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Handwritten signature verification poses a formidable challenge in biometrics and document authenticity. The objective is to ascertain the authenticity of a provided handwritten signature, distinguishing between genuine and forged ones.…

Computer Vision and Pattern Recognition · Computer Science 2024-01-19 Fatih Ozyurt , Jafar Majidpour , Tarik A. Rashid , Canan Koc

This paper introduces an innovative keypoint detection technique based on Convolutional Neural Networks (CNNs) to enhance the performance of existing Deep Visual Servoing (DVS) models. To validate the convergence of the Image-Based Visual…

Robotics · Computer Science 2024-09-23 Niloufar Amiri , Guanghui Wang , Farrokh Janabi-Sharifi

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

By representing a text by a set of words and their co-occurrences, one obtains a word-adjacency network being a reduced representation of a given language sample. In this paper, the possibility of using network representation to extract…

Computation and Language · Computer Science 2019-01-18 Tomasz Stanisz , Jarosław Kwapień , Stanisław Drożdż

Graph Convolutional Networks (GCNs) have shown strong performance in learning text representations for various tasks such as text classification, due to its expressive power in modeling graph structure data (e.g., a literature citation…

Computation and Language · Computer Science 2023-05-12 Zhibin Lu , Qianqian Xie , Benyou Wang , Jian-yun Nie

Air-writing refers to virtually writing linguistic characters through hand gestures in three-dimensional space with six degrees of freedom. This paper proposes a generic video camera-aided convolutional neural network (CNN) based…

Computer Vision and Pattern Recognition · Computer Science 2025-02-19 Prasun Roy , Subhankar Ghosh , Umapada Pal

We present an object detection based approach to localize handwritten regions from documents, which initially aims to enhance the anonymization during the data transmission. The concatenated fusion of original and preprocessed images…

Computer Vision and Pattern Recognition · Computer Science 2026-02-23 Yuli Wu , Yucheng Hu , Suting Miao

Scene text recognition has attracted great interests from the computer vision and pattern recognition community in recent years. State-of-the-art methods use concolutional neural networks (CNNs), recurrent neural networks with long…

Computer Vision and Pattern Recognition · Computer Science 2017-09-07 Fei Yin , Yi-Chao Wu , Xu-Yao Zhang , Cheng-Lin Liu

Research on Offline Handwritten Signature Verification explored a large variety of handcrafted feature extractors, ranging from graphology, texture descriptors to interest points. In spite of advancements in the last decades, performance of…

Computer Vision and Pattern Recognition · Computer Science 2017-05-17 Luiz G. Hafemann , Robert Sabourin , Luiz S. Oliveira

Online handwriting recognition has been studied for a long time with only few practicable results when writing on normal paper. Previous approaches using sensor-based devices encountered problems that limited the usage of the developed…

Machine Learning · Computer Science 2021-07-09 Mohamad Wehbi , Tim Hamann , Jens Barth , Bjoern Eskofier

Predicting attributes from face images in the wild is a challenging computer vision problem. To automatically describe face attributes from face containing images, traditionally one needs to cascade three technical blocks --- face…

Computer Vision and Pattern Recognition · Computer Science 2016-06-22 Yang Zhong , Josephine Sullivan , Haibo Li

A novel, generic scheme for off-line handwritten English alphabets character images is proposed. The advantage of the technique is that it can be applied in a generic manner to different applications and is expected to perform better in…

Computer Vision and Pattern Recognition · Computer Science 2010-07-01 Sandhya Arora , Latesh Malik , Debotosh Bhattacharjee , Mita Nasipuri

Most existing online writer-identification systems require that the text content is supplied in advance and rely on separately designed features and classifiers. The identifications are based on lines of text, entire paragraphs, or entire…

Computer Vision and Pattern Recognition · Computer Science 2015-05-20 Weixin Yang , Lianwen Jin , Manfei Liu

In the early days, content-based image retrieval (CBIR) was studied with global features. Since 2003, image retrieval based on local descriptors (de facto SIFT) has been extensively studied for over a decade due to the advantage of SIFT in…

Computer Vision and Pattern Recognition · Computer Science 2017-05-24 Liang Zheng , Yi Yang , Qi Tian

In this paper, we propose a novel approach for text detec- tion in natural images. Both local and global cues are taken into account for localizing text lines in a coarse-to-fine pro- cedure. First, a Fully Convolutional Network (FCN) model…

Computer Vision and Pattern Recognition · Computer Science 2016-04-19 Zheng Zhang , Chengquan Zhang , Wei Shen , Cong Yao , Wenyu Liu , Xiang Bai

Deep Convolutional Neural Networks (CNN) have shown great success in supervised classification tasks such as character classification or dating. Deep learning methods typically need a lot of annotated training data, which is not available…

Computer Vision and Pattern Recognition · Computer Science 2024-02-28 Vincent Christlein , Martin Gropp , Stefan Fiel , Andreas Maier

Verifying the identity of a person using handwritten signatures is challenging in the presence of skilled forgeries, where a forger has access to a person's signature and deliberately attempt to imitate it. In offline (static) signature…

Computer Vision and Pattern Recognition · Computer Science 2017-05-17 Luiz G. Hafemann , Robert Sabourin , Luiz S. Oliveira

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

Writer identification (writer-id), an important field in biometrics, aims to identify a writer by their handwriting. Identification in existing writer-id studies requires a complete document or text, limiting the scalability and flexibility…

Computer Vision and Pattern Recognition · Computer Science 2021-12-07 Zelin Chen , Hong-Xing Yu , Ancong Wu , Wei-Shi Zheng

Although secular, handwritten signature is one of the most reliable biometric methods used by most countries. In the last ten years, the application of technology for verification of handwritten signatures has evolved strongly, including…

Computer Vision and Pattern Recognition · Computer Science 2020-06-01 Celso A. M. Lopes Junior , Matheus Henrique M. da Silva , Byron Leite Dantas Bezerra , Bruno Jose Torres Fernandes , Donato Impedovo