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Handwritten mathematical expression recognition is a challenging problem due to the complicated two-dimensional structures, ambiguous handwriting input and variant scales of handwritten math symbols. To settle this problem, we utilize the…

Computer Vision and Pattern Recognition · Computer Science 2018-02-01 Jianshu Zhang , Jun Du , Lirong Dai

Handwritten mathematical expression recognition (HMER) is challenging in image-to-text tasks due to the complex layouts of mathematical expressions and suffers from problems including over-parsing and under-parsing. To solve these, previous…

Computer Vision and Pattern Recognition · Computer Science 2024-03-06 Yutian Liu , Wenjun Ke , Jianguo Wei

Offline Handwritten Mathematical Expression Recognition (HMER) is a major area in the field of mathematical expression recognition. Offline HMER is often viewed as a much harder problem as compared to online HMER due to a lack of temporal…

Computer Vision and Pattern Recognition · Computer Science 2022-08-23 Ujjwal Thakur , Anuj Sharma

Handwritten mathematical expression recognition (HMER) is a challenging task that has many potential applications. Recent methods for HMER have achieved outstanding performance with an encoder-decoder architecture. However, these methods…

Computer Vision and Pattern Recognition · Computer Science 2022-06-08 Ye Yuan , Xiao Liu , Wondimu Dikubab , Hui Liu , Zhilong Ji , Zhongqin Wu , Xiang Bai

This work proposes an attention-based sequence-to-sequence model for handwritten word recognition and explores transfer learning for data-efficient training of HTR systems. To overcome training data scarcity, this work leverages models…

Computer Vision and Pattern Recognition · Computer Science 2022-09-13 Dmitrijs Kass , Ekta Vats

Handwritten mathematical expression recognition (HMER) is an important research direction in handwriting recognition. The performance of HMER suffers from the two-dimensional structure of mathematical expressions (MEs). To address this…

Computer Vision and Pattern Recognition · Computer Science 2020-07-21 Zhe Li , Lianwen Jin , Songxuan Lai , Yecheng Zhu

In this paper, we propose a novel stroke constrained attention network (SCAN) which treats stroke as the basic unit for encoder-decoder based online handwritten mathematical expression recognition (HMER). Unlike previous methods which use…

Computer Vision and Pattern Recognition · Computer Science 2020-02-21 Jiaming Wang , Jun Du , Jianshu Zhang

Offline handwritten mathematical expression recognition is a challenging task, because handwritten mathematical expressions mainly have two problems in the process of recognition. On one hand, it is how to correctly recognize different…

Computer Vision and Pattern Recognition · Computer Science 2020-05-29 Guangcun Shan , Hongyu Wang , Wei Liang

Encoder-decoder models have made great progress on handwritten mathematical expression recognition recently. However, it is still a challenge for existing methods to assign attention to image features accurately. Moreover, those…

Computer Vision and Pattern Recognition · Computer Science 2021-05-18 Wenqi Zhao , Liangcai Gao , Zuoyu Yan , Shuai Peng , Lin Du , Ziyin Zhang

The task of recognising Handwritten Mathematical Expressions (HMER) is crucial in the fields of digital education and scholarly research. However, it is difficult to accurately determine the length and complex spatial relationships among…

Computer Vision and Pattern Recognition · Computer Science 2023-06-30 Aniket Pal , Krishna Pratap Singh

In this paper, we present a novel approach to Handwritten Mathematical Expression Recognition (HMER) by leveraging graph-based modeling techniques. We introduce an End-to-end model with an Edge-weighted Graph Attention Mechanism (EGAT),…

Computer Vision and Pattern Recognition · Computer Science 2024-10-25 Yejing Xie , Richard Zanibbi , Harold Mouchère

The use of artificial intelligence technology in education is growing rapidly, with increasing attention being paid to handwritten mathematical expression recognition (HMER) by researchers. However, many existing methods for HMER may fail…

Computer Vision and Pattern Recognition · Computer Science 2023-11-28 Ziqi Ye

Handwritten mathematical expression recognition aims to automatically generate LaTeX sequences from given images. Currently, attention-based encoder-decoder models are widely used in this task. They typically generate target sequences in a…

Computer Vision and Pattern Recognition · Computer Science 2022-02-24 Xiaohang Bian , Bo Qin , Xiaozhe Xin , Jianwu Li , Xuefeng Su , Yanfeng Wang

Offline Handwritten Mathematical Expression Recognition (HMER) has been dramatically advanced recently by employing tree decoders as part of the encoder-decoder method. Despite the tree decoder-based methods regard the expressions as a tree…

Computer Vision and Pattern Recognition · Computer Science 2023-03-14 Zihao Lin , Jinrong Li , Fan Yang , Shuangping Huang , Xu Yang , Jianmin Lin , Ming Yang

Recently, Handwritten Mathematical Expression Recognition (HMER) has gained considerable attention in pattern recognition for its diverse applications in document understanding. Current methods typically approach HMER as an…

Computer Vision and Pattern Recognition · Computer Science 2024-07-17 Chenyu Liu , Jia Pan , Jinshui Hu , Baocai Yin , Bing Yin , Mingjun Chen , Cong Liu , Jun Du , Qingfeng Liu

Recently, most handwritten mathematical expression recognition (HMER) methods adopt the encoder-decoder networks, which directly predict the markup sequences from formula images with the attention mechanism. However, such methods may fail…

Computer Vision and Pattern Recognition · Computer Science 2022-07-26 Bohan Li , Ye Yuan , Dingkang Liang , Xiao Liu , Zhilong Ji , Jinfeng Bai , Wenyu Liu , Xiang Bai

The Transformer-based encoder-decoder architecture has recently made significant advances in recognizing handwritten mathematical expressions. However, the transformer model still suffers from the lack of coverage problem, making its…

Computer Vision and Pattern Recognition · Computer Science 2022-07-19 Wenqi Zhao , Liangcai Gao

Handwritten Mathematical Expression Recognition (HMER) remains a persistent challenge in Optical Character Recognition (OCR) due to the inherent freedom of symbol layouts and variability in handwriting styles. Prior methods have faced…

Computer Vision and Pattern Recognition · Computer Science 2025-10-28 Yu Li , Jin Jiang , Jianhua Zhu , Shuai Peng , Baole Wei , Yuxuan Zhou , Liangcai Gao

Handwritten Mathematical Expression Recognition (HMER) has extensive applications in automated grading and office automation. However, existing sequence-based decoding methods, which directly predict $\LaTeX$ sequences, struggle to…

Computer Vision and Pattern Recognition · Computer Science 2024-12-12 Jianhua Zhu , Wenqi Zhao , Yu Li , Xingjian Hu , Liangcai Gao

Handwritten Mathematical Expression Recognition is foundational for educational technologies, enabling applications like digital note-taking and automated grading. While modern encoder-decoder architectures with large language models excel…

Computer Vision and Pattern Recognition · Computer Science 2025-08-28 Jakob Seitz , Tobias Lengfeld , Radu Timofte
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