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of 42
pro vyhledávání: '"Korus, Pawel"'
In this paper, we propose dictionary attacks against speaker verification - a novel attack vector that aims to match a large fraction of speaker population by chance. We introduce a generic formulation of the attack that can be used with various spee
Externí odkaz:
http://arxiv.org/abs/2204.11304
Can we leverage high-resolution information without the unsustainable quadratic complexity to input scale? We propose Traversal Network (TNet), a novel multi-scale hard-attention architecture, which traverses image scale-space in a top-down fashion,
Externí odkaz:
http://arxiv.org/abs/2102.10212
We assess the variability of PRNU-based camera fingerprints with mismatched imaging pipelines (e.g., different camera ISP or digital darkroom software). We show that camera fingerprints exhibit non-negligible variations in this setup, which may lead
Externí odkaz:
http://arxiv.org/abs/2004.01929
We present FiFTy, a modern file type identification tool for memory forensics and data carving. In contrast to previous approaches based on hand-crafted features, we design a compact neural network architecture, which uses a trainable embedding space
Externí odkaz:
http://arxiv.org/abs/1908.06148
Autor:
Korus, Pawel, Memon, Nasir
Forensic analysis of digital photographs relies on intrinsic statistical traces introduced at the time of their acquisition or subsequent editing. Such traces are often removed by post-processing (e.g., down-sampling and re-compression applied upon d
Externí odkaz:
http://arxiv.org/abs/1902.10707
Autor:
Korus, Pawel, Memon, Nasir
Forensic analysis of digital photo provenance relies on intrinsic traces left in the photograph at the time of its acquisition. Such analysis becomes unreliable after heavy post-processing, such as down-sampling and re-compression applied upon distri
Externí odkaz:
http://arxiv.org/abs/1812.01516
Autor:
Korus, Pawel
Over the years, researchers have proposed various approaches to JPEG forgery detection and localization. In most cases, experimental evaluation was limited to JPEG quality levels that are multiples of 5 or 10. Each study used a different dataset, mak
Externí odkaz:
http://arxiv.org/abs/1811.12915
Autor:
Duda, Jarosław, Korus, Paweł
The rapidly improving performance of modern hardware renders convolutional codes obsolete, and allows for the practical implementation of more sophisticated correction codes such as low density parity check (LDPC) and turbo codes (TC). Both are decod
Externí odkaz:
http://arxiv.org/abs/1204.5317
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