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Deep convolutional neural networks (DCNNs) have achieved great success in various computer vision and pattern recognition applications, including those for handwritten Chinese character recognition (HCCR). However, most current DCNN-based…

Computer Vision and Pattern Recognition · Computer Science 2015-05-29 Weixin Yang , Lianwen Jin , Zecheng Xie , Ziyong Feng

Recognition of ancient Tamil characters has always been a challenge for epigraphers. This is primarily because the language has evolved over the several centuries and the character set over this time has both expanded and diversified. This…

Computer Vision and Pattern Recognition · Computer Science 2019-07-12 Lalitha Giridhar , Aishwarya Dharani and , Velmathi Guruviah

We introduce PaddleOCR-VL-1.5, an upgraded model achieving a new state-of-the-art (SOTA) accuracy of 94.5% on OmniDocBench v1.5. To rigorously evaluate robustness against real-world physical distortions, including scanning, skew, warping,…

Computer Vision and Pattern Recognition · Computer Science 2026-04-06 Cheng Cui , Ting Sun , Suyin Liang , Tingquan Gao , Zelun Zhang , Jiaxuan Liu , Xueqing Wang , Changda Zhou , Hongen Liu , Manhui Lin , Yue Zhang , Yubo Zhang , Yi Liu , Dianhai Yu , Yanjun Ma

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for understanding early modern Eastern Eurasian history, lacks effective OCR systems that can handle real-world historical documents.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

This technical report introduces PaddleOCR 3.0, an Apache-licensed open-source toolkit for OCR and document parsing. To address the growing demand for document understanding in the era of large language models, PaddleOCR 3.0 presents three…

Computer Vision and Pattern Recognition · Computer Science 2025-07-09 Cheng Cui , Ting Sun , Manhui Lin , Tingquan Gao , Yubo Zhang , Jiaxuan Liu , Xueqing Wang , Zelun Zhang , Changda Zhou , Hongen Liu , Yue Zhang , Wenyu Lv , Kui Huang , Yichao Zhang , Jing Zhang , Jun Zhang , Yi Liu , Dianhai Yu , Yanjun Ma

In this report, we propose PaddleOCR-VL, a SOTA and resource-efficient model tailored for document parsing. Its core component is PaddleOCR-VL-0.9B, a compact yet powerful vision-language model (VLM) that integrates a NaViT-style dynamic…

Computer Vision and Pattern Recognition · Computer Science 2025-11-26 Cheng Cui , Ting Sun , Suyin Liang , Tingquan Gao , Zelun Zhang , Jiaxuan Liu , Xueqing Wang , Changda Zhou , Hongen Liu , Manhui Lin , Yue Zhang , Yubo Zhang , Handong Zheng , Jing Zhang , Jun Zhang , Yi Liu , Dianhai Yu , Yanjun Ma

The adoption of tablets with touchscreens and styluses is increasing, and a key feature is converting handwriting to text, enabling search, indexing, and AI assistance. Meanwhile, vision-language models (VLMs) are now the go-to solution for…

Computer Vision and Pattern Recognition · Computer Science 2024-02-26 Anastasiia Fadeeva , Philippe Schlattner , Andrii Maksai , Mark Collier , Efi Kokiopoulou , Jesse Berent , Claudiu Musat

Large Language Models (LLMs) face significant challenges in specialized domains like law, where precision and domain-specific knowledge are critical. This paper presents a streamlined two-stage framework consisting of Retrieval and…

Information Retrieval · Computer Science 2025-07-22 Van-Hoang Le , Duc-Vu Nguyen , Kiet Van Nguyen , Ngan Luu-Thuy Nguyen

Handwritten text recognition is an open problem of great interest in the area of automatic document image analysis. The transcription of handwritten content present in digitized documents is significant in analyzing historical archives or…

Computer Vision and Pattern Recognition · Computer Science 2021-12-28 Jorge Sueiras

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…

Computer Vision and Pattern Recognition · Computer Science 2023-04-18 Abhishek Bamotra , Phani Krishna Uppala

Like other problems in computer vision, offline handwritten Chinese character recognition (HCCR) has achieved impressive results using convolutional neural network (CNN)-based methods. However, larger and deeper networks are needed to…

Computer Vision and Pattern Recognition · Computer Science 2017-02-28 Xuefeng Xiao , Lianwen Jin , Yafeng Yang , Weixin Yang , Jun Sun , Tianhai Chang

Deep learning based methods have been dominating the text recognition tasks in different and multilingual scenarios. The offline handwritten Chinese text recognition (HCTR) is one of the most challenging tasks because it involves thousands…

Computer Vision and Pattern Recognition · Computer Science 2020-06-30 Brian Liu , Xianchao Xu , Yu Zhang

Chinese calligraphy, a UNESCO Heritage, remains computationally challenging due to visual ambiguity and cultural complexity. Existing AI systems fail to contextualize their intricate scripts, because of limited annotated data and poor…

Computer Vision and Pattern Recognition · Computer Science 2026-01-07 Yuxuan Luo , Jiaqi Tang , Chenyi Huang , Feiyang Hao , Zhouhui Lian

Handwritten text recognition has been developed rapidly in the recent years, following the rise of deep learning and its applications. Though deep learning methods provide notable boost in performance concerning text recognition,…

Computer Vision and Pattern Recognition · Computer Science 2024-04-18 George Retsinas , Giorgos Sfikas , Basilis Gatos , Christophoros Nikou

Chinese ancient documents, invaluable carriers of millennia of Chinese history and culture, hold rich knowledge across diverse fields but face challenges in digitization and understanding, i.e., traditional methods only scan images, while…

Optical Character Recognition - Visual Question Answering (OCR-VQA) is the task of answering text information contained in images that have just been significantly developed in the English language in recent years. However, there are…

Computer Vision and Pattern Recognition · Computer Science 2024-04-30 Huy Quang Pham , Thang Kien-Bao Nguyen , Quan Van Nguyen , Dan Quang Tran , Nghia Hieu Nguyen , Kiet Van Nguyen , Ngan Luu-Thuy Nguyen

Document extraction is a core component of digital workflows, yet existing vision-language models (VLMs) predominantly favor high-resource languages. Thai presents additional challenges due to script complexity from non-latin letters, the…

Computation and Language · Computer Science 2026-01-22 Surapon Nonesung , Natapong Nitarach , Teetouch Jaknamon , Pittawat Taveekitworachai , Kunat Pipatanakul

Handwritten Chinese text recognition (HCTR) has been an active research topic for decades. However, most previous studies solely focus on the recognition of cropped text line images, ignoring the error caused by text line detection in…

Computer Vision and Pattern Recognition · Computer Science 2022-08-01 Dezhi Peng , Lianwen Jin , Yuliang Liu , Canjie Luo , Songxuan Lai

This paper describes our study on using mutilingual BERT embeddings and some new neural models for improving sequence tagging tasks for the Vietnamese language. We propose new model architectures and evaluate them extensively on two named…

Computation and Language · Computer Science 2020-09-28 Viet Bui The , Oanh Tran Thi , Phuong Le-Hong

In recent years, rapid advances in Multimodal Large Language Models (MLLMs) have increasingly stimulated research on ancient Chinese scripts. As the evolution of written characters constitutes a fundamental pathway for understanding…

Computation and Language · Computer Science 2026-04-14 Rui Song , Lida Shi , Ruihua Qi , Yingji Li , Hao Xu