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Symeon Papadopoulos

5 accepted papers

2025

Any-Resolution AI-Generated Image Detection by Spectral Learning

CVPR 2025poster

Recent works have established that AI models introduce spectral artifacts into generated images and propose approaches for learning to capture them using labeled data. However, the significant differences in such artifacts among different generative models hinder these approaches from generalizing t…

2025

SAGI: Semantically Aligned and Uncertainty Guided AI Image Inpainting

ICCV 2025poster

Recent advancements in generative AI have made text-guided image inpainting--adding, removing, or altering image regions using textual prompts--widely accessible. However, generating semantically correct photorealistic imagery, typically requires carefully-crafted prompts and iterative refinement by…

2024

Leveraging Representations from Intermediate Encoder-blocks for Synthetic Image Detection

ECCV 2024poster

"The recently developed and publicly available synthetic image generation methods and services make it possible to create extremely realistic imagery on demand, raising great risks for the integrity and safety of online information. State-of-the-art Synthetic Image Detection (SID) research has led t…

2019

ViSiL: Fine-Grained Spatio-Temporal Video Similarity Learning

ICCV 2019oral

In this paper we introduce ViSiL, a Video Similarity Learning architecture that considers fine-grained Spatio-Temporal relations between pairs of videos -- such relations are typically lost in previous video retrieval approaches that embed the whole frame or even the whole video into a vector descri…

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