• Honey Templates: a Protection Mechanism for Biometric Systems 

      Martiri, Edlira (Doctoral theses at NTNU;2022:20, Doctoral thesis, 2022)
    • The Impact of Stress on Healthcare Staffs’ Cybersecurity Practices 

      Fauzi, Muhammad Ali (Doctoral theses at NTNU;2023:285, Doctoral thesis, 2023)
      Digitalization has revolutionized the healthcare industry, offering numerous advantages. However, it has also introduced the risk of data breaches through cyber-attacks. Healthcare information systems, containing valuable ...
    • Improved ear verification after surgery - An approach based on collaborative representation of locally competitive features 

      Ramachandra, Raghavendra; Raja, Kiran; Venkatesh, Sushma Krupa; Busch, Christoph (Journal article; Peer reviewed, 2018)
      Ear characteristic is a promising biometric modality that has demonstrated good biometric performance. In this paper, we investigate a novel and challenging problem to verify a subject (or user) based on the ear characteristics ...
    • Innovative methods for large-scale fingerprint identification systems - Facilitating searching in a large-scale database 

      Li, Guoqiang (Doctoral theses at NTNU;296, Doctoral thesis, 2016)
      Fingerprint recognition has gained wide acceptance and great popularity after the fingerprint recognition based applications have been adopted in diverse scenarios, such as forensics area (mainly by law enforcement agencies), ...
    • Iris Recognition in Visible Wavelength: Impact and automated Detection of Glasses 

      Osorio-Roig, Daile; Drozdowski, Pawel; Rathgeb, Christian; Morales-González, Annette; Garea-Llano, Eduardo; Busch, Christoph (Chapter, 2018)
      The prevalence of visual impairment around the world is rapidly increasing, causing large numbers of people to wear glasses. Glasses are generally considered an important noise source in iris recognition; under objective ...
    • Light fields for face analysis 

      Galdi, Chiara; Chiesa, Valeria; Busch, Christoph; Correia, Paulo Lobato; Dugelay, Jean-Luc; Guillemot, Christine (Peer reviewed; Journal article, 2019)
      The term “plenoptic” comes from the Latin words plenus (“full”) + optic. The plenoptic function is the 7-dimensional function representing the intensity of the light observed from every position and direction in 3-dimensional ...
    • Low Visual Distortion and Robust Morphing Attacks Based on Partial Face Image Manipulation 

      Qin, Le; Peng, Fei; Venkatesh, Sushma; Ramachandra, Raghavendra; Long, Min; Busch, Christoph (Journal article; Peer reviewed, 2021)
    • MIPGAN—Generating Strong and High Quality Morphing Attacks Using Identity Prior Driven GAN 

      Zhang, Haoyu; Venkatesh, Sushma; Ramachandra, Raghavendra; Raja, Kiran; Damer, Naser; Busch, Christoph (Journal article; Peer reviewed, 2021)
      Face morphing attacks target to circumvent Face Recognition Systems (FRS) by employing face images derived from multiple data subjects (e.g., accomplices and malicious actors). Morphed images can be verified against ...
    • Morphing Attack Detection-Database, Evaluation Platform, and Benchmarking 

      Raja, Kiran; Ferrara, Matteo; Franco, Annalisa; Spreeuwers, Luuk; Batskos, Ilias; Wit, Florens de; Gomez-Barrero, Marta; Scherhag, Ulrich; Fischer, Daniel; Venkatesh, Sushma; Singh, Jag Mohan; Li, Guoqiang; Bergeron, Loïc; Isadskiy, Sergey; Ramachandra, Raghavendra; Rathgeb, Christian; Frings, Dinusha; Seidel, Uwe; Knopjes, Fons; Veldhuis, Raymond N.J.; Maltoni, Davide; Busch, Christoph (Peer reviewed; Journal article, 2021)
      Morphing attacks have posed a severe threat to Face Recognition System (FRS). Despite the number of advancements reported in recent works, we note serious open issues such as independent benchmarking, generalizability ...
    • Multi-biometric Identification with Cascading Database Filtering 

      Drozdowski, Pawel; Mokroß, Benedikt-Alexander; Rathgeb, Christian; Busch, Christoph (Journal article, 2020)
      The growing scale and number of biometric deployments around the world necessitates research into technologies which facilitate fast identification queries and high discriminative power. In this context, this article ...
    • Multilingual Audio-Visual Smartphone Dataset and Evaluation 

      Mandalapu, Hareesh; Reddy, P. N. Aravinda; Ramachandra, Raghavendra; Rao, Krothapalli Sreenivasa; Mitra, Pabitra; Prasanna, S. R. Mahadeva; Busch, Christoph (Peer reviewed; Journal article, 2021)
      Smartphones have been employed with biometric-based verification systems to provide security in highly sensitive applications. Audio-visual biometrics are getting popular due to their usability, and also it will be challenging ...
    • Multilingual Voice Impersonation Dataset and Evaluation 

      Mandalapu, Hareesh; Busch, Christoph; Ramachandra, Raghavendra (Chapter, 2021)
      Well-known vulnerabilities of voice-based biometrics are impersonation, replay attacks, artificial signals/speech synthesis, and voice conversion. Among these, voice impersonation is the obvious and simplest way of attack ...
    • On the Applicability of Synthetic Data for Face Recognition 

      Zhang, Haoyu; Grimmer, Marcel; Ramachandra, Raghavendra; Bylappa Raja, Kiran; Busch, Christoph (Chapter, 2021)
      Face verification has come into increasing focus in various applications including the European Entry/Exit System, which integrates face recognition mechanisms. At the same time, the rapid advancement of biometric ...
    • On the Application of Homomorphic Encryption to Face Identification 

      Drozdowski, Pawel; Buchmann, Nicolas; Rathgeb, Christian; Margraf, Marian; Busch, Christoph (Chapter, 2019)
      The data security and privacy of enrolled subjects is a critical requirement expected from biometric systems. This paper addresses said topic in facial biometric identification. In order to fulfil the properties of ...
    • Performance Evaluation of Fusing Protected Fingerprint Minutiae Templates on the Decision Level 

      Yang, Bian; Busch, Christoph; Groot, Koen de; Xu, Haiyun; Veldhuis, Raymond N.J. (Journal article; Peer reviewed, 2012)
      In a biometric authentication system using protected templates, a pseudonymous identifier is the part of a protected template that can be directly compared. Each compared pair of pseudonymous identifiers results in a ...
    • Presentation Attack Resistant Fingerprint Biometrics –using Optical Coherence Tomography 

      Sousedik, Ctirad (Doctoral theses at NTNU;2018:17, Doctoral thesis, 2018)
    • Privacy-Preserving Indexing of Iris-Codes with Cancelable Bloom Filter-based Search Structures 

      Drozdowski, Pawel; Garg, Surabhi; Rathgeb, Christian; Gomez-Barrero, Marta; Chang, Donghoon; Busch, Christoph (Chapter, 2018)
      Protecting the privacy of the enrolled subjects is an important requirement expected from biometric systems. In recent years, numerous template protection schemes have been proposed, but so far none of them have been shown ...
    • Qualifying Fingerprint Samples Captured by Smartphone Cameras in Real-Life Scenarios 

      Li, Guoqiang; Yang, Bian; Busch, Christoph (Others, 2016-05-03)
      While biometrics has been extensively adopted by industry and governments for identification and forensics purposes relying on dedicated biometric sensors and systems, the consumer market driven by innovations in consumer ...
    • A response to the European Data Protection Supervisor ‘Misunderstandings in Biometrics’ by the European Association for Biometrics 

      Busch, Christoph; Czajka, Adam; Deravi, Farzin; Drozdowski, Pawel; Gomez‐Barrero, Marta; Hasse, Georg; Henniger, Olaf; Kindt, Els; Kolberg, Jascha; Nouak, Alexander; Raja, Kiran; Ramachandra, Raghavendra; Rathgeb, Christian; Salomon, Jean; Veldhuis, Raymond Nicolaas Johan (Peer reviewed; Journal article, 2021)
      The intention of this position paper is to comment on the joint European Data Protection Supervisor (EDPS)-Agencia Española de Protección de Datos (aepd) publication ‘14 Misunderstandings with regard to Biometric Identification ...
    • Robust Algorithms for Audio-Visual Biometric Authentication 

      Mandalapu, Hareesh (Doctoral theses at NTNU;2021:394, Doctoral thesis, 2021)
      Biometric authentication has been a vital method of human identification across a wide range of applications. It is a quick and secure authorization process in applications such as border control and banking transactions. ...