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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 (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

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

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

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

Handwritten Mathematical Expression Recognition (HMER) has wide applications in human-machine interaction scenarios, such as digitized education and automated offices. Recently, sequence-based models with encoder-decoder architectures have…

Computer Vision and Pattern Recognition · Computer Science 2024-07-11 Tongkun Guan , Chengyu Lin , Wei Shen , Xiaokang Yang

This paper presents a temporal classification method for all three subtasks of symbol segmentation, symbol recognition and relation classification in online handwritten mathematical expressions (HMEs). The classification model is trained by…

Computer Vision and Pattern Recognition · Computer Science 2021-05-24 Cuong Tuan Nguyen , Thanh-Nghia Truong , Hung Tuan Nguyen , Masaki Nakagawa

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

Recognizing handwritten mathematical expressions (HMER) is a challenging task due to the inherent two-dimensional structure, varying symbol scales, and complex spatial relationships among symbols. In this paper, we present a self-supervised…

Computer Vision and Pattern Recognition · Computer Science 2025-09-01 Shree Mitra , Ritabrata Chakraborty , Nilkanta Sahu

This paper proposes a method for recognizing online handwritten mathematical expressions (OnHME) by building a symbol relation tree (SRT) directly from a sequence of strokes. A bidirectional recurrent neural network learns from multiple…

Computer Vision and Pattern Recognition · Computer Science 2021-05-14 Thanh-Nghia Truong , Hung Tuan Nguyen , Cuong Tuan Nguyen , Masaki Nakagawa

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 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

Automatic speech recognition (ASR) systems normally consist of an acoustic model (AM) and a language model (LM). The acoustic model estimates the probability distribution of text given the input speech, while the language model calibrates…

Computation and Language · Computer Science 2025-06-17 Qingliang Meng , Pengju Ren , Tian Li , Changsong Dai , Huizhi Liang

Recognition of Handwritten Mathematical Expressions (HMEs) is a challenging problem because of the ambiguity and complexity of two-dimensional handwriting. Moreover, the lack of large training data is a serious issue, especially for…

Computer Vision and Pattern Recognition · Computer Science 2019-01-23 Anh Duc Le , Bipin Indurkhya , Masaki Nakagawa

Large foundation models have achieved significant performance gains through scalable training on massive datasets. However, the field of \textbf{H}andwritten \textbf{M}athematical \textbf{E}xpression \textbf{R}ecognition (HMER) has been…

Computer Vision and Pattern Recognition · Computer Science 2026-01-13 Haoyang Li , Jiaqing Li , Jialun Cao , Zongyuan Yang , Yongping Xiong

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

Handwritten mathematical expression recognition (HMER) has attracted extensive attention recently. However, current methods cannot explicitly study the interactions between different symbols, which may fail when faced similar symbols. To…

Computer Vision and Pattern Recognition · Computer Science 2023-08-22 Zhuang Liu , Ye Yuan , Zhilong Ji , Jingfeng Bai , Xiang Bai

With the rapid advancement of Neural Machine Translation (NMT), enhancing translation efficiency and quality has become a focal point of research. Despite the commendable performance of general models such as the Transformer in various…

Computation and Language · Computer Science 2024-02-26 Jingpu Yang , Zehua Han , Mengyu Xiang , Helin Wang , Yuxiao Huang , Miao Fang

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

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
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