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Ioannis Kompatsiaris

2 papers indexed

arxivcs.CVcs.AI2026-07-17

Test-Time Noise Guided Adaptation for Realistic Autoregressive Video Generation

Dimitrios Karageorgiou, Symeon Papadopoulos, Ioannis Kompatsiaris, Efstratios Gavves

Autoregressive video diffusion models have enabled the generation of arbitrarily long videos by removing conditioning on future frames, thus greatly improving computational efficiency. Yet, they suffer from error accumulation over time, as the denoised sequence gradually drifts a…

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openalexZenodo (CERN European Organization for Nuclear Research)

Learning Perceptual Hash Similarity for Image Copy Detection

Maria Pegia, Dimitrios Stefanopoulos, Björn Þór Jónsson, Anastasia Moumtzidou, Ilias Gialampoukidis, Stefanos Vrochidis, et al.

Image copy detection is commonly addressed using either local descriptors or deep learning models, which can be computationally expensive and rely on high-dimensional features. In contrast, this work explores copy detection using compact perceptual hash representations and learne…

Also available via: European Organization for Nuclear Research

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