622 research outputs found
Biometric Spoofing: A JRC Case Study in 3D Face Recognition
Based on newly available and affordable off-the-shelf 3D sensing, processing and printing technologies, the JRC has conducted a comprehensive study on the feasibility of spoofing 3D and 2.5D face recognition systems with low-cost self-manufactured models and presents in this report a systematic and rigorous evaluation of the real risk posed by such attacking approach which has been complemented by a test campaign. The work accomplished and presented in this report, covers theories, methodologies, state of the art techniques, evaluation databases and also aims at providing an outlook into the future of this extremely active field of research.JRC.G.6-Digital Citizen Securit
Impact of Face Image Quality Estimation on Presentation Attack Detection
Non-referential face image quality assessment methods have gained popularity
as a pre-filtering step on face recognition systems. In most of them, the
quality score is usually designed with face matching in mind. However, a small
amount of work has been done on measuring their impact and usefulness on
Presentation Attack Detection (PAD). In this paper, we study the effect of
quality assessment methods on filtering bona fide and attack samples, their
impact on PAD systems, and how the performance of such systems is improved when
training on a filtered (by quality) dataset. On a Vision Transformer PAD
algorithm, a reduction of 20% of the training dataset by removing lower quality
samples allowed us to improve the BPCER by 3% in a cross-dataset test
Um estudo comparativo de contramedidas para detectar ataques de spoofing em sistemas de autenticação de faces
Orientador: José Mario De MartinoDissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Elétrica e de ComputaçãoResumo: O Resumo poderá ser visualizado no texto completo da tese digitalAbstract: The complete Abstract is available with the full electronic document.MestradoEngenharia de ComputaçãoMestre em Engenharia Elétric
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