Gregor Rozinaj - IEEE Xplore Author Profile

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Author details

Gregor Rozinaj

Also published under: G. Rozinaj

Publications

70

Citations

164

Publications by Year

19962024

Co-Authors:

Mansi BhatanagarMansi BhatnagarJozef CepkoM. CernakAdriana E. Chis

Show All Co-Authors (60)

Gregor Rozinaj

Also published under: G. Rozinaj

Affiliation

Faculty of Electrical Engineering and Information Technology

Slovak University of Technology

Bratislava, Slovakia

Publication Topics

Virtually,
Live Streaming,
User Experience,
Videoconferencing,
Virtual Camera,
Camera System,
Computer Vision,
Depth Map,
Feature Matching,
Head-mounted Display,
Interactive Experience,
Learning Algorithms

Biography

Gregor Rozinaj is a lecturer in the Department of Telecommunications at Slovak University of Technology, Bratislava. Slovakia. His research interests include speech recognition, automatic ship control, and telecommunications. Rozinaj received a PhD and habilitation in telecommunications from Slovak University of Technology. Contact him at gregor.rozinaj@stuba.sk.(Based on document published on 18 June 2014).

Publications

70

Citations

164

Publications by Year

19962024

Co-Authors:

Mansi Bhatanagar
Mansi Bhatnagar
Jozef Cepko
M. Cernak
Adriana E. Chis

Show All Co-Authors (60)

Author's Published Works

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Showing 1-25 of 70 results

Conferences (67)

Journals (2)

Magazines (1)

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Gregor Rozinaj(58)
G. Rozinaj(12)
Vivek Dwivedi(8)
Marek Vančo(7)
Jaroslav Venjarski(5)
Department of Telecommunications, Slovak University of Technology, Bratislava, Slovakia(9)
Institute of Telecommunications, Slovak University of Technology, Bratislava, Slovakia(9)
Faculty of Electrical Engineering and Information Technology, Slovak University of Technology, Bratislava, Slovakia(5)
Slovak University of Technology, Bratislava, Slovakia(4)
Slovak University of Technology in Bratislava, Bratislava, Slovakia(3)
ELMAR 2007(4)
Proceedings ELMAR-2013(4)
2016 International Conference on Systems, Signals and Image Processing (IWSSIP)(3)
2016 International Symposium ELMAR(3)
2022 International Symposium ELMAR(3)
IEEE(70)
Zadar, Croatia(35)
Bratislava, Slovakia(6)
Maribor, Slovenia(5)
Rhodes, Greece(3)
Borik Zadar, Croatia(2)
Speech Synthesis(23)
Speech Recognition(14)
Fundamental Frequency(10)
Speech Signal(10)
Virtually(10)

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Results

Exploring 3D Gaussian Splatting: An Algorithmic Perspective

Martin Hornáček;Gregor Rozinaj

2024 International Symposium ELMAR

Year: 2024 | Conference Paper |

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3D scene representation has long been a challenge in computer graphics and computer vision. 3D Gaussian Splat-ting, with its explicit scene representation and differentiable rendering algorithm promises not only the possibility of real-time scene rendering, but also introduces an unprecedented level of editability. These characteristics position 3D Gaussian Splatting as a groundbreaking solution f...Show More

Exploring 3D Gaussian Splatting: An Algorithmic Perspective

Martin Hornáček;Gregor Rozinaj

2024 International Symposium ELMAR

Year: 2024 | Conference Paper |

Keypoint-Based Foreground-Background Image Segmentation

Jaroslav Venjarski;L'uboš Likó;Šimon Tibenský;Marek Vančo;Gregor Rozinaj

2024 International Symposium ELMAR

Year: 2024 | Conference Paper |

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This article centers on foreground-background image segmentation techniques, with a particular focus on applications using two shifted or highly similar images. Our work critically examines prevalent image processing methodologies, leading to the development and implementation of an innovative algorithm for more precise segmentation. We initially unpack the concepts of image segmentation and stere...Show More

Keypoint-Based Foreground-Background Image Segmentation

Jaroslav Venjarski;L'uboš Likó;Šimon Tibenský;Marek Vančo;Gregor Rozinaj

2024 International Symposium ELMAR

Year: 2024 | Conference Paper |

Creating a Metaverse-Based Meeting Room with Live Avatar Control and Web Communication

Javlon Tursunov;Gregor Rozinaj;Ivan Minarik;Marek Vanco

2024 International Symposium ELMAR

Year: 2024 | Conference Paper |

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This paper presents the design and implementation of an interactive virtual meeting room aimed at revolutionizing remote communication as well as addressing the limitations of the current video conferencing systems by transitioning from traditional 2D video conferencing to an immersive 3D environment. The system integrates Python scripts and the MediaPipe library to detect and process body movemen...Show More

Creating a Metaverse-Based Meeting Room with Live Avatar Control and Web Communication

Javlon Tursunov;Gregor Rozinaj;Ivan Minarik;Marek Vanco

2024 International Symposium ELMAR

Year: 2024 | Conference Paper |

A Customizable WebRTC-based Video Conferencing System For Real-time Communication

Javlon Tursunov;Gregor Rozinaj;Vivek Dwivedi;Ivan Minárik

2024 31st International Conference on Systems, Signals and Image Processing (IWSSIP)

Year: 2024 | Conference Paper |

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In the dynamic landscape of modern communication, the demand for innovative virtual video conferencing solutions is ever-increasing. Our work presents an innovative approach to building a virtual video conferencing system that can be used by remote users with the help of a web page. Our system allows remote participants, joining via a web browser, to freely navigate and view the virtual environmen...Show More

A Customizable WebRTC-based Video Conferencing System For Real-time Communication

Javlon Tursunov;Gregor Rozinaj;Vivek Dwivedi;Ivan Minárik

2024 31st International Conference on Systems, Signals and Image Processing (IWSSIP)

Year: 2024 | Conference Paper |

Immersive Virtual Conference Room: Bridging the Gap Between Remote Collaboration and Physical Presence

Vivek Dwivedi;Mansi Bhatnagar;Javlon Tursunov;Gregor Rozinaj

2024 31st International Conference on Systems, Signals and Image Processing (IWSSIP)

Year: 2024 | Conference Paper |

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In this paper, the development of an immersive virtual conference room designed to replicate the experience of a physical meeting environment has been presented. Utilizing Unity software, authors have created a virtual space equipped with several simple screens instead of holograms, each attached with individual cameras. Live camera feeds seamlessly integrate real-time participant interactions wit...Show More

Immersive Virtual Conference Room: Bridging the Gap Between Remote Collaboration and Physical Presence

Vivek Dwivedi;Mansi Bhatnagar;Javlon Tursunov;Gregor Rozinaj

2024 31st International Conference on Systems, Signals and Image Processing (IWSSIP)

Year: 2024 | Conference Paper |

Adaptive Camera System for Enhanced Virtual Teleportation: Expanding the Boundaries of Immersive Experiences

Vivek Dwivedi;Mansi Bhatanagar;Mulham Maineh;Gregor Rozinaj

2023 International Symposium ELMAR

Year: 2023 | Conference Paper |

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This research article presents the utilization of an adaptive camera system for virtual teleport in videoconferencing, enabling users to experience remote locations in an immersive and interactive manner. The camera system incorporates features such as motion of camera system in X and Y axes, object tracking, and detection using Ultralytics YOLO V5 (You Only Look Once). The live video feed from th...Show More

Adaptive Camera System for Enhanced Virtual Teleportation: Expanding the Boundaries of Immersive Experiences

Vivek Dwivedi;Mansi Bhatanagar;Mulham Maineh;Gregor Rozinaj

2023 International Symposium ELMAR

Year: 2023 | Conference Paper |

Background Extraction from Image using Depth Estimation

Vladimír Hlačina;Jaroslav Venjarski;Šimon Tibenský;Gregor Rozinaj

2023 International Symposium ELMAR

Year: 2023 | Conference Paper |

Cited by: Papers (1)

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This article focuses on creating a 3D depth representation and successfully extracting the background based on the acquired results. Furthermore, this work deals with studying the current state of the art and exploring the possibilities of their practical application. The objective was also to study the issues related to background removal or modification in images and provide an overview of avail...Show More

Background Extraction from Image using Depth Estimation

Vladimír Hlačina;Jaroslav Venjarski;Šimon Tibenský;Gregor Rozinaj

2023 International Symposium ELMAR

Year: 2023 | Conference Paper |

Short-Term Electric Load Forecast Model Using the Combination of Ant Lion Optimization with Bi-LSTM Network

Mansi Bhatnagar;Vivek Dwivedi;Gregor Rozinaj

2023 30th International Conference on Systems, Signals and Image Processing (IWSSIP)

Year: 2023 | Conference Paper |

Cited by: Papers (3)

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The optimization of smart grids heavily relies on accurate electric load prediction, as the demand from consumers can significantly impact a country’s economic condition. Effective management of electric load requires analyzing the patterns of electricity demand and supply. The amount of recorded electric load data can vary in scale, depending on the duration and frequency of data collection. In t...Show More

Short-Term Electric Load Forecast Model Using the Combination of Ant Lion Optimization with Bi-LSTM Network

Mansi Bhatnagar;Vivek Dwivedi;Gregor Rozinaj

2023 30th International Conference on Systems, Signals and Image Processing (IWSSIP)

Year: 2023 | Conference Paper |

Analyzing Classical and LDI Depth-Aware Image Stitching for Enhanced Virtual View Representation

Jaroslav Venjarski;Šimon Tibenský;Gregor Rozinaj

2023 30th International Conference on Systems, Signals and Image Processing (IWSSIP)

Year: 2023 | Conference Paper |

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This article examines two image stitching methods for creating seamless images in stereo vision applications: a classical OpenCV-based approach and a depth-aware technique. Conventional methods, while effective for 2D image stitching, face limitations when applied to 3D scene reconstruction, where accurate depth information is crucial. We introduce a depth-aware image stitching method that utilize...Show More

Analyzing Classical and LDI Depth-Aware Image Stitching for Enhanced Virtual View Representation

Jaroslav Venjarski;Šimon Tibenský;Gregor Rozinaj

2023 30th International Conference on Systems, Signals and Image Processing (IWSSIP)

Year: 2023 | Conference Paper |

Automatic Image Stitching for Stereo Spherical Image

Jaroslav Venjarski;Vivek Dwivedi;Gregor Rozinaj

2022 International Symposium ELMAR

Year: 2022 | Conference Paper |

HTML

This paper deals with automatic image stitching of two or more images using OpenCV algorithm in computing environment Python. The aim of this work was to create a new image from various input pictures, from multiple camera positions using existing method proposed by OpenCV. The main goal is to prepare algorithm for image stitching where objects are relatively close to the camera. After testing the...Show More

Automatic Image Stitching for Stereo Spherical Image

Jaroslav Venjarski;Vivek Dwivedi;Gregor Rozinaj

2022 International Symposium ELMAR

Year: 2022 | Conference Paper |

Web Intrusion Classification System using Machine Learning Approaches

Mansi Bhatnagar;Gregor Rozinaj;Puneet Kumar Yadav

2022 International Symposium ELMAR

Year: 2022 | Conference Paper |

Cited by: Papers (3)

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Fast growth enhancement of web application has leaded to various security issues regarding intrusion not only in computer network framework but also web application themselves. Most of the techniques now in use in the context of Online Intrusion System (WIS) are unable to keep up with the complex and dynamic nature of cyber-attacks on web applications and issues linked to it. Attackers are using d...Show More

Web Intrusion Classification System using Machine Learning Approaches

Mansi Bhatnagar;Gregor Rozinaj;Puneet Kumar Yadav

2022 International Symposium ELMAR

Year: 2022 | Conference Paper |

3D Content Viewer Environment for Distant Learning

Šimon Tibenský;Vivek Dwivedi;Gregor Rozinaj

2022 International Symposium ELMAR

Year: 2022 | Conference Paper |

Cited by: Papers (1)

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The paper deals with the development of a web-based virtual environment that can effectively display 3D models in the form of teaching assistance. AR and 3D virtual environments working directly inside the web browser were used to display virtual objects. Since augmented reality is not implemented within the modern curricula for teaching purposes, our proposed approach to virtual environments comp...Show More

3D Content Viewer Environment for Distant Learning

Šimon Tibenský;Vivek Dwivedi;Gregor Rozinaj

2022 International Symposium ELMAR

Year: 2022 | Conference Paper |

Comprehensive Electric load forecasting using ensemble machine learning methods

Mansi Bhatnagar;Vivek Dwivedi;Divyanshu Singh;Gregor Rozinaj

2022 29th International Conference on Systems, Signals and Image Processing (IWSSIP)

Year: 2022 | Conference Paper |

Cited by: Papers (3)

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The accuracy of electric load forecasting is crucial when working on applications in power grid decision-making and operation. Due to the non-linear and stochastic behaviour of customers, the electric load profile is a complicated signal. In this paper, authors propose machine learning based automated system for electricity load forecasting, taking into consideration various variable factors that ...Show More

Comprehensive Electric load forecasting using ensemble machine learning methods

Mansi Bhatnagar;Vivek Dwivedi;Divyanshu Singh;Gregor Rozinaj

2022 29th International Conference on Systems, Signals and Image Processing (IWSSIP)

Year: 2022 | Volume: CFP2255E-ART | Conference Paper |

Multiple-camera System for 3D Object Detection in Virtual Environment using Intelligent Approach

Vivek Dwivedi;Mansi Bhatnagar;Jaroslav Venjarski;Gregor Rozinaj;Šimon Tibenský

2022 29th International Conference on Systems, Signals and Image Processing (IWSSIP)

Year: 2022 | Conference Paper |

Cited by: Papers (3)

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This work is the development of an adaptive multi-camera system for object detection which can be further adjusted for computational requirements. To get preliminary results, the whole project is simulated in a virtual environment for tracking the targeted object and to collect maximum information about the object’s features and characteristics. The virtual scene is developed using Unity software,...Show More

Multiple-camera System for 3D Object Detection in Virtual Environment using Intelligent Approach

Vivek Dwivedi;Mansi Bhatnagar;Jaroslav Venjarski;Gregor Rozinaj;Šimon Tibenský

2022 29th International Conference on Systems, Signals and Image Processing (IWSSIP)

Year: 2022 | Volume: CFP2255E-ART | Conference Paper |

User Gaze-Driven Adaptation of Omnidirectional Video Delivery Using Spatial Tiling and Scalable Video Encoding

Adam Polakovič;Gregor Rozinaj;Gabriel-Miro Muntean

IEEE Transactions on Broadcasting

Year: 2022 | Volume: 68, Issue: 3 | Journal Article |

Cited by: Papers (12)

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Omnidirectional video is becoming increasingly popular among viewers, but its delivery requires considerable amount of network bandwidth. Today’s streaming services are transmitting the full spatial angle of omnidirectional videos, although most of the transmitted content is not utilized. Due to both limited bandwidth availability and its dynamic fluctuations, adaptive delivery solutions play a ke...Show More

User Gaze-Driven Adaptation of Omnidirectional Video Delivery Using Spatial Tiling and Scalable Video Encoding

Adam Polakovič;Gregor Rozinaj;Gabriel-Miro Muntean

IEEE Transactions on Broadcasting

Year: 2022 | Volume: 68, Issue: 3 | Journal Article |

Game-Based Learning: Enhancing Student Experience, Knowledge Gain, and Usability in Higher Education Programming Courses

Dan Zhao;Cristina Hava Muntean;Adriana E. Chis;Gregor Rozinaj;Gabriel-Miro Muntean

IEEE Transactions on Education

Year: 2022 | Volume: 65, Issue: 4 | Journal Article |

Cited by: Papers (34)

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Contributions: This article presents a large-scale study which investigates students’ reaction to game-based learning as part of programming courses. The study focuses on knowledge acquisition, learner experience, and game usability. Background: Despite the rapid growth of the information and communication technologies (ICTs) sector, the lack of engagement with science, technology, engineering, an...Show More

Game-Based Learning: Enhancing Student Experience, Knowledge Gain, and Usability in Higher Education Programming Courses

Dan Zhao;Cristina Hava Muntean;Adriana E. Chis;Gregor Rozinaj;Gabriel-Miro Muntean

IEEE Transactions on Education

Year: 2022 | Volume: 65, Issue: 4 | Journal Article |

EduVirtual - Modern Educational Platform based on Multimedia Technologies

Marek Lóderer;Marek Vančo;Viera Rozinajová;Gabriel-Miro Muntean;Pavol Podhradský;Gregor Rozinaj

2019 International Symposium ELMAR

Year: 2019 | Conference Paper |

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This paper presents an innovative project in the field of education, which applies modern graphic technologies, such as virtual and augmented reality. The project consists of multiple applications, which are using various technologies for different learning purposes. The applications are connected through user profiles and results are sent to a central server where a teacher can see all students' ...Show More

EduVirtual - Modern Educational Platform based on Multimedia Technologies

Marek Lóderer;Marek Vančo;Viera Rozinajová;Gabriel-Miro Muntean;Pavol Podhradský;Gregor Rozinaj

2019 International Symposium ELMAR

Year: 2019 | Conference Paper |

Methodology and technologies for online education

Gregor Rozinaj;P. Podhradsky

2019 International Conference on Systems, Signals and Image Processing (IWSSIP)

Year: 2019 | Conference Paper |

Summary form only given, as follows. The complete presentation was not made available for publication as part of the conference proceedings. The educational process is as old as the mankind itself. Education of the younger generation is a complex task and every suitable tool has been used to improve the process. Nowadays, not only modern approaches like the student centric model, gamification, per...Show More

Methodology and technologies for online education

Gregor Rozinaj;P. Podhradsky

2019 International Conference on Systems, Signals and Image Processing (IWSSIP)

Year: 2019 | Conference Paper |

An Approach to Video Compression Using Saliency Based Foveation

Adam Polakovič;Radoslav Vargic;Gregor Rozinaj;Gabriel-Miro Muntean

2018 International Symposium ELMAR

Year: 2018 | Conference Paper |

Cited by: Papers (6)

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This research aims to increase quality of experience for video consumers by introducing an approach with saliency-based video foveation coupled with compression algorithm. This approach uses eye tracking information to build the saliency map and allows multiple usage scenarios. The approach can be used in single or multiple viewer environments. We evaluate the approach and provide results based on...Show More

An Approach to Video Compression Using Saliency Based Foveation

Adam Polakovič;Radoslav Vargic;Gregor Rozinaj;Gabriel-Miro Muntean

2018 International Symposium ELMAR

Year: 2018 | Conference Paper |

Adaptive Multimedia Content Delivery in 5G Networks using DASH and Saliency Information

Adam Polakovič;Radoslav Vargic;Gregor Rozinaj

2018 25th International Conference on Systems, Signals and Image Processing (IWSSIP)

Year: 2018 | Conference Paper |

Cited by: Papers (8)

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This research aims to increase quality of experience for video consumers by adaptive delivery of multimedia content. We summarize ways of detecting salient regions in observed scene and current state of dynamic adaptive streaming over HTTP (DASH). We propose to extend DASH video delivery system, based on saliency information gathered using eye tracking. This extension enables to enhance the qualit...Show More

Adaptive Multimedia Content Delivery in 5G Networks using DASH and Saliency Information

Adam Polakovič;Radoslav Vargic;Gregor Rozinaj

2018 25th International Conference on Systems, Signals and Image Processing (IWSSIP)

Year: 2018 | Conference Paper |

Augmented/Virtual Reality as a Tool of Self-Directed Learning

Gregor Rozinaj;Marek Vančo;Radoslav Vargic;Ivan Minárik;Adam Polakovič

2018 25th International Conference on Systems, Signals and Image Processing (IWSSIP)

Year: 2018 | Conference Paper |

Cited by: Papers (5)

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In this paper a role of virtual reality in self-directed learning is introduced and discussed. Within a H2020 project Newton a new platform for distance learning based on student centric model is designed and realized. Fields like learning management system, virtual laboratories, augmented reality, assessment method and multimodal system are important parts of the designed platform and are include...Show More

Augmented/Virtual Reality as a Tool of Self-Directed Learning

Gregor Rozinaj;Marek Vančo;Radoslav Vargic;Ivan Minárik;Adam Polakovič

2018 25th International Conference on Systems, Signals and Image Processing (IWSSIP)

Year: 2018 | Conference Paper |

WebRTC-based 3D videoconferencing system

Yevgeniya Sulema;Gregor Rozinaj

2017 International Symposium ELMAR

Year: 2017 | Conference Paper |

Cited by: Papers (1)

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The paper presents a concept of the videoconferencing system which enables 3D image capturing and reproduction. The full view of collocutors appearance is obtained by using four cameras. Reproduction of 3D video stream is carrying out by using 3D reflection-based display. The 3D video stream processing is fulfilled by a media-server. The software application is based on WebRTC technology. The prot...Show More

WebRTC-based 3D videoconferencing system

Yevgeniya Sulema;Gregor Rozinaj

2017 International Symposium ELMAR

Year: 2017 | Conference Paper |

Face recognition methods by using low resolution devices

Marian Špilka;Gregor Rozinaj

2016 International Symposium ELMAR

Year: 2016 | Conference Paper |

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This paper focuses on the face recognition based on low-cost devices. It contains the modern forms of the face processing in 3D. The first part of the paper shows the comparison of the portable scanners. In the next section the face recognition process is split into three phases - capturing, processing and classifying. The options how to capture the face are listed and also the common processing m...Show More

Face recognition methods by using low resolution devices

Marian Špilka;Gregor Rozinaj

2016 International Symposium ELMAR

Year: 2016 | Conference Paper |

Multimodal information in telecommunication systems: Analysis of technological readiness

Yevgeniya Sulema;Gregor Rozinaj

2016 International Symposium ELMAR

Year: 2016 | Conference Paper |

Cited by: Papers (1)

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Applications of multimodal information in telecommunications are discussed in this paper. The immersive teleconferencing system intended for registration, transmission and reproduction of multimodal information is discussed. This multimodal information includes 3D graphical data, surround sound data, and environmental data (temperature, air humidity, olfactory data, etc.). The analysis of existing...Show More

Multimodal information in telecommunication systems: Analysis of technological readiness

Yevgeniya Sulema;Gregor Rozinaj

2016 International Symposium ELMAR

Year: 2016 | Conference Paper |

Multimodal interface for smart home

Norbert Gyurian;Ivan Drozd;Gregor Rozinaj

2016 International Symposium ELMAR

Year: 2016 | Conference Paper |

Cited by: Papers (1)

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This paper deals with multimodal interface for smart living and its design. The first part of the article describes the topic of multimodal interface in general. The second part is focused on its architecture and design. This topic is nowadays very actual, because number of intelligent devices in our daily life increases very fast. They connect to the network and they are able to communicate betwe...Show More

Multimodal interface for smart home

Norbert Gyurian;Ivan Drozd;Gregor Rozinaj

2016 International Symposium ELMAR

Year: 2016 | Conference Paper |

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