collaborators

5 papers

cs.CV2025

Fake & Square: Training Self-Supervised Vision Transformers with Synthetic Data and Synthetic Hard Negatives

Nikos Giakoumoglou, Andreas Floros, Kleanthis Marios Papadopoulos +1

This paper does not introduce a new method per se. Instead, we build on existing self-supervised learning approaches for vision, drawing inspiration from the adage "fake it till yo…

cs.CV2025

Unsupervised Training of Vision Transformers with Synthetic Negatives

Nikos Giakoumoglou, Andreas Floros, Kleanthis Marios Papadopoulos +1

This paper does not introduce a novel method per se. Instead, we address the neglected potential of hard negative samples in self-supervised learning. Previous works explored synth…

cs.CV2025

Cluster Contrast for Unsupervised Visual Representation Learning

Nikos Giakoumoglou, Tania Stathaki

We introduce Cluster Contrast (CueCo), a novel approach to unsupervised visual representation learning that effectively combines the strengths of contrastive learning and clusterin…

cs.CV2024

Relational Representation Distillation

Nikos Giakoumoglou, Tania Stathaki

Knowledge distillation transfers knowledge from large teacher models to more compact student networks. The standard approach minimizes the Kullback-Leibler (KL) divergence between…

cs.CV2024

Caption-Matching: A Multimodal Approach for Cross-Domain Image Retrieval

Lucas Iijima, Nikos Giakoumoglou, Tania Stathaki

Cross-Domain Image Retrieval (CDIR) is a challenging task in computer vision, aiming to match images across different visual domains such as sketches, paintings, and photographs. E…