George Margetis

George Margetis
Foundation for Research and Technology - Hellas | forth · Institute of Computer Science (ICS)

PhD

About

80
Publications
25,266
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513
Citations
Introduction
George Margetis is a computer scientist specialised in interaction design, Ambient Intelligence Technologies and smart environments, Human Centered Artificial Intelligence, X-Reality as well as networks and telecommunications. He is currently a Post-Doctoral Researcher at the Human-Computer Interaction Laboratory of the Institute of Computer Science (ICS) of the Foundation for Research and Technology Hellas (FORTH).
Additional affiliations
January 2005 - present
Foundation for Research and Technology - Hellas
Position
  • Senior RTD Engineer

Publications

Publications (80)
Article
We propose and implement a tool for the access, analysis, and visual exploration of very large relational databases and data warehouses. To this end, we represent the database as a graph in which each table is represented by a tree rooted at the key and in which there is an edge from table T to table T’ if there is an attribute of T which is a fore...
Article
Background: Augmented reality (AR) and artificial intelligence (AI) are highly disruptive technologies that have revolutionised practices in a wide range of domains, including the security sector. Several law enforcement agencies (LEAs) employ AI in their daily operations for forensics and surveillance. AR is also gaining traction in security, part...
Article
In this work, a novel computational approach for the dynamic adaptation of User Interfaces (UIs) is proposed, which aims at enhancing the Situational Awareness (SA) of users by leveraging the current context and providing the most useful information, in an optimal and efficient manner. By combining Ontology modeling and reasoning with Combinatorial...
Article
Full-text available
Human stress is intricately linked with mental processes such as decision making. Public protection practitioners, including Law Enforcement Agents (LEAs), are forced to make difficult decisions during high-pressure operations, under strenuous circumstances. In this respect, systems and applications that assist such practitioners to take decisions,...
Article
Full-text available
Motivated by a combination of social media, technological evolution, as well as new habits and preferences of TV content consumers, there is an increasing demand for enhancement of professional productions with user generated content. Studies have explored the potential and feasibility of this approach, indicating that footage from non-professional...
Chapter
This chapter focuses on describing how the human-centered design (HCD) process can be revisited and expanded in an artificial intelligence (AI) context, proposing a methodological framework for putting the human in the loop. It explores how exactly the ‘human-in-the loop’ paradigm can be pursued and relevant core AI concepts and approaches. The cha...
Conference Paper
The 5G-EPICENTRE EU-funded project proposes mission-critical service and application experimentation in federation, adopting a "testbed of testbeds" approach in which different 5G-based platforms are intelligently combined and calibrated from a single control point. This cross-testbed concept embraced in the 5G-EPICENTRE project, together with the...
Conference Paper
Full-text available
Abstract—A significant amount of fifth-generation (5G) experimentation facilities and testbeds have been proposed in the scientific literature over the past five years, each characterized by its unique setup of resources and control frameworks. Given the wide set of often contradicting requirements presented by the various classes of 5G use cases,...
Article
Background: Augmented reality (AR) and artificial intelligence (AI) are highly disruptive technologies that have revolutionised practices in a wide range of domains. Their potential has not gone unnoticed in the security sector with several law enforcement agencies (LEAs) employing AI applications in their daily operations for forensics and surveil...
Article
Full-text available
‘User Experience’ (UX) is a term that has been established in HCI research and practice, subsuming the term ‘usability’. UX denotes that interaction with a contemporary technological system goes far beyond usability, extending to one’s emotions before, during, and after using the system and cannot be defined only by studying the fundamental usabili...
Article
Full-text available
Culture is a field that is currently entering a revolutionary phase, no longer being a privilege for the few, but expanding to new audiences who are urged to not only passively consume cultural heritage content, but actually participate and assimilate it on their own. In this context, museums have already embraced new technologies as part of their...
Poster
This paper describes a three-part interactive museum exhibition targeted at the domain of Natural History, where various technological components are utilized to deliver a compelling Mixed Reality experience for the museum’s visitors. The goal is to create new educational pathways for both adults and children wishing to learn about prehistoric life...
Poster
Intuitive second screen experiences involving smartphone or tablet use are currently not possible with existing VR systems. Whenever users are immersed in a virtual reality world, interactive features and content are usually presented as pop-up windows and floating-text notifications, immediately breaking user immersion, serving as a reminder they...
Poster
Heraklion Christmas Castle is a joint effort between ICS-FORTH and the Municipality of Heraklion-Crete (Municipal Public Service Enterprise of Heraklion), trying to pioneer and be innovative in the presentation of Christmas customs and ideas by creating a festive neighborhood governed by interactive technology. The approach followed by this researc...
Poster
Retail stores and in particular malls are going through a recession period, resulting among others from the change in customers’ shopping habits and the shift towards e-commerce. Proposed strategies to alleviate this situation require manifold solutions, especially for malls, as they constitute ecosystems featuring both commercial and social activi...
Conference Paper
Full-text available
Augmented, Virtual, and Mixed Reality have successfully transitioned from the laboratory environment to becoming mainstream technologies available to almost everyone, mainly due to important advancements in terms of hardware. These technologies, along with recent advancements in Artificial Intelligence, have the potential to deliver compelling expe...
Article
Full-text available
Physical paper, in its various forms (e.g. books, leaflets, catalogues), is extensively used in everyday activities, despite any advancements in digital technology and ICT. Inspired by the popularity of this medium, several research efforts have envisioned and pursued a new era of interactive paper, however several challenges still remain to be add...
Conference Paper
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Ambient Intelligence constitutes a new human-centered technological paradigm, where environments are oriented towards anticipating and satisfying the needs of their inhabitants. In this context, evaluation becomes of paramount importance. This paper presents UXAmI Observer, an automated user experience evaluation tool for Ambient Intelligence envir...
Poster
Full-text available
This paper presents an Ambient Intelligence infrastructure that fuses state-of-the-art technologies and related applications with digital cultural resources to deliver interactive and immersive user encounters through on-site Virtual Exhibitions (VEs) which respond to the demands of ‘new museology’. The practical exploitation of the concept is pres...
Poster
The Tourism Office of the city of Heraklion is a truly original facility that provides visitors with novel ways to access information through the use of modern technologies and innovative interactive systems developed by ICS-FORTH. This paper presents the innovative technologies employed at the tourist information office in order to enhance the inf...
Conference Paper
This paper presents a user experience study of interaction with printed maps for providing digitally augmented tourism information. The Interactive Maps system has been implemented based on an interactive printed matter framework which provides all the necessary components for developing smart applications that offer printed matter interaction, and...
Conference Paper
Full-text available
The explosion of information has led to the proliferation of Big Data as an influ-ential business and research domain. Data center infrastructure management is a sector largely affected by Big Data, however the visualization of, and interaction with, Big Data in the context of a data center room is a challenging endeavor. This paper presents the it...
Poster
Virtual Reality enhances the user experience regarding perception and presence by immersing the users in a virtual world, where vision and hearing are captivated and elided from the real environment. A key factor for such environments is to make the users perceive the virtual world as real and interact with it. User interaction with VR environments...
Poster
This paper presents a digital catalogue interactive system for promoting cultural heritage and tourism information in public spaces, which employs the notions of playful and tangible interaction. The system features two touch screens, one for displaying high resolution images and one for providing detailed information regarding the presented artifa...
Conference Paper
Full-text available
With the aim to create an active, sustainable, and self-maintained user-generated video online community, this paper proposes a reward scheme to enhance users' intrinsic motivations towards participating in the community and contributing content. The proposed reward scheme features a system of points, the accumulation of which achieves higher membe...
Conference Paper
This multidisciplinary workshop will contribute to a user experience (UX) research agenda for the effective combination of audiovisual material from professional and non-professional contributors. Responding to trends in developing technology and in user behaviour, the workshop will investigate a specific range of themes, deeper knowledge of which...
Chapter
This chapter presents recent advances in ambient intelligence technologies (AmI) for digital heritage experience in the context of virtual museums (VM). This is delivered under the light of an integrated and scalable approach towards the creation of AmI heritage environments. More specifically, this chapter presents a framework for representing kno...
Conference Paper
Big Data visualization relies on an interdisciplinary research area that includes mass data storage and retrieval, operations, analytics, security, ethics as well as visualization and interaction with end users. This paper reports on the characteristics of Big Data systems, mainly focusing on information visualization and discusses a number of meth...
Conference Paper
The global impact of the digital revolution in the cultural sector worldwide brings about the need to ensure the accessibility of physical exhibits, interactive digital exhibits, digital media and digital content for disabled people. The paper addresses the accessibility of CH resources, and the need for a new approach to accessible user interactio...
Poster
Augmented reality fitting rooms enrich customers’ experience and expedite the shopping procedure. This paper presents an Augmented Reality (AR) mirror which provides motion-based interaction to the users and suggests various outfits. The proposed system can be easily installed inside or at the window of a retail shop, enabling the users to stand in...
Poster
This paper presents the conversion of an electric cargo vehicle into a portable platform for interacting with information applications. The cargo vehicle hosts 2 seats for the driver and 1 extra passenger, and 3 interactive systems installed at the cargo’s right, left and back exterior side. The vehicle is intended to follow predefined routes from...
Conference Paper
Full-text available
The autonomy and independence of users with cognitive impairments can be fostered through cognitive technologies. The use of traditional computer interfaces has however proved to be difficult for these users. This paper proposes three innovative systems to train children with cognitive impairments in three fundamental everyday life activities: (a)...
Conference Paper
Full-text available
Paper is a widely used material which - through appropriate technological augmentation - has the potential to become a widely accepted means of interaction. Ambient Intelligence bears the promise of smart, adaptive and user-friendly environments, anticipating user needs in an unobtrusive manner. So far, there is no systematic approach to paper augm...
Article
Full-text available
Pervasive computing environments have permeated current research and practice, unobtrusively augmenting existing environments with digital content. The present work, following a pervasive computing approach, proposes a framework to augment an educational environment, being a typical classroom or any studying environment. In this context, the work p...
Article
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The role of the teacher in the classroom environment is of crucial importance for the effectiveness of the learning process. However, recent studies on the technological enhancement of education have shown that teacher's activities are not adequately supported, as the focus remains rather on the student's side. This article discusses a learner-cent...
Conference Paper
Full-text available
The work reported in this paper presents an innovative application of ambient technology in the domain of tourism and leisure that aims to improve the quality of services offered by the hospitality industry. The main objective is to formulate an ambient ecosystem that observes its surroundings using non-invasive technology and adapts its behavior,...
Article
Full-text available
This paper presents an augmented reality environment for students' improved learning, which is based on unobtrusive monitoring of the natural reading and writing process. This environment, named SESIL, is able to perform recognition of book pages and of specific elements of interest within a page, as well as to perceive interaction with actual book...
Conference Paper
This paper discusses the contribution of an Ambient Intelligence (AmI) facility towards adopting, promoting and mainstreaming Design for All principles and approaches. Design for All is fostered through the multidisciplinary approach that is adopted, the scientific exchange and experimentation actively engaging researchers, the capabilities offered...
Chapter
Scanning is an interaction method addressing users with severe motor impairments which provides sequential access to the elements of a graphical user interface and enables users to interact with the interface through at least a single binary switch by activating the switch when the desired interaction element receives the scanning focus. This chapt...
Conference Paper
Full-text available
Learning disabilities (LD) affect not only an individual's academic skills, but also many aspects of life for a large population percentage. As a result, understanding individuals with learning disabilities and addressing their needs is an active topic of research, although it has been studied for several years. On the other hand, Ambient Intellige...
Poster
Full-text available
This poster describes the design and development of a comprehensive Museum Tour Guide mobile application that can be installed on user-owned devices. The purpose of the application is to provide museum visitors with a device that can improve their experience through optimised planning of their visit and an always-available stream of information reg...
Conference Paper
Full-text available
Augmented Reality environments have shown to be relevant and valuable in many instances of the educational process. Accounting for the advantages and conventional gains of learning through physical books and printed matter in gen-eral, this paper presents an approach towards augmenting both such media. This work has elementary school as a con-text...
Poster
Full-text available
An active field of research today is the technological enrichment of everyday activities using augmented reality and ambient intelligence technologies. To this end, augmenting dinner tables is a challenging task, requiring a high-quality user experience unobtrusively supporting and enhancing the user’s main goal: eating and socializing. This work p...
Conference Paper
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This paper discusses a learner-centric approach towards supporting instructors on improving the learning process in ambient educational environments. The proposed system introduces an intelligent multi-agent infrastructure that monitors unobtrusively the students’ activities and notifies the teacher, in real-time, about potential learning weak...
Conference Paper
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This paper presents an interactive desk that augments physical books that are placed upon its surface with multimedia content and interactive applications. Such content is dynamically displayed in augmentation to the currently open page of the book, that is, aligned in real-time with its 2D orientation upon the desk. The rendered applications are c...
Conference Paper
Full-text available
This paper aims to set a landscape and elaborate a roadmap for accessible user interaction in AmI environments, including and beyond personal computational devices (PCs, mobiles, etc.), by identifying and addressing the new needs that emerge in the above context. This line of work is currently being pursued in the context of the AmI Research Progra...
Article
Full-text available
Ambient Intelligence is an emerging field of research that has to potential to enrich educational environments. This paper discusses a line of research targeted to investigate and introduce innovative solutions for efficient learning in smart environments through integrating AmI technology in the learning process. The overall concept of the S...
Conference Paper
Full-text available
This paper presents an advergame installation for promoting the brand and products of a food company producing various types of traditional Cretan rusks. The paper first presents some background and related work. Then the requirements set towards creating the game are outlined, followed by concept creation and design decisions taken in order to mee...
Poster
Full-text available
In G. Tortora, S. Levialdi & M. Tucci (Eds.), Proceedings of the International Working Conference on Advanced Visual Interfaces (AVI 2012), Capri Island (Naples), Italy, 21-25 May (802-803). New York: ACM Press.
Chapter
Full-text available
This paper presents an innovative advergame installation for promoting the brand and products of a company producing Cretan rusks. The paper first presents some background and related work. Then, the requirements set towards creating the game are outlined, followed by concept creation and design decisions taken to meet these requirements, as well a...
Conference Paper
Full-text available
This paper discusses a line of research targeted to investigate and introduce innovative solutions for efficient learning in smart environments through integrating AmI technology in the learning process. Following a discussion of current approaches to technology integration in the classroom, the overall concept of the Student-Centric “Intelligent”...
Conference Paper
Full-text available
Today, augmented reality is evolving towards sophisticated approaches exploiting the opportunities offered by immersive environments and high quality 3D graphics. Such systems can prove to be very useful in the context of education, especially when learning involves reading and writing activities. However, the majority of existing systems relies on...
Conference Paper
Full-text available
This paper discusses an education-centric approach towards ambient intelligence in the classroom, raising fundamental requirements that should be taken into consideration, in order to efficiently provide genuine students’ education enhancement. These requirements are addressed by an integrated architecture for pervasive computing environments, name...
Conference Paper
Full-text available
This paper discusses a framework that supports collaborative learning activities in smart environments. When designing or developing collaborative environments numerous fundamental requirements should be taken into consideration to maximize their potentials. These best-practices outline strategies regarding (i) group formation, (ii) role assignment...
Poster
Full-text available
Although the concept of using video games in education has been present for decades, it is only lately that consistent attempts of games entering the classroom can be observed. This paper describes the process of developing a game that aims to assist Junior High-School pupils in learning English as a foreign language in class. The learning goals, t...