Blar i Institutt for datateknologi og informatikk på forfatter "Raja, Kiran"
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Cross-sensor periocular biometrics in a global pandemic: Comparative benchmark and novel multialgorithmic approach
Alonso-Fernandez, Fernando; Raja, Kiran; Ramachandra, Raghavendra; Busch, Christoph; Bigun, Josef; Vera-Rodriguez, Ruben; Fierrez, Julian (Peer reviewed; Journal article, 2022)The massive availability of cameras and personal devices results in a wide variability between imaging conditions, producing large intra-class variations and a significant performance drop if images from heterogeneous ... -
Data Architecture and Design of in-vivo Neurosurgical Hyperspectral Image Database
Hisuin, Gemal Hamid (Master thesis, 2022)In recent years, the use of hyperspectral imaging (HSI) for microneurosurgical applications has been introduced. One of the most significant challenge that researchers and neurosurgeons face when developing or applying ... -
Detecting Sexual Predatory Chats by Perturbed Data and Balanced Ensembles
Borj, Parisa Rezaee; Raja, Kiran; Bours, Patrick (Chapter, 2021)Securing the safety of the children on online platforms is critical to avoid the mishaps of them being abused for sexual favors, which usually happens through predatory conversations. A number of approaches have been ... -
Efficiently Weaponizing Vulnerabilities and Automating Vulnerability Hunting
Bai, Simen; Bøe, Even Bryhn; Hegland-Antonsen, Ruben Christoffer (Bachelor thesis, 2022)Cybersikkerhet har aldri vært viktigere, spesielt med hensyn til den økende avhengigheten av informasjonsteknologi. Cybersikkerhetsindustrien opplever en rask vekst i mengden rapporterte sårbarheter; en trend som forventes ... -
Estimating Bidirectional Reflectance of Materials Using Machine Learning Techniques
Nath, Shaikat Deb (Master thesis, 2022)A Bidirectional Reflectance Distribution Function (BRDF) characterizes the reflectance behavior of materials to define their optical properties. Bidirectional reflectance can be used to understand the visual appearance ... -
An Experience Report on Transitioning to Blended Learning and Portfolio-assessment: a Cross-campus Course in Programming
Rouhani, Majid; Olsø, Atle; Styve, Arne; Raja, Kiran (Peer reviewed; Journal article, 2022)The transition from traditional to digital teaching has led to several challenges for students and educators under the COVID-19 pandemic. Most universities are experiencing remote online delivery and assessment for the ... -
Konverterings- og overføringsprogram
Sharif, Fasih Mohammad (Bachelor thesis, 2023)Formålet med dette prosjektet er å utvikle et nytt program basert på en allerede eksisterende programvare ved å videreutvikle den og skape et bedre brukergrensesnitt. Programmet i seg selv må være i stand til å konvertere ... -
Konverterings- og overføringsprogram
Retterås, Ole Petter (Bachelor thesis, 2023)Innlandet fylkesarkiv ønsket seg en brukervennlig og moderne løsning, som kunne utføre konvertering av mange ulike filtyper for langtidsarkivering, ved å bevare filstruktur/mappestruktur som kunne eliminere menneskelig ... -
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 Attacks and Detection using Spectral Images
Aryal, Himali (Master thesis, 2022)Face recognition systems assume that a person's face serves as the unique link to identify them. A morph attack happens when two people with similar facial features morph their faces together, resulting in a face image ... -
Multichannel Residual Cues for Fine-Grained Classification in Wireless Capsule Endoscopy
Vats, Anuja; Raja, Kiran; Pedersen, Marius; Mohammed, Ahmed Kedir (Peer reviewed; Journal article, 2022)Early diagnosis of gastrointestinal pathologies leads to timely medical intervention and prevents disease development. Wireless Capsule Endoscopy (WCE) is used as a non-invasive alternative for gastrointestinal examination. ... -
On the Relation Between ROC and CMC
Veldhuis, Raymond Nicolaas Johan; Raja, Kiran (Journal article; Peer reviewed, 2023)We formulate a compact relation between the probabilistic Receiver Operating Characteristic (ROC) and the probabilistic Cumulative Match Characteristic (CMC) that predicts every entry of the probabilistic CMC as a functional ... -
Online grooming detection: A comprehensive survey of child exploitation in chat logs
Rezaee Borj, Parisa; Raja, Kiran; Bours, Patrick Adrianus (Peer reviewed; Journal article, 2022)Social media platforms present significant threats against underage users targeted for predatory intents. Many early research works have applied the footprints left by online predators to investigate online grooming. While ... -
Parameter-Free Matrix Decomposition for Specular Reflections Removal in Endoscopic Images
Joseph, Jithin; George, Sudhish N.; Raja, Kiran (Peer reviewed; Journal article, 2023)Objective: Endoscopy is a medical diagnostic procedure used to see inside the human body with the help of a camera-attached system called the endoscope. Endoscopic images and videos suffer from specular reflections (or ... -
Pixel-wise supervision for presentation attack detection on identity document cards
Mudgalgundurao, Raghavendra; Schuch, Patrick; Raja, Kiran; Ramachandra, Raghavendra; Damer, Naser (Peer reviewed; Journal article, 2022)Identity documents (or IDs) play an important role in verifying the identity of a person with wide applications in banks, travel, video-identification services and border controls. Replay or photocopied ID cards can be ... -
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 ... -
Smartphone Presentation Attack Detection using TrueDepth
Azim, Hamza; Wudarczyk, Milosz Antoni; Øhman-Norén, Kristian Amundsen (Bachelor thesis, 2022)Automatisk angrepsgjenkjenning ved ansikts-autentisering (PAD) er en viktig del av å kunne beskytte ansiktsgjenkjennings-systemer fra alvorlige potensielle sikkerhetsbrudd. I dag eksisterer et flerfoldig antall stabile, ... -
Template-Driven Knowledge Distillation for Compact and Accurate Periocular Biometrics Deep-Learning Models
Boutros, Fadi; Damer, Naser; Raja, Kiran; Kirchbuchner, Florian; Kuijper, Arjan (Peer reviewed; Journal article, 2022)This work addresses the challenge of building an accurate and generalizable periocular recognition model with a small number of learnable parameters. Deeper (larger) models are typically more capable of learning complex ... -
Text-to-speech Synthesis Conditioned on Speaker Characteristic and Emotional Profile
Ness, Håkon (Master thesis, 2022)Innenfor tale generasjon har det vært en økende interesse av Deep Learning- og Machine Learning algoritmer for å prøve å generere syntetisk menneskelig tale som konkurrerer med naturlig tale. Etter den beryktede ... -
Towards better and unlinkable protected biometric templates using label-assisted discrete hashing
Raja, Kiran; Mudgalgundurao, Raghavendra; Busch, Christoph (Peer reviewed; Journal article, 2022)The growth of biometrics-based authentication in various services raises the need to protect biometric data at the storage level. Specifically, biometric templates need to be protected after features are extracted to avoid ...