no code implementations • International Journal on Digital Libraries 2023 • Polychronis Charitidis, Sotirios Moschos, Chrysostomos Bakouras, Stavros Doropoulos, Giorgos Makris, Nikolas Mauropoulos, Ilias Nitsos, Sofia Zapounidou, Afrodite Malliari
Specifically for Greek, to mitigate the scarcity of available datasets, a large-scale ASR dataset is annotated to train and evaluate deep learning architectures.
Automatic Speech Recognition Automatic Speech Recognition (ASR) +1
no code implementations • 2 Dec 2022 • Maria Siopi, Giorgos Kordopatis-Zilos, Polychronis Charitidis, Ioannis Kompatsiaris, Symeon Papadopoulos
In this paper, we address the problem of image splicing localization with a multi-stream network architecture that processes the raw RGB image in parallel with other handcrafted forensic signals.
no code implementations • 12 May 2021 • Polychronis Charitidis, Giorgos Kordopatis-Zilos, Symeon Papadopoulos, Ioannis Kompatsiaris
In this work, we present a deep learning-based approach for image tampering localization fusion.
no code implementations • 12 Jun 2020 • Polychronis Charitidis, Giorgos Kordopatis-Zilos, Symeon Papadopoulos, Ioannis Kompatsiaris
In this paper, we propose a pre-processing step to improve the training data quality and examine its effect on the performance of DeepFake detection.
no code implementations • 5 Dec 2019 • Polychronis Charitidis, Stavros Doropoulos, Stavros Vologiannidis, Ioannis Papastergiou, Sophia Karakeva
The damaging effects of hate speech on social media are evident during the last few years, and several organizations, researchers and social media platforms tried to harness them in various ways.