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In this paper, a real-time signal processing frame-work based on a 60 GHz frequency-modulated continuous wave (FMCW) radar system to recognize gestures is proposed. In order to improve the robustness of the radar-based gesture recognition…

Signal Processing · Electrical Eng. & Systems 2020-05-21 Yuliang Sun , Tai Fei , Xibo Li , Alexander Warnecke , Ernst Warsitz , Nils Pohl

This work builds on the previous introduction [1] of a coupled experimental-computational system devised to fully characterize the thermal behavior of complex 3D submicron electronic devices. The new system replaces the laser-based surface…

Materials Science · Physics 2007-09-13 Peter E. Raad , Pavel L. Komarov , M. Burzo

Face Presentation Attack Detection (PAD) plays a pivotal role in securing face recognition systems against spoofing attacks. Although great progress has been made in designing face PAD methods, developing a model that can generalize well to…

Computer Vision and Pattern Recognition · Computer Science 2023-09-19 Usman Muhammad , Jorma Laaksonen , Djamila Romaissa Beddiar , Mourad Oussalah

With the development of presentation attacks, Automated Fingerprint Recognition Systems(AFRSs) are vulnerable to presentation attack. Thus, numerous methods of presentation attack detection(PAD) have been proposed to ensure the normal…

Computer Vision and Pattern Recognition · Computer Science 2020-02-19 Haozhe Liu , Wentian Zhang , Guojie Liu , Feng Liu

Face presentation attacks have become a major threat to face recognition systems and many countermeasures have been proposed in the past decade. However, most of them are devoted to 2D face presentation attacks, rather than 3D face masks.…

Computer Vision and Pattern Recognition · Computer Science 2019-03-28 Lei Li , Zhaoqiang Xia , Xiaoyue Jiang , Yupeng Ma , Fabio Roli , Xiaoyi Feng

Designing egocentric 3D hand pose estimation systems that can perform reliably in complex, real-world scenarios is crucial for downstream applications. Previous approaches using RGB or NIR imagery struggle in challenging conditions: RGB…

Computer Vision and Pattern Recognition · Computer Science 2025-02-28 Fangqiang Ding , Yunzhou Zhu , Xiangyu Wen , Gaowen Liu , Chris Xiaoxuan Lu

Document Presentation Attack Detection (DPAD) is an important measure in protecting the authenticity of a document image. However, recent DPAD methods demand additional resources, such as manual effort in collecting additional data or…

Computer Vision and Pattern Recognition · Computer Science 2024-11-25 Changsheng Chen , Yongyi Deng , Liangwei Lin , Zitong Yu , Zhimao Lai

At present spoofing attacks via which biometric system is potentially vulnerable against a fake biometric characteristic, introduces a great challenge to recognition performance. Despite the availability of a broad range of presentation…

Computer Vision and Pattern Recognition · Computer Science 2018-12-19 Avantika Singh , Gaurav Jaswal , Aditya Nigam

Automatic fingerprint recognition systems are the most extensively used systems for person authentication although they are vulnerable to Presentation attacks. Artificial artifacts created with the help of various materials are used to…

Computer Vision and Pattern Recognition · Computer Science 2023-03-03 Anuj Rai , Somnath Dey , Pradeep Patidar , Prakhar Rai

The diffusion of fingerprint verification systems for security applications makes it urgent to investigate the embedding of software-based presentation attack detection algorithms (PAD) into such systems. Companies and institutions need to…

Cryptography and Security · Computer Science 2021-10-22 Marco Micheletto , Gian Luca Marcialis , Giulia Orrù , Fabio Roli

This Paper describes a hand geometry biometric identification system. We have acquired a database of 22 people using a conventional document scanner. The experimental section consists of a study about the discrimination capability of…

Computer Vision and Pattern Recognition · Computer Science 2022-04-11 Marcos Faundez-Zanuy , Guillermo Mar Navarro Mérida

This paper proposes the first, known to us, open source presentation attack detection (PAD) solution to distinguish between authentic iris images (possibly wearing clear contact lenses) and irises with textured contact lenses. This software…

Computer Vision and Pattern Recognition · Computer Science 2019-05-10 Joseph McGrath , Kevin W. Bowyer , Adam Czajka

An iris biometric system can be compromised by presentation attacks (PAs) where artifacts such as artificial eyes, printed eye images, or cosmetic contact lenses are presented to the system. To counteract this, several presentation attack…

Computer Vision and Pattern Recognition · Computer Science 2025-10-17 Shivangi Yadav , Arun Ross

Thermal infrared (IR) images represent the heat patterns emitted from hot object and they do not consider the energies reflected from an object. Objects living or non-living emit different amounts of IR energy according to their body…

Computer Vision and Pattern Recognition · Computer Science 2013-09-06 Ayan Seal , Suranjan Ganguly , Debotosh Bhattacharjee , Mita Nasipuri , Dipak kr. Basu

Face presentation attack detection (PAD) has received increasing attention ever since the vulnerabilities to spoofing have been widely recognized. The state of the art in unimodal and multi-modal face anti-spoofing has been assessed in…

Computer Vision and Pattern Recognition · Computer Science 2021-12-22 Zitong Yu , Jukka Komulainen , Xiaobai Li , Guoying Zhao

Iris presentation attack detection (PAD) plays a vital role in iris recognition systems. Most existing CNN-based iris PAD solutions 1) perform only binary label supervision during the training of CNNs, serving global information learning…

Computer Vision and Pattern Recognition · Computer Science 2021-06-29 Meiling Fang , Naser Damer , Fadi Boutros , Florian Kirchbuchner , Arjan Kuijper

With the increasing integration of smartphones into our daily lives, fingerphotos are becoming a potential contactless authentication method. While it offers convenience, it is also more vulnerable to spoofing using various presentation…

Computer Vision and Pattern Recognition · Computer Science 2023-10-24 Banafsheh Adami , Sara Tehranipoor , Nasser Nasrabadi , Nima Karimian

A plethora of biometric measures have been proposed in the past. In this paper we introduce a new potential biometric measure: the human tremor. We present a new method for identifying the user of a handheld device using characteristics of…

Human-Computer Interaction · Computer Science 2016-06-23 Oana Miu , Adrian Zamfir , Corneliu Florea

Although face recognition systems have undergone an impressive evolution in the last decade, these technologies are vulnerable to attack presentations (AP). These attacks are mostly easy to create and, by executing them against the system's…

Computer Vision and Pattern Recognition · Computer Science 2025-07-23 Lazaro Janier Gonzalez-Sole , Juan E. Tapia , Christoph Busch

This paper presents a biometric recognition system based on hand geometry. We describe a database specially collected for research purposes, which consists of 50 people and 10 different acquisitions of the right hand. This database can be…

Computer Vision and Pattern Recognition · Computer Science 2022-04-20 Marcos Faundez-Zanuy , Miguel A. Ferrer-Ballester , Carlos M. Travieso-González , Virginia Espinosa-Duro
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