recognition (OCR) for historical documents is a complex procedure subject to a unique set of material issues, including inconsistencies in typefaces and low quality scanning. Consequently, even the most sophisticated OCR…

计算与语言 · 计算机科学 2020-04-27 Alberto Poncelas , Mohammad Aboomar , Jan Buts , James Hadley , Andy Way

Optical Character Recognition (OCR) technology finds applications in digitizing books and unstructured documents, along with applications in other domains such as mobility statistics, law enforcement, traffic, security systems, etc. The…

计算机视觉与模式识别 · 计算机科学 2023-07-11 Aishik Rakshit , Samyak Mehta , Anirban Dasgupta

Iterating with new and improved OCR solutions enforces decision making when it comes to targeting the right candidates for reprocessing. This especially applies when the underlying data collection is of considerable size and rather diverse…

计算与语言 · 计算机科学 2023-06-22 Pit Schneider , Yves Maurer

Some historical and more recent printed documents have been scanned or stored at very low resolutions, such as 60 dpi. Though such scans are relatively easy for humans to read, they still present significant challenges for optical character…

计算机视觉与模式识别 · 计算机科学 2021-05-11 Julian D. Gilbey , Carola-Bibiane Schönlieb

The objective of the paper is to recognize handwritten samples of lower case Roman script using Tesseract open source Optical Character Recognition (OCR) engine under Apache License 2.0. Handwritten data samples containing isolated and…

计算机视觉与模式识别 · 计算机科学 2010-03-31 Sandip Rakshit , Subhadip Basu

While OCR has been used in various applications, its output is not always accurate, leading to misfit words. This research work focuses on improving the optical character recognition (OCR) with ML techniques with integration of OCR with…

计算机视觉与模式识别 · 计算机科学 2023-04-18 Abhishek Bamotra , Phani Krishna Uppala