archimedes-Artificial Intelligence, Data Science, Algorithms-greece

 
Artificial Intelligence
 
Data Science
 
Algorithms

2025 Archimedes Computer Vision Day

2025_Archimedes_Computer_Vision_Day_2
Dates
2025-07-22 10:00 - 15:20
Venue
Archimedes Amphitheatre, 1 Artemidos Street, 15125, Marousi, Archimedes, Athena Research Center, Athens, Greece


Agenda

10:00 - 10:20:
Welcome

10:20 - 10:30:
Opening Remarks
Kostas Daniilidis, University of Pennsylvania (UPenn), USA, and Archimedes, Athena Research Center, Greece

10:30 - 11:30:
Talk 1 - "Towards In-the-Wild Understanding of 3D Human-Object Interactions"
Dimitris TzionasAssistant Professor for 3D Computer Vision at the University of Amsterdam (UvA), Netherlands

Abstract: People constantly interact with objects to perform tasks. To help people accomplish these, computers need to perceive Human-Object Interactions (HOI), and for this, they need to reconstruct HOI from whole-body color images of people interacting with objects or scenes. This is challenging, due to the occlusions between bodies and objects, motion blur, depth ambiguities, and the low image resolution of hands and graspable object parts. There has been significant prior work on estimating 3D humans without considering objects, and estimating 3D objects without considering humans. Little prior work estimates these jointly, but, for tractability, focuses either on interacting hands, ignoring the body, or on interacting bodies, ignoring hands. Only recent work addresses dexterous interaction of whole bodies, but instruments bodies with intrusive markers or sensors, and uses non-standard cameras to capture video of interactions. Moreover, reconstruction lacks hand detail that is crucial for grasping, and videos are captured in constrained settings, consequently, methods trained on these struggle generalizing. Instead, we need to infer HOI from natural whole-body images/videos. In this talk we will discuss several methods to this end. Specifically, we will discuss methods to estimate 3D contact from monocular color images, as well as methods to estimate 3D HOI while exploiting contact. Moreover, we will discuss methods for recovering 3D object pose and shape under strong occlusions. Last, time permitting, we will also discuss generating 3D HOI through a controllable and efficient method.

📝 Microsoft Teams linkhttps://tinyurl.com/597nehxa

11:30 - 11:40:
Q&A Session on Talk 1

11:40 - 12:00:
Short Break

12:00 - 13:00:
Talk 2 - "From Saliency to Scanpaths: 20 years of Wandering Eyes"
Dimitris SamarasSUNY Empire Innovation Professor of Computer Science with Stony Brook AI Institute, NY, USA

Abstract: This talk will start with an overview of the connections between Human Vision and Computer Vision. The connections will be discussed through a number of questions about how knowledge advances in each of those fields can help the other. The main part of the talk will discuss how current deep learning architectures from Reinforcement Learning to Transformers, can be leveraged to predict human gaze scanpaths when subjects search for a objects of known categories in an image. All such architectures require significant amounts of data which in this case are difficult to obtain. Thus the talk will explore how to scale gaze prediction both in the number of subjects and in the number of categories. The advent of large Vision Language Models (VLMs) has opened a new way to study gaze related questions and the talk will present some initial findings. The talk will conclude with applications of gaze prediction in graphic designs and medical images.

📝 Microsoft Teams linkhttps://tinyurl.com/4n82t4fn 

13:00 - 13:10:
Q&A Session on Talk 2

13:10 - 14:00:
Afternoon Break

14:00 - 15:00:
Talk 3 - "Efficient Brains that Imagine" 
Vicky Kalogeiton
, Professor in AI at the Computer Science Laboratory (LIX) of École Polytechnique, Paris, France 

Abstract: Intelligent robots do not just respond to commands—they imagine what you meant; what you wanted; what you believed. And they do this while learning from very little, and running on a chip in your living room.  In this talk, I will present recent advances in generative modeling that aim to equip embodied agents with efficient “brains” that can imagine possible futures, infer intent, and generate actions under uncertainty. First, I will show how generative models can be trained to understand the world with minimal supervision, using examples such as text-to-image generation from ImageNet and geolocation. These works demonstrate how far we can go with small datasets and structured training objectives—an essential requirement for real-world robotics. I will then turn to the challenge of controllability and intent understanding. Through trajectory generation conditioned on character-centric text and optical control over camera rays, I will illustrate how generative models can map inferred intentions to expressive, goal-directed actions. Underlying this is the need for temporal and semantic coherence, addressed by coherence-aware training methods that reduce model size while improving consistency.

📝 Microsoft Teams linkhttps://tinyurl.com/3n59cksa

15:00 - 15:10:
Q&A Session on Talk 3

15:10 - 15:20:
Closing Remarks
Kostas Daniilidis, University of Pennsylvania (UPenn), USA, and Archimedes, Athena Research Center, Greece



Organizing & Scientific Committee

Kostas Daniilidis, Professor of Computer Science, and holds the Ruth Yalom Stone Chair at the University of Pennsylvania (UPenn), USA, and Lead Researcher at Archimedes, Athena Research Center, Greece
Vasiliki Vasileiou, PhD student at the School of Electrical and Computer Engineering, National and Technical University of Athens (NTUA), Greece, and Academic scholar at Archimedes, Athena Research Center, Greece

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Vision

To position Greece as a leading player in AI and Data Science

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Mission

To build an AI Excellence Hub in Greece where the international research community can connect, groundbreaking ideas can thrive, and the next generation of scientists emerges, shaping a brighter future for Greece and the world

 

Welcome to ARCHIMEDES, a vibrant research hub connecting the global AI and Data Science research community fostering groundbreaking research in Greece and beyond. Its dedicated core team, comprising lead researchers, affiliated researchers, Post-Docs, PhDs and interns, is committed to advancing basic and applied research in Artificial Intelligence and its supporting disciplines, including Algorithms, Statistics, Learning Theory, and Game Theory organized around 8 core research areas. By collaborating with Greek and Foreign Universities and Research Institutes, ARCHIMEDES disseminates its research findings fostering knowledge exchange and providing enriching opportunities for students. Leveraging AI to address real-world challenges, ARCHIMEDES promotes innovation within the Greek ecosystem and extends its societal impact. Established in January 2022, as a research unit of the Athena Research Center with support from the Committee Greece 2021, ARCHIMEDES is funded for its first four years by the EU Recovery and Resilience Facility (RRF).

 
 

NEWS

 
Archimedes Surpasses 300 Publications

Archimedes Surpasses 300 Publications

Archimedes Unit of the Athena Research Center, Greece, is proud to announce that its researchers have published over 300 scientific publications in top-tier conferences (including NeurIPS, ICLR, ICML) and leading academic journals.

First Call for Papers of the Workshop on Dialects in NLP (LREC 2026)

First Call for Papers of the Workshop on Dialects in NLP (LREC 2026)

First call for papers for the "Workshop on Dialects in NLP: A Resource Perspective" at the three-day Language Resources Association Conference (LREC) 2026. This workshopwill be held in conjunction with LREC 2026, Palma de Mallorca, Spain on 11, 12 and 16 May 2026. It is a hybrid event and attendance can be in person or online. 

Participation is Open for the 2026 ELLIS Winter School

Participation is Open for the 2026 ELLIS Winter School

Archimedes Unit of the Athena Research Center, Greece, encourages participation in the "ELLIS Winter School 2026: AI for Earth System, Hazards, and Climate Extremes", taking place on March 16-20, 2026, at the National Technical University of Athens, Greece.

Merry Christmas!

Merry Christmas!

🌟 The Archimedes Community of the Athena Research Center, Greece, would like to wish everyone a Merry Christmas and a holiday season filled with happiness, gratitude, and good health. ✨

Archimedes Postdoc Vassilis Alimisis Will Conduct a Tutorial at ICM 2025

Archimedes Postdoc Vassilis Alimisis Will Conduct a Tutorial at ICM 2025

Vassilis Alimisis, a Postdoc at the Archimedes Unit of the Athena Research Center in Greece, a Collaborating Researcher at the School of Electrical and Computer Engineering at the National Technical University of Athens in Greece, an Adjunct Lecturer at the Department of Digital Industry Technologies at the National and Kapodistrian University of Athens in Greece, and a National Postdoctoral Research Fellow of the Bodossaki Foundation, Athens, Greece, will deliver a tutorial at the 2025 International Conference on Microelectronics (ICM), which will take place on 14-17 December 2025, in Cairo, Egypt.

 
 

The project “ARCHIMEDES Unit: Research in Artificial Intelligence, Data Science and Algorithms” with code OPS 5154714 is implemented by the National Recovery and Resilience Plan “Greece 2.0” and is funded by the European Union – NextGenerationEU.

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