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Catalog Publications

Year 2014
  • Propozycja silnika fizyki bryły sztywnej dla trójwymiarowej gry komputerowej

    Referat prezentuje autorski silnik dynamiki brył sztywnych działający w czasie rzeczywistym i przeznaczony do symulacji fizycznych na potrzeby gier komputerowych. Ze względu na przeznaczenie silnika przyjęto, że wiarygodność efektów symulacji będzie ważniejsza niż dokładne odwzorowanie zjawisk fizycznych. Pozwoliło to na zastosowanie uproszczonego modelu fizycznego i uzyskanie dzięki temu efektywnego silnika, radzącego sobie w...

  • Otwarcie Laboratorium Zanurzonej Wizualizacji Przestrzennej
    Publication

    - Pismo PG - Year 2014

    W piątek 5 grudnia 2014 r. odbyło się uroczyste otwarcie Laboratorium Zanurzonej Wizualizacji Przestrzennej (LZWP), zbudowanego i wyposażonego w ramach projektu „Nowoczesne Audytoria Politechniki Gdańskiej”, realizowanego w latach 2009–2014, finansowanego z Europejskiego Funduszu Rozwoju Regionalnego w ramach Programu Operacyjnego Infrastruktura i Środowisko.

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  • Optimization of Automata
    Publication

    - Year 2014

    This book is conceived as an effort to gather all algorithms and methods developed by the author of the book that concern three aspects of optimization of automata: incrementality, hashing and compression. Some related algorithms and methods are given as well when they are needed to complete the picture.

  • On Facial Expressions and Emotions RGB-D Database
    Publication

    - Year 2014

    The goal of this paper is to present the idea of creating reference database of RGB-D video recordings for recognition of facial expressions and emotions. Two different formats of the recordings used for creation of two versions of the database are described and compared using different criteria. Examples of first applications using databases are also presented to evaluate their usefulness.

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  • Launch of the Immersive 3D Visualization Laboratory

    The paper presents the concept of Immersive 3D Visualization Laboratory, formed at the Faculty of Electronics, Telecommunications and Informatics at Gdańsk University of Technology under the project Gdańsk University of Technology's Modern auditoriums. The basic unit of this laboratory will be cubic CAVE (Cave Automatic Virtual Environment) enriched with spherical walk simulator. This device will allow the user unlimited walking,...

  • Inteligentne hybrydowe systemy wyszukiwania informacji

    Istnieje wiele metod wyszukiwania informacji. Artykuł przedstawia możliwości połączenia tych metod i skonstruowania uniwersalnego, hybrydowego systemu wyszukiwania. W artykule zaproponowana została architektura personalnego agenta wyszukiwania (PAW). Posiada on cechy systemu ekspertowego, wyszukiwarki oraz agenta komputerowego. PAW pozwala na pozyskiwanie informacji personalnych tj. numery telefonów osób znajomych. Ponadto umożliwia...

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  • Innovative Solutions for Immersive 3D Visualization Laboratory
    Publication

    The paper presents results of the work concerning the technical specification of Immersive 3D Visualization Laboratory to be opened in late summer 2014 at the Faculty of Electronics, Telecommunications and Informatics at Gdańsk University of Technology in Poland. The person immersed in VR space will be placed in a transparent sphere with a diameter of over 10 feet, supported on rollers and equipped with a motion tracking system....

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  • Image projection in Immersive 3D Visualization Laboratory

    In recent years, many centers in the world attempted to build a virtual reality laboratory. The main idea of such laboratory is to allow the user to “immerse” into and move in a computer-generated virtual world. In the paper, the underlying principles of the system of virtual reality (VR) are described. The selected implementations constructed by the research centers of the world are also presented. The cave automatic virtual environment...

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Year 2002
Year 2003
Year 2018
  • Programowanie strukturalne
    Publication

    Celem niniejszej książki jest przedstawienie wybranych metod programowania strukturalnego, tzn. takich, które prowadzą do poprawnej struktury, poprawy jakości oprogramowania oraz zwiększenia efektywności programistów. Może ona służyć jako podręcznik akademicki wykorzystywany na podstawowych kursach inżynierii oprogramowania. Zainteresuje również wszystkich tych, którzy zajmują się programowaniem amatorskim i chcą poszerzyć swoją...

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  • Normalization of face illumination using basic knowledge and information extracted from a single image
    Publication

    This paper presents a method for face image normalization that can be applied to the extraction of illumination invariant facial features or used to remove bad lighting effects and produce high-quality, photorealistic results. Most of the existing approaches concentrate on separating the constant albedo from the variable light intensity; that concept, however, is based on the Lambertian model, which fails in the presence of specularities...

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Year 2015
  • Preserving Trees in Automata
    Publication

    - Year 2015

    We present a method to store additional information in a minimal automaton so that it is possible to compute a corresponding tree node number for a state. The number can then be used to retrieve additional information. The method works for minimal (and any other) deterministic acyclic finite state automata (DFAs). We also show how to compute the inverse mapping.

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  • Multiscaled Hybrid Features Generation for AdaBoost Object Detection

    This work presents the multiscaled version of modified census features in graphical objects detection with AdaBoost cascade training algorithm. Several experiments with face detector training process demonstrate better performance of such features over ordinal census and Haar-like approaches. The possibilities to join multiscaled census and Haar features in single hybrid cascade of strong classifiers are also elaborated and tested....

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  • Możliwości wyszukiwania dokumentów muzycznych utworzonych zgodnie z architekturą IODA

    Artykuł przedstawia zagadnienie zastosowania dokumentów muzycznych utworzonych zgodnie z architekturą IODA (ang. Interactive Open Document Architecture). Dokumenty w architekturze IODA składają się z wielu plików powiązanych ze sobą semantycznie. Zależności te definiowane są w tzw. grzbiecie (ang. spine) dokumentu będącym plikiem w formacie XML (ang. eXtensible Markup Language). Dokumenty muzyczne tworzone zgodnie z architekturą...

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  • Modeling emotions for affect-aware applications

    The chapter concerns emotional states representation and modeling for software systems, that deal with human affect. A review of emotion representation models is provided, including discrete, dimensional and componential models. The paper provides also analysis of emotion models used in diverse types of affect-aware applications: games, mood trackers or tutoring systems. The analysis is supported with two design cases. The study...

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  • Model of emotions for game players
    Publication

    - Year 2015

    Affect-aware video games can respond to a game player's emotions. Such games seem to be more attractive for users. Therefore for that kind of games it is necessary to create a model of the player's emotions to know to which emotions the application should react. The paper describes different models of emotions. The questionnaire and experiment for video game players is presented. Some results of the tests are shown. Then the model...

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  • Local Texture Pattern Selection for Efficient Face Recognition and Tracking

    This paper describes the research aimed at finding the optimal configuration of the face recognition algorithm based on local texture descriptors (binary and ternary patterns). Since the identification module was supposed to be a part of the face tracking system developed for interactive wearable computer, proper feature selection, allowing for real-time operation, became particularly important. Our experiments showed that it is...

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  • Interactions with recognized patients using smart glasses
    Publication

    - Year 2015

    Recently, different smart glasses solutions have been proposed on the market. The rapid development of this wearable technology has led to several research projects related to applications of smart glasses in healthcare. In this paper we propose a general architecture of the system enabling data integration for the recognized person. In the proposed system smart glasses integrates data obtained for the recognized patient from health...

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  • Improving depth maps of plants by using a set of five cameras
    Publication

    Obtaining high-quality depth maps and disparity maps with the use of a stereo camera is a challenging task for some kinds of objects. The quality of these maps can be improved by taking advantage of a larger number of cameras. The research on the usage of a set of five cameras to obtain disparity maps is presented. The set consists of a central camera and four side cameras. An algorithm for making disparity maps called multiple...

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Year 2019
Year 2017
  • Podstawy projektowania interfejsów użytkownika
    Publication

    - Year 2017

    Dobry interfejs użytkownika to podstawa sukcesu każdej aplikacji! Poznaj różne sposoby komunikowania się użytkownika z komputerem. Dowiedz się, co w kwestii interfejsu użytkownika oferują współczesne urządzenia i programy Naucz się projektować efektowne i proste w obsłudze interfejsy użytkownika. Interfejs użytkownika to wizytówka każdej aplikacji komputerowej i strony WWW, a także brama zapewniająca dostęp do ich funkcji. Nawet...

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  • Playback detection using machine learning with spectrogram features approach
    Publication

    - Year 2017

    This paper presents 2D image processing approach to playback detection in automatic speaker verification (ASV) systems using spectrograms as speech signal representation. Three feature extraction and classification methods: histograms of oriented gradients (HOG) with support vector machines (SVM), HAAR wavelets with AdaBoost classifier and deep convolutional neural networks (CNN) were compared on different data partitions in respect...

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  • Playback Attack Detection: The Search for the Ultimate Set of Antispoof Features
    Publication

    - Year 2017

    Automatic speaker verification systems are vulnerable to several kinds of spoofing attacks. Some of them can be quite simple – for example, the playback of an eavesdropped recording does not require any specialized equipment nor knowledge, but still may pose a serious threat for a biometric identification module built into an e-banking application. In this paper we follow the recent approach and convert recordings to images, assuming...

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  • Multiclass AdaBoost Classifier Parameter Adaptation for Pattern Recognition

    The article presents the problem of parameter value selection of the multiclass ``one against all'' approach of an AdaBoost algorithm in tasks of object recognition based on two-dimensional graphical images. AdaBoost classifier with Haar features is still used in mobile devices due to the processing speed in contrast to other methods like deep learning or SVM but its main drawback is the need to assembly the results of binary...

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Year 2024
  • Overcoming Phobias: Harnessing the Power of Immersive Virtual Reality Therapy
    Publication

    - Year 2024

    The goal of the chapter was to review the different therapeutic techniques used in the treatment of various forms of phobias, with particular emphasis on virtual reality treatment. We define different types of phobias, including social ones. We also describe treatment techniques – adopted from behavioral therapy – which have been developed to aid the treatment of phobias. Particular emphasis has been placed on the flooding, implosive...

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Year 2013
  • Next Generation Digital

    The paper outlines the major objectives of the MENAID research project, eimed at novel architectures of digital documents. Such documents will enable reduction of information overflow and strain, a major threat to the growth of a digital society. They will be forward compatible, technology neutral and lightweight, allowing workers of network organizations to use personal devices of any type.

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  • Model otwartej architektury rozproszonych dokumentów elektronicznych wspierającej proces podejmowania decyzji w trybie obliczeń zespołowych
    Publication

    - Year 2013

    Model otwartej architektury mobilnych dokumentów interaktywnych MIND, został opracowany w celu efektywnego zarządzania informacją w procesach podejmowanych przez organizacje oparte na wiedzy. Architektura ta stanowi całościowy opis struktury i funkcjonalności dokumentu, zaprojektowanego w celu realizacji rozproszonego przetwarzania zespołowego i pracy grupowej. Umożliwia automatyczne przejście od statycznej postaci dokumentów...

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  • LZWP, czyli jak zbudować CAVE
    Publication

    Referat prezentuje wyniki prac autorów dotyczących specyfikacji technicznej instalacji typu CAVE tworzonej na Wydziale ETI Politechniki Gdańskiej. Przedstawiona analiza została dokonana na pod-stawie wiedzy autorów, studiów literaturowych, wizytacji wybranych instalacji w kraju i zagranicą oraz konsultacji z firmami będącymi wiodącymi producentami lub integratorami systemów 3D.

  • Information Retrieval with the Use of Music Clustering by Directions Algorithm
    Publication

    - Year 2013

    This paper introduces the Music Clustering by Directions (MCBD) algorithm. The algorithm is designed to support users of query by humming systems in formulating queries. This kind of systems makes it possible to retrieve songs and tunes on the basis of a melody recorded by the user. The Music Clustering by Directions algorithm is a kind of an interactive query expansion method. On the basis of query, the algorithm provides suggestions...

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  • Influence of a Radio Frequency on RF Fingerprinting Accuracy Based on Ray Tracing Simulation
    Publication

    - Year 2013

    In this paper the influence of a radio signal frequency on performance of Indoor Positioning System based on fingerprinting has been examined using ray-tracing simulations. It has been simulated how spatial distribution of an RF signal strength change with the signal’s frequency. The results were used to show its’ impact on the behavior of localization algorithms that are employing RSS measurements to determine node’s position...

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Year 2021
Year 2016
Year 2022
  • Linking music data in executable documents
    Publication

    - Year 2022

    This paper presents the application of Interactive Open Document Architecture (IODA) to music and video data. This architecture was design to create multilayer documents which consist of many files. The paper shows the method of creating media documents on the basis of IODA. These kind of documents were called IODA Media Documents (IMD). IMD have links that connect many different kinds of files containing music and video data....

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  • Language Models in Speech Recognition
    Publication

    - Year 2022

    This chapter describes language models used in speech recognition, It starts by indicating the role and the place of language models in speech recognition. Mesures used to compare language models follow. An overview of n-gram, syntactic, semantic, and neural models is given. It is accompanied by a list of popular software.

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  • Human emotion recognition with biosignals
    Publication

    - Year 2022

    This chapter presents issues in the field of affective computing. Basic preliminary information for the recognition of emotions is given and models of emotions, various ways of evoking emotions, as well as their theoretical foundations are discussed. The particular attention is given to the use of physiological signals in recognizing emotions. This subject is outlined further below by presenting selected biosignals, their relationship...

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  • Graphical interface adaption for children to explain astronomy proportions and distances
    Publication
    • K. García Martínez
    • J. Lebiedź
    • A. Iglesias Bustillo

    - Computer Science Research Notes - Year 2022

    Mobile Science Center is a Polish project that seeks to bring astronomy knowledge to wider social groups through various applications. In its development it is necessary to design a graphical interface that explains a concept that is difficult to assimilate such as spatial proportions and distances. This paper develops a framework to create graphical representations that explain this learning to the target audience of children....

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