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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

The rapid progress in synthetic image generation and manipulation has now come to a point where it raises significant concerns for the implications towards society. At best, this leads to a loss of trust in digital content, but could…

Computer Vision and Pattern Recognition · Computer Science 2019-08-27 Andreas Rössler , Davide Cozzolino , Luisa Verdoliva , Christian Riess , Justus Thies , Matthias Nießner

Deep metric learning aims to learn embeddings that contain semantic similarity information among data points. To learn better embeddings, methods to generate synthetic hard samples have been proposed. Existing methods of synthetic hard…

Computer Vision and Pattern Recognition · Computer Science 2020-04-24 Geonmo Gu , Byungsoo Ko

This paper presents a comprehensive workflow for generating and validating a synthetic dataset designed for robotic surgery instrument segmentation. A 3D reconstruction of the Da Vinci robotic arms was refined and animated in Autodesk Maya…

Computer Vision and Pattern Recognition · Computer Science 2026-02-17 Giorgio Chiesa , Rossella Borra , Vittorio Lauro , Sabrina De Cillis , Daniele Amparore , Cristian Fiori , Riccardo Renzulli , Marco Grangetto

Learning fine-grained movements is a challenging topic in robotics, particularly in the context of robotic hands. One specific instance of this challenge is the acquisition of fingerspelling sign language in robots. In this paper, we…

Robotics · Computer Science 2024-07-25 Federico Tavella , Aphrodite Galata , Angelo Cangelosi

Recent generative models demonstrate impressive performance on synthesizing photographic images, which makes humans hardly to distinguish them from pristine ones, especially on realistic-looking synthetic facial images. Previous works…

Computer Vision and Pattern Recognition · Computer Science 2025-01-15 Hao Wang , Cheng Deng , Zhidong Zhao

Training a deep network to perform semantic segmentation requires large amounts of labeled data. To alleviate the manual effort of annotating real images, researchers have investigated the use of synthetic data, which can be labeled…

Computer Vision and Pattern Recognition · Computer Science 2018-07-18 Fatemeh Sadat Saleh , Mohammad Sadegh Aliakbarian , Mathieu Salzmann , Lars Petersson , Jose M. Alvarez

In human learning, it is common to use multiple sources of information jointly. However, most existing feature learning approaches learn from only a single task. In this paper, we propose a novel multi-task deep network to learn…

Computer Vision and Pattern Recognition · Computer Science 2017-11-27 Zhongzheng Ren , Yong Jae Lee

Deep learning methods typically require vast amounts of training data to reach their full potential. While some publicly available datasets exists, domain specific data always needs to be collected and manually labeled, an expensive, time…

Computer Vision and Pattern Recognition · Computer Science 2019-02-27 Stefan Hinterstoisser , Olivier Pauly , Hauke Heibel , Martina Marek , Martin Bokeloh

Signature verification is an authentication technique that considers handwritten signature as a biometric. From a biometric perspective this project made use of automatic means through an integration of intelligent algorithms to perform…

Signal Processing · Electrical Eng. & Systems 2018-07-30 Rozita Teymourzadeh , Martin kizito , Kok Wai Chan , Mok Vee Hoong

In the field of deep learning applied to face recognition, securing large-scale, high-quality datasets is vital for attaining precise and reliable results. However, amassing significant volumes of high-quality real data faces hurdles such…

Computer Vision and Pattern Recognition · Computer Science 2023-05-18 Omer Granoviter , Alexey Gruzdev , Vladimir Loginov , Max Kogan , Orly Zvitia

The usefulness of deep learning models in robotics is largely dependent on the availability of training data. Manual annotation of training data is often infeasible. Synthetic data is a viable alternative, but suffers from domain gap. We…

Computer Vision and Pattern Recognition · Computer Science 2022-11-18 Benedikt T. Imbusch , Max Schwarz , Sven Behnke

Simulation is increasingly being used for generating large labelled datasets in many machine learning problems. Recent methods have focused on adjusting simulator parameters with the goal of maximising accuracy on a validation task, usually…

Computer Vision and Pattern Recognition · Computer Science 2020-08-20 Harkirat Singh Behl , Atılım Güneş Baydin , Ran Gal , Philip H. S. Torr , Vibhav Vineet

We propose a novel approach to synthesizing images that are effective for training object detectors. Starting from a small set of real images, our algorithm estimates the rendering parameters required to synthesize similar images given a…

Computer Vision and Pattern Recognition · Computer Science 2015-06-30 Artem Rozantsev , Vincent Lepetit , Pascal Fua

Face anti-spoofing is crucial for the security of face recognition systems. Learning based methods especially deep learning based methods need large-scale training samples to reduce overfitting. However, acquiring spoof data is very…

Computer Vision and Pattern Recognition · Computer Science 2021-02-11 Jianzhu Guo , Xiangyu Zhu , Jinchuan Xiao , Zhen Lei , Genxun Wan , Stan Z. Li

Supervised deep neural networks are the-state-of-the-art for many tasks in the remote sensing domain, against the fact that such techniques require the dataset consisting of pairs of input and label, which are rare and expensive to collect…

Computer Vision and Pattern Recognition · Computer Science 2022-05-31 Sarun Gulyanon , Wasit Limprasert , Pokpong Songmuang , Rachada Kongkachandra

Deep learning is actively being used in biometrics to develop efficient identification and verification systems. Handwritten signatures are a common subset of biometric data for authentication purposes. Generative adversarial networks…

Computer Vision and Pattern Recognition · Computer Science 2024-10-14 Haadia Amjad , Kilian Goeller , Steffen Seitz , Carsten Knoll , Naseer Bajwa , Ronald Tetzlaff , Muhammad Imran Malik

Developing an automatic signature verification system is challenging and demands a large number of training samples. This is why synthetic handwriting generation is an emerging topic in document image analysis. Some handwriting synthesizers…

Computer Vision and Pattern Recognition · Computer Science 2024-01-31 Miguel A. Ferrer , Sukalpa Chanda , Moises Diaz , Chayan Kr. Banerjee , Anirban Majumdar , Cristina Carmona-Duarte , Parikshit Acharya , Umapada Pal

Most of previous deepfake detection researches bent their efforts to describe and discriminate artifacts in human perceptible ways, which leave a bias in the learned networks of ignoring some critical invariance features intra-class and…

Computer Vision and Pattern Recognition · Computer Science 2022-05-17 Ruiqi Zha , Zhichao Lian , Qianmu Li , Siqi Gu

Automatically detecting vital signs in videos, such as the estimation of heart and respiration rates, is a challenging research problem in computer vision with important applications in the medical field. One of the key difficulties in…

Computer Vision and Pattern Recognition · Computer Science 2020-04-27 Florin Condrea , Victor-Andrei Ivan , Marius Leordeanu