Konstantinos C. Apostolakis

ORCID: 0000-0002-4609-4079
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About
Contact & Profiles
Research Areas
  • Virtual Reality Applications and Impacts
  • Augmented Reality Applications
  • Digital Games and Media
  • Educational Games and Gamification
  • IoT and Edge/Fog Computing
  • Emotion and Mood Recognition
  • Human Motion and Animation
  • Building Energy and Comfort Optimization
  • Urban Heat Island Mitigation
  • Software-Defined Networks and 5G
  • Advanced Vision and Imaging
  • Impact of Technology on Adolescents
  • Cardiac Health and Mental Health
  • Artificial Intelligence in Games
  • Human Pose and Action Recognition
  • Visual Attention and Saliency Detection
  • Advanced Image and Video Retrieval Techniques
  • Music Therapy and Health
  • Conservation Techniques and Studies
  • Advanced Neural Network Applications
  • 3D Surveying and Cultural Heritage
  • Gaze Tracking and Assistive Technology
  • Digital Transformation in Industry
  • Image Retrieval and Classification Techniques
  • Video Analysis and Summarization

Foundation for Research and Technology Hellas
2020-2025

FORTH Institute of Electronic Structure and Laser
2025

FORTH Institute of Computer Science
2020-2023

Hella (Germany)
2023

Aristotle University of Thessaloniki
2021

Information Technologies Institute
2012-2019

Centre for Research and Technology Hellas
2012-2019

Information Technology Institute
2013-2014

Centrum Wiskunde & Informatica
2013

National and Kapodistrian University of Athens
2006

Cool materials have high solar reflectance (high ability to reflect sunlight), thermal emittance radiate heat) and stay cool in the sun. Various coatings been developed recently. This paper analyses a prototype low cost coating using lime which shows 15% increase compared with standard coating. Also, ageing effect of coloured white are studied while they exposed outdoor conditions. The study that there is an attenuation coatings' spectral demonstrate almost negligible loss visible range,...

10.1093/ijlct/3.2.71 article EN International Journal of Low-Carbon Technologies 2008-04-01

Culture is a field that currently entering revolutionary phase, no longer being privilege for the few, but expanding to new audiences who are urged not only passively consume cultural heritage content, actually participate and assimilate it on their own. In this context, museums have already embraced technologies as part of exhibitions, many them featuring augmented or virtual reality artifacts. The presented work proposes synthesis augmented, mixed provide unified X-Reality experiences in...

10.3390/app11010338 article EN cc-by Applied Sciences 2020-12-31

In this paper, we address the problem of recognizing student engagement in prosocial games by exploiting cues from different input modalities. Since is a multifaceted phenomenon with dimensions, i.e., behavioral, cognitive, and affective, propose modeling using real-time data both students game. More specifically, apply body motion facial expression analysis to identify affective state students, while extract features related their cognitive behavioral based on interaction For automatic...

10.1109/tciaig.2017.2743341 article EN IEEE Transactions on Games 2017-08-23

Real-time and vision-based quality control for industrial processes has drawn great interest from both scientists practitioners, particularly following the transition to Zero Defect Manufacturing (ZDM) Industry 4.0. Despite considerable progress, most ZDM approaches focus on accuracy of inspection process, often neglecting critical factors application in shop floor. On one hand, near real-time methods are needed early defect detection containment. other data scarcity is an issue causing AI...

10.1016/j.compind.2023.103919 article EN cc-by Computers in Industry 2023-04-14

Background Patients undergoing surgery often experience stress and anxiety, which can increase complications hinder recovery. Effective management of these psychological factors is key to improving outcomes. Preoperative anxiety inversely correlated with the amount information patients receive, but accessible, personalized support remains limited, especially in preoperative settings. Face-to-face education impractical due resource constraints. Digital health (DH) interventions offer a...

10.2196/54049 article EN cc-by Journal of Medical Internet Research 2025-01-07

<sec> <title>UNSTRUCTURED</title> Patients undergoing surgery often experience stress and anxiety, which can increase complications hinder recovery. Effective management of these psychological factors is key to improving outcomes. Preoperative anxiety inversely correlated with the amount information patients receive, but accessible, personalized support remains limited, especially in preoperative settings. Face-to-face education impractical due resource constraints. Digital health (DH)...

10.2196/preprints.73608 preprint EN 2025-03-13

A challenging research issue, which has recently attracted a lot of attention, is the incorporation emotion recognition technology in serious games applications, order to improve quality interaction and enhance gaming experience. To this end, paper, we present an methodology that utilizes information extracted from multimodal fusion analysis identify affective state players during gameplay scenarios. More specifically, two monomodal classifiers have been designed for extracting based on...

10.1109/ist.2016.7738265 article EN 2016-10-01

Video games are maturing as a medium to tell stories inspired by historical struggles and real-life experiences. In this regard, they could work mechanism in Transitional Justice pursuit. article, we argue that can become agents for promoting education, reconciliation, healing. We hence identify means which museums video create empathy, reported recent literature, draw inceptive parallels between museum space design philosophies choices modern game Finally, the literature there is lack of...

10.1145/3651279 article EN other-oa Games Research and Practice 2024-03-12

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 their daily operations for forensics surveillance. AR is also gaining traction security, particularly with advent affordable wearable devices. Equipping police officers tools to facilitate an elevated situational awareness (SA) patrolling tactical...

10.12688/openreseurope.13715.2 article EN cc-by Open Research Europe 2022-01-21

In this paper, a gaze-based Relevance Feedback (RF) approach to region-based image retrieval is presented. Fundamental idea of the proposed method comprises iterative estimation real-world objects (or their constituent parts) that are interest user and subsequent exploitation information for refining results. Primary novelties work are: a) introduction new set gaze features realizing user's relevance assessment prediction at region-level, b) design time-efficient effective object-based RF...

10.1109/tmm.2013.2291535 article EN IEEE Transactions on Multimedia 2014-01-24

Tele-immersion (TI) related technologies can change the way people interact and bridge gap between physical digital worlds. However, while technology itself advances, most developed platforms have complex setups require large investments. In this work, a low-cost platform is introduced, integrating multiple TI-related advances. Focusing on ease of use rapid deployment, fast fully automatic calibration method proposed. The enables real-time 3D reconstruction users their placement into...

10.1109/icip.2016.7532380 article EN 2022 IEEE International Conference on Image Processing (ICIP) 2016-08-17

This paper presents gamification concepts implemented by a engine which is incorporated in knowledge sharing web-based application. The aims at increasing user’s motivation and participation training processes taking place on factory’s shop floor, enhance socialization support corrective feedback positive reinforcement. In particular, it motivates workers to participate discussions, propose solutions work-related problems, upload/view useful content even when being the workplace. makes use...

10.17083/ijsg.v6i2.273 article EN cc-by-nc-nd International Journal of Serious Games 2019-06-24

Hintergrund: Diese Studie hatte zum Ziel, die Häufigkeit der intra- und postoperativen Komplikationen zwischen modernen Phakoemulsifikationstechnik extrakapsulären Kataraktextraktion bei Patienten mit Pseudoexfoliationssyndrom zu vergleichen. Methoden: prospektive randomisierte schloss 94 Augen Katarakt, Pseudoexfoliationssyndrom, engen Pupillen leichter bis mäßiger Phakodonesis ein. wurden in zwei Gruppen randomisiert. Alle ersten Gruppe (47 Augen) mittels standardisierter operiert:...

10.1055/s-2004-812863 article DE Klinische Monatsblätter für Augenheilkunde 2004-05-01

5G will lay the foundations for mainstream broadband wireless technology of next decade, a leverage toward ensuring efficiency, effectiveness and adaptability everyday high-demanding operations, such as those in Public Protection Disaster Relief. The ITU considers LTE-Advanced systems mission critical PPDR able to address needs MC intelligence, providing support voice, data video services an IMT radio interface. In this paper, we introduce 5G-EPICENTRE, innovation action funded by EC under...

10.1109/eucnc/6gsummit51104.2021.9482425 article EN 2021-06-08

Stress and anxiety are psychophysiological responses commonly experienced by patients during the perioperative process that can increase presurgical postsurgical complications to a comprehensive positive recovery. Preventing intervening in stress help achieve health well-being outcomes. Similarly, provision of education about surgery be crucial component is inversely correlated with preoperative levels. However, few receive relief support before surgery, resource constraints make...

10.2196/38536 article EN cc-by JMIR Research Protocols 2022-08-31

Low latency and high bandwidth heralded with 5G networks will allow transmission of large amounts Mission-Critical data over a short time period. hence unlocks several capabilities for novel Public Protection Disaster Relief (PPDR) applications, developed to support first responders in making faster more accurate decisions during times crisis. As various research initiatives are giving shape the Network Application ecosystem as an interaction layer between vertical applications network...

10.3389/frcmn.2024.1286660 article EN cc-by Frontiers in Communications and Networks 2024-02-21

The future of tele-conferencing is towards multi-party 3D Tele-Immersion (TI) and TI environments that can support realistic inter-personal communications virtual interaction among participants. In this paper, we address two important issues, pertinent to environments. paper focuses on techniques for the real-time, reconstruction moving humans from multiple Kinect devices. off-line generation real-life scenes visual data, captured by non-professional users also addressed. Experimental...

10.1109/wiamis.2012.6226760 article EN 2012-05-01
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