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Recently, great progress has been made for online handwritten Chinese character recognition due to the emergence of deep learning techniques. However, previous research mostly treated each Chinese character as one class without explicitly…

Computer Vision and Pattern Recognition · Computer Science 2018-01-31 Jianshu Zhang , Yixing Zhu , Jun Du , Lirong Dai

Latin has historically led the state-of-the-art in handwritten optical character recognition (OCR) research. Adapting existing systems from Latin to alpha-syllabary languages is particularly challenging due to a sharp contrast between their…

Computer Vision and Pattern Recognition · Computer Science 2022-06-30 Samiul Alam , Tahsin Reasat , Asif Shahriyar Sushmit , Sadi Mohammad Siddiquee , Fuad Rahman , Mahady Hasan , Ahmed Imtiaz Humayun

In this paper, we introduce a model-based omnifont Persian OCR system. The system uses a set of 8 primitive elements as structural features for recognition. First, the scanned document is preprocessed. After normalizing the preprocessed…

Computer Vision and Pattern Recognition · Computer Science 2022-02-15 Azarakhsh Keipour , Mohammad Eshghi , Sina Mohammadzadeh Ghadikolaei , Negin Mohammadi , Shahab Ensafi

We implemented a high-performance optical character recognition model for classical handwritten documents using data augmentation with highly variable cropping within the document region. Optical character recognition in handwritten…

Computer Vision and Pattern Recognition · Computer Science 2024-12-17 Joonmo Ahna , Taehong Jang , Quan Fengnyu , Hyungil Lee , Jaehyuk Lee , Sojung Lucia Kim

Suppose an oracle knows a string $S$ that is unknown to us and that we want to determine. The oracle can answer queries of the form "Is $s$ a substring of $S$?". In 1995, Skiena and Sundaram showed that, in the worst case, any algorithm…

Data Structures and Algorithms · Computer Science 2021-10-20 Gabriele Fici , Nicola Prezza , Rossano Venturini

Optical character recognition (OCR) is a vital process that involves the extraction of handwritten or printed text from scanned or printed images, converting it into a format that can be understood and processed by machines. This enables…

Computer Vision and Pattern Recognition · Computer Science 2023-12-20 Mahmoud SalahEldin Kasem , Mohamed Mahmoud , Hyun-Soo Kang

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…

Computation and Language · Computer Science 2021-02-02 Lijun Lyu , Maria Koutraki , Martin Krickl , Besnik Fetahu

Chinese dynastic histories form a large continuous linguistic space of approximately 2000 years, from the 3rd century BCE to the 18th century CE. The histories are documented in Classical (Literary) Chinese in a corpus of over 20 million…

Computation and Language · Computer Science 2020-05-19 Sergey Zinin , Yang Xu

Chinese character recognition has attracted much research interest due to its wide applications. Although it has been studied for many years, some issues in this field have not been completely resolved yet, e.g. the zero-shot problem.…

Computer Vision and Pattern Recognition · Computer Science 2021-06-23 Jingye Chen , Bin Li , Xiangyang Xue

Optical character recognition (OCR) is a widely used pattern recognition application in numerous domains. There are several feature-rich, general-purpose OCR solutions available for consumers, which can provide moderate to excellent…

Computer Vision and Pattern Recognition · Computer Science 2021-05-18 Ayantha Randika , Nilanjan Ray , Xiao Xiao , Allegra Latimer

Handwritten character recognition is a hot topic for research nowadays. If we can convert a handwritten piece of paper into a text-searchable document using the Optical Character Recognition (OCR) technique, we can easily understand the…

Computer Vision and Pattern Recognition · Computer Science 2022-12-26 Md Tanvir Rouf Shawon , Raihan Tanvir , Md. Golam Rabiul Alam

This study presents a multi-modal multi-granularity tokenizer specifically designed for analyzing ancient Chinese scripts, focusing on the Chu bamboo slip (CBS) script used during the Spring and Autumn and Warring States period (771-256…

Computation and Language · Computer Science 2024-09-04 Yingfa Chen , Chenlong Hu , Cong Feng , Chenyang Song , Shi Yu , Xu Han , Zhiyuan Liu , Maosong Sun

Sanskrit is a classical language with about 30 million extant manuscripts fit for digitisation, available in written, printed or scannedimage forms. However, it is still considered to be a low-resource language when it comes to available…

Computation and Language · Computer Science 2022-11-16 Ayush Maheshwari , Nikhil Singh , Amrith Krishna , Ganesh Ramakrishnan

Optical character recognition (OCR) is a process of converting analogue documents into digital using document images. Currently, many commercial and non-commercial OCR systems exist for both handwritten and printed copies for different…

Computer Vision and Pattern Recognition · Computer Science 2021-05-11 Farisa Benta Safir , Abu Quwsar Ohi , M. F. Mridha , Muhammad Mostafa Monowar , Md. Abdul Hamid

Manchu, a critically endangered language essential for understanding early modern Eastern Eurasian history, lacks effective OCR systems that can handle real-world historical documents. This study develops high-performing OCR systems by…

Computer Vision and Pattern Recognition · Computer Science 2025-07-10 Yan Hon Michael Chung , Donghyeok Choi

Chinese characters carry a wealth of morphological and semantic information; therefore, the semantic enhancement of the morphology of Chinese characters has drawn significant attention. The previous methods were intended to directly extract…

Computer Vision and Pattern Recognition · Computer Science 2022-07-19 Zongze Chen , Wenxia Yang , Xin Li

A prototype system for the transliteration of diacritics-less Arabic manuscripts at the sub-word or part of Arabic word (PAW) level is developed. The system is able to read sub-words of the input manuscript using a set of skeleton-based…

Computer Vision and Pattern Recognition · Computer Science 2013-06-27 Reza Farrahi Moghaddam , Mohamed Cheriet , Thomas Milo , Robert Wisnovsky

Optical Character Recognition (OCR) for low-resource languages remains a significant challenge due to the scarcity of large-scale annotated training datasets. Languages such as Kashmiri, with approximately 7 million speakers and a complex…

Computation and Language · Computer Science 2026-01-23 Haq Nawaz Malik , Kh Mohmad Shafi , Tanveer Ahmad Reshi

In this paper, we address the task of Optical Character Recognition(OCR) for the Telugu script. We present an end-to-end framework that segments the text image, classifies the characters and extracts lines using a language model. The…

Machine Learning · Statistics 2017-02-16 Rakesh Achanta , Trevor Hastie

Comprehension of ancient texts plays an important role in archaeology and understanding of Chinese history and civilization. The rapid development of large language models needs benchmarks that can evaluate their comprehension of ancient…

Computation and Language · Computer Science 2025-12-22 Zhihan Zhou , Daqian Shi , Rui Song , Lida Shi , Xiaolei Diao , Hao Xu