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We introduce a general detection-based approach to text line recognition, be it printed (OCR) or handwritten (HTR), with Latin, Chinese, or ciphered characters. Detection-based approaches have until now been largely discarded for HTR…

Computer Vision and Pattern Recognition · Computer Science 2025-03-10 Raphael Baena , Syrine Kalleli , Mathieu Aubry

Handwritten document recognition (HDR) is one of the most challenging tasks in the field of computer vision, due to the various writing styles and complex layouts inherent in handwritten texts. Traditionally, this problem has been…

Computer Vision and Pattern Recognition · Computer Science 2024-12-30 Mohammed Hamdan , Abderrahmane Rahiche , Mohamed Cheriet

Optical Character Recognition (OCR) is essential in applications such as document processing, license plate recognition, and intelligent surveillance. However, existing OCR models often underperform in real-world scenarios due to irregular…

Computer Vision and Pattern Recognition · Computer Science 2025-04-09 Inho Jake Park , Jaehoon Jay Jeong , Ho-Sang Jo

The Linear Representation Hypothesis (LRH) states that neural networks learn to encode concepts as directions in activation space, and a strong version of the LRH states that models learn only such encodings. In this paper, we present a…

Machine Learning · Computer Science 2024-08-21 Róbert Csordás , Christopher Potts , Christopher D. Manning , Atticus Geiger

We present recursive recurrent neural networks with attention modeling (R$^2$AM) for lexicon-free optical character recognition in natural scene images. The primary advantages of the proposed method are: (1) use of recursive convolutional…

Computer Vision and Pattern Recognition · Computer Science 2016-03-11 Chen-Yu Lee , Simon Osindero

Multi-modal models have shown appealing performance in visual recognition tasks, as free-form text-guided training evokes the ability to understand fine-grained visual content. However, current models cannot be trivially applied to scene…

Computer Vision and Pattern Recognition · Computer Science 2025-01-03 Yongkun Du , Zhineng Chen , Yuchen Su , Caiyan Jia , Yu-Gang Jiang

Continual learning in transformers is commonly addressed through parameter-efficient adaptation: prompts, adapters, or LoRA modules are specialized per task while the backbone remains frozen. Although effective in controlled multi-epoch…

Machine Learning · Computer Science 2026-03-11 Alessio Masano , Giovanni Bellitto , Dipam Goswani , Joost Van de Weijer , Concetto Spampinato

This paper proposes a novel framework for detecting redundancy in supervised sentence categorisation. Unlike traditional singleton neural network, our model incorporates character-aware convolutional neural network (Char-CNN) with…

Computation and Language · Computer Science 2017-06-06 Xinyu Fu , Eugene Ch'ng , Uwe Aickelin , Simon See

We present a method for learning discriminative filters using a shallow Convolutional Neural Network (CNN). We encode rotation invariance directly in the model by tying the weights of groups of filters to several rotated versions of the…

Computer Vision and Pattern Recognition · Computer Science 2017-05-03 Diego Marcos , Michele Volpi , Devis Tuia

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

In this paper, we propose a novel method called Rotational Region CNN (R2CNN) for detecting arbitrary-oriented texts in natural scene images. The framework is based on Faster R-CNN [1] architecture. First, we use the Region Proposal Network…

Computer Vision and Pattern Recognition · Computer Science 2017-07-03 Yingying Jiang , Xiangyu Zhu , Xiaobing Wang , Shuli Yang , Wei Li , Hua Wang , Pei Fu , Zhenbo Luo

An unconstrained end-to-end text localization and recognition method is presented. The method detects initial text hypothesis in a single pass by an efficient region-based method and subsequently refines the text hypothesis using a more…

Computer Vision and Pattern Recognition · Computer Science 2015-04-15 Lukáš Neumann , Jiří Matas

Rotation detection serves as a fundamental building block in many visual applications involving aerial image, scene text, and face etc. Differing from the dominant regression-based approaches for orientation estimation, this paper explores…

Computer Vision and Pattern Recognition · Computer Science 2021-05-26 Xue Yang , Liping Hou , Yue Zhou , Wentao Wang , Junchi Yan

Offline handwriting recognition with deep neural networks is usually limited to words or lines due to large computational costs. In this paper, a less computationally expensive full page offline handwritten text recognition framework is…

Computer Vision and Pattern Recognition · Computer Science 2020-05-12 Jonathan Chung , Thomas Delteil

Introduction of Convolutional Neural Networks has improved results on almost every image-based problem and Content-Based Image Retrieval is not an exception. But the CNN features, being rotation invariant, creates problems to build a…

Computer Vision and Pattern Recognition · Computer Science 2020-06-24 Subhadip Maji , Smarajit Bose

Handwritten Word Recognition and Spotting is a challenging field dealing with handwritten text possessing irregular and complex shapes. The design of deep neural network models makes it necessary to extend training datasets in order to…

Computer Vision and Pattern Recognition · Computer Science 2019-02-26 Ayan Kumar Bhunia , Abhirup Das , Ankan Kumar Bhunia , Perla Sai Raj Kishore , Partha Pratim Roy

In this paper, we propose a context-aware keyword spotting model employing a character-level recurrent neural network (RNN) for spoken term detection in continuous speech. The RNN is end-to-end trained with connectionist temporal…

Computation and Language · Computer Science 2015-12-31 Kyuyeon Hwang , Minjae Lee , Wonyong Sung

Neural networks exhibit severe brittleness to semantically irrelevant transformations. A mere 75ms electrocardiogram (ECG) phase shift degrades latent cosine similarity from 1.0 to 0.2, while sensor rotations collapse activity recognition…

Machine Learning · Computer Science 2025-11-20 Zhengyang Shen , Hua Tu , Mayue Shi

Stroke classification remains challenging due to variations in writing style, ambiguous content, and dynamic writing positions. The core challenge in stroke classification is modeling the semantic relationships between strokes. Our…

Computer Vision and Pattern Recognition · Computer Science 2025-12-09 Yiheng Huang , Shuang She , Zewei Wei , Jianmin Lin , Ming Yang , Wenyin Liu

In this research, we present a heuristic method for character recognition. For this purpose, a sketch is constructed from the image that contains the character to be recognized. This sketch contains the most important pixels of image that…

Computer Vision and Pattern Recognition · Computer Science 2016-08-05 Masoud Nosrati , Fakhereh Rahimi , Ronak Karimi