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Tytuł:
Pattern Recognition Algorithm for Eye Tracker Sensor Video Data Analysis
Autorzy:
Murawski, K.
Różanowski, K.
Powiązania:
https://bibliotekanauki.pl/articles/1399387.pdf
Data publikacji:
2013-09
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
42.30.Sy
42.30.Va
07.05.Pj
Opis:
The aim of the paper is to discuss research conducted at the Military University of Technology as well as the Military Institute of Aviation Medicine. The essence of the research is to develop a pattern recognition algorithm for the analysis of data received from an eye tracker sensor. Data analysis can be done using computer vision algorithms. In the article the state of the art pattern recognition algorithms were presented. Particular attention was paid to the possibilities and limitations of their use. The main part of the paper is the presentation of the author's pattern recognition algorithm. In the paper we have also shown the results obtained by other techniques of image processing, which are frequently used to determine the position of the pupil of the eye on the image.
Źródło:
Acta Physica Polonica A; 2013, 124, 3; 509-512
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Klasyfikacja i zliczanie pojazdów na podstawie danych wideo
Vehicle classification and counting on the basis of video data
Autorzy:
Czapla, Z.
Powiązania:
https://bibliotekanauki.pl/articles/312559.pdf
Data publikacji:
2016
Wydawca:
Instytut Naukowo-Wydawniczy "SPATIUM"
Tematy:
ruch drogowy
dane obrazowe
pojazdy
metody przetwarzania obrazu
klasyfikacja pojazdów
zliczanie pojazdów
pomiary parametrów ruchu drogowego
road traffic
vehicle classification
image data
vehicles
image processing approaches
couting vehicles
measuring traffic parameters
Opis:
Artykuł przedstawia metodę klasyfikacji i zliczania pojazdów na podstawie danych wideo. Wejściowa sekwencja obrazów składa się z ramek pobranych ze strumienia wideo otrzymywanego z kamery umieszczonej nad drogą. Poszczególne obrazy wejściowej sekwencji obrazów są przetwarzane oddzielnie. Definiowane są dwa pola detekcji, początkowe pole detekcji i końcowe pole detekcji. Obrazy wejściowej sekwencji obrazów są konwertowane do reprezentacji punktowej. Obliczana jest suma punktów krawędziowych dla każdego pola detekcji. Na podstawie sum punktów krawędziowych wyznaczane są stany pól detekcji. Analiza stanów pól detekcji umożliwia klasyfikację i zliczanie pojazdów. W artykule zamieszczono wyniki pomiarów.
The paper presents a method of vehicle classification and counting on the basis of video data. The input image sequence consists of consecutive frames taken from the video stream obtained from the camera placed above a road. Individual images from the input image sequence are processed separately. Two detection fields are defined, the initial detection field and the final detection field. Images from the input image sequence are converted into point representation. The sum of the edge points is calculated for each detection field. On the basis of the sums of edge points, states of the detection fields are determined. Analysis of the states of the detection fields allows vehicle classification and counting. Experimental results are provided.
Źródło:
Autobusy : technika, eksploatacja, systemy transportowe; 2016, 17, 6; 562-565
1509-5878
2450-7725
Pojawia się w:
Autobusy : technika, eksploatacja, systemy transportowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Vision and Performance. The Sociolinguistic Analysis of Genres and Its Application to Focussed Ethnographic Data
Autorzy:
Schnettler, Bernt
Powiązania:
https://bibliotekanauki.pl/articles/2138571.pdf
Data publikacji:
2008-12-30
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
Video-data
Genre-analysis
Ethnography
Religious experiences
New religious movements
Opis:
The use of audiovisual recording devices is changing the practice of qualitative research. Extensive corpus of data can be generated in (shortterm) focussed fieldwork. Nevertheless, methods to analyse video data are still in an experimental stage. This article explores the benefits and limitations of applying sociolinguistic genre analysis to audio-visual data. This is illustrated with a case study, based on the videotaped »deep-trance vision« of a New Religious Movement’s spiritual leader, which is one the most famous contemporary religious visionaries in Germany. The analysis aims to reconstruct the construction of this religious experience of transcendence from the perspective of its followers. We will examine three different levels of communication (a) the inner context, exploring the textual, gestural, mimical and prosodic aspects, (b) the intermediate level where the focus lies on the setting and decorum, and finally (c) the outer context, focussing on the social embedding of this form of »transcendent« communication and its filmic presentation. The article closes with a reflection on the need to combine hermeneutic analysis of case studies based on textual analysis with ethnographic field data and observation to contextualise its interpretation.
Źródło:
Qualitative Sociology Review; 2008, 4, 3; 59-83
1733-8077
Pojawia się w:
Qualitative Sociology Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On-water video surveillance: data management for a ship identification system
Autorzy:
Popik, Adrian
Zaniewicz, Grzegorz
Wawrzyniak, Natalia
Powiązania:
https://bibliotekanauki.pl/articles/134912.pdf
Data publikacji:
2019
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
video surveillance
cameras
image
processing
ship identification
River Information Services
Opis:
Video surveillance on both marine and inland waters still only plays a mainly auxiliary role in vessel traffic observation and management. The newest technical achievements in visual systems allow camera images to be used in more sophisticated tasks, such as automatic vessel recognition and identification in observed areas. With the use of deep learning algorithms and other artificial intelligence methods, such as rough sets and fuzzy sets, new functions can be designed and implemented in monitoring systems. In this paper the challenges that were encountered and the technology that has been developed in managing video streams are presented as well as the images needed for tests and proper operation of the designed Ship Recognition and Identification System (SHREC). The current technologies, typical setups and capabilities of cameras, with regard to existing on-water video monitoring systems, are also presented. The aspects of collecting the test data in the Szczecin Water Junction area are also described. The main part of the article focuses on presenting the video data pre-processing, storing and managing procedures that have been developed for the purposes of the SHREC system.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2019, 60 (132); 56-63
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Video detection data as important factor for transport systems safety improvement
Autorzy:
Mazurkiewicz, J.
Powiązania:
https://bibliotekanauki.pl/articles/2069117.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:
discrete transport system
road monitoring
vehicle recognition
Augmented Reality
AR
Autonomous Vehicles
AV
ANPR
MMR
Opis:
The paper presents the analysis and discussion of video detection data usage for discrete transport systems safety improvement. The Autonomous Vehicles (AV) and the Augmented Reality (AR) research in connection with a Driving Assistance (DA) are presented. This article is going to show where the border between those two fields of interest is and how they are going to influence on the future of automotive. The proposal of the AR system – based on soft-computing methods used for an object classification problem – is given. The input data are taken from the real traffic monitoring system located at the set of roads in Poland. Data from the monitoring devices are used to analyze the travel time of vehicles – elements of the transportation system. The travel time model taking into account the real road situation is built. The proposed solution can be an essential tool for the owner and administrator of the transportation systems
Źródło:
Journal of Polish Safety and Reliability Association; 2016, 7, 1; 167--176
2084-5316
Pojawia się w:
Journal of Polish Safety and Reliability Association
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Badania wizualne na rozdrozu.
VISUAL RESEARCH AT THE CROSSROADS.
Autorzy:
Grady, John
Powiązania:
https://bibliotekanauki.pl/articles/1373929.pdf
Data publikacji:
2009
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
COMMUNICATING RESEARCH FINDINGS
INTERPRETATION
METHODOLOGY
PHOTO ELICITATION
PHOTOGRAPHY
VIDEO DATA
VISUAL DATA
VISUAL METHODS
Opis:
The author argues that visual methods are at the crossroads. They can remain in a niche or move into the mainstream by also addressing all people using visual materials. In the social sciences, visual methods encompass photography, video, and graphic representations. With respect to the visual, one has to note that all interpretations that are ontologically dependent on photography require more interpretation. 'Looking at' means 'being framed by,' and this means also the picture maker who is also considered to be a viewer. For the social sciences, pictures provide us with personal insights as well as with a personal record of spatial and social relationships. On this basis one may raise questions like 'how pattern variations occur over time?', 'how are social processes organized?', or 'what is the role of emotion in social life?' These are issues, the author continues, to which visual data can contribute. It may be added that methodological discussion should, however, besides the areas of visual data generation, analysis and interpretation also include solutions for the problem of communicating research findings. Some of these questions can be approached via controlled photo-observation, photo-elicitation techniques and imagery provided by the subjects themselves. Finally, the author turns to the question of what remains to be done? Here, he delineates three main areas: (1) evaluating the theoretical and conceptual basis of visual research, (2) creating public databases for the development and testing of theories, (3) defining 'best practices' for visual research.
Źródło:
Przegląd Socjologii Jakościowej; 2009, 5, 2; 82-117
1733-8069
Pojawia się w:
Przegląd Socjologii Jakościowej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Traffic Video and VANET data fusion algorithm
Autorzy:
Bernaś, M.
Powiązania:
https://bibliotekanauki.pl/articles/393489.pdf
Data publikacji:
2012
Wydawca:
Polskie Stowarzyszenie Telematyki Transportu
Tematy:
Vanet
detekcja
algorytm fuzji
detection
fusion algorithm
Opis:
Modern Intelligent Transport Systems incorporate the traffic control strategies that are based not only on long term traffic analysis and forecasts, but also on the real time events detection like accidents or high congestion. The flexibility of these systems depends on accurate and precise data set describing the current state of road network. To estimate it, the data from various sources like: video surveillance, induction loops or vehicles itself (Vehicle to Infrastructure communication -V2I) is gathered. Excluding detection errors, the video surveillance data is a reliable source of general information about the traffic flow. On the other hand, the vehicle communication can provide less reliable, but more detailed information about a particular vehicle like: its engine state or planned manoeuvre. Unreliable or forged C2I information can be used to disturb traffic or to gain a higher priority on the road. The paper reviews the fusion algorithms that are used to merge data from video tracking algorithms and vehicular networks. Based on the survey, a weighted fusion algorithm is proposed that estimates the acquired data reliability. The algorithm uses the video surveillance data as a filter for C2I communication. Finally, applications for microscopic traffic models and safety issues are taken into consideration.
Źródło:
Archives of Transport System Telematics; 2012, 5, 2; 3-8
1899-8208
Pojawia się w:
Archives of Transport System Telematics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
3D modeling of architectural objects from video data obtained with the fixed focal length lens geometry
Modelowanie 3D obiektów architektonicznych na podstawie danych wideo pozyskanych z wykorzystaniem obiektywu stało-ogniskowego
Autorzy:
Deliś, P.
Kędzierski, M.
Fryśkowska, A.
Wilińska, M.
Powiązania:
https://bibliotekanauki.pl/articles/972663.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
obraz wideo
orientacja obrazu
pakiet regulacji
modelowanie 3D
video image
image orientation
bundle adjustment
terrestrial laser scanning
3D modeling
Opis:
The article describes the process of creating 3D models of architectural objects on the basis of video images, which had been acquired by a Sony NEX-VG10E fixed focal length video camera. It was assumed, that based on video and Terrestrial Laser Scanning data it is possible to develop 3D models of architectural objects. The acquisition of video data was preceded by the calibration of video camera. The process of creating 3D models from video data involves the following steps: video frames selection for the orientation process, orientation of video frames using points with known coordinates from Terrestrial Laser Scanning (TLS), generating a TIN model using automatic matching methods. The above objects have been measured with an impulse laser scanner, Leica ScanStation 2. Created 3D models of architectural objects were compared with 3D models of the same objects for which the self-calibration bundle adjustment process was performed. In this order a PhotoModeler Software was used. In order to assess the accuracy of the developed 3D models of architectural objects, points with known coordinates from Terrestrial Laser Scanning were used. To assess the accuracy a shortest distance method was used. Analysis of the accuracy showed that 3D models generated from video images differ by about 0.06 ÷ 0.13 m compared to TLS data.
Artykuł zawiera opis procesu opracowania modeli 3D obiektów architektonicznych na podstawie obrazów wideo pozyskanych kamerą wideo Sony NEX-VG10E ze stałoogniskowym obiektywem. Przyjęto założenie, że na podstawie danych wideo i danych z naziemnego skaningu laserowego (NSL) możliwe jest opracowanie modeli 3D obiektów architektonicznych. Pozyskanie danych wideo zostało poprzedzone kalibracją kamery wideo. Model matematyczny kamery był oparty na rzucie perspektywicznym. Proces opracowania modeli 3D na podstawie danych wideo składał się z następujących etapów: wybór klatek wideo do procesu orientacji, orientacja klatek wideo na podstawie współrzędnych odczytanych z chmury punktów NSL, wygenerowanie modelu 3D w strukturze TIN z wykorzystaniem metod automatycznej korelacji obrazów. Opracowane modele 3D zostały porównane z modelami 3D tych samych obiektów, dla których została przeprowadzona samokalibracja metodą wiązek. W celu oceny dokładności opracowanych modeli 3D obiektów architektonicznych wykorzystano punkty naziemnego skaningu laserowego. Do oceny dokładności wykorzystano metodę najkrótszej odległości. Analiza dokładności wykazała, że dokładność modeli 3D generowanych na podstawie danych wideo wynosi około 0.06 ÷ 0.13m względem danych NSL.
Źródło:
Geodesy and Cartography; 2013, 62, 2; 123-138
2080-6736
2300-2581
Pojawia się w:
Geodesy and Cartography
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Learning analytics in synchronous online education: Making video conferencing more data-driven and interactivity-focused
Autorzy:
Vashisht, Vaibhav
Gautam, Prashant
Powiązania:
https://bibliotekanauki.pl/articles/1827682.pdf
Data publikacji:
2020-11
Wydawca:
Szkoła Główna Handlowa w Warszawie
Tematy:
videoconferencing
online learning
learning analytics
students’ data
synchronous education
Opis:
COVID-19 has been a turning point for online learning across the world, but the remarkable story has been the meteoric growth of synchronous or “live” online education. As instructors around the world have turned to video conferencing platforms to teach, a lot of instructor feedback has recently emerged on a variety of topics. One of the key emerging issues for instructors and institutions has been extracting and consolidating data on student engagement and learning outcomes. This paper attempts to identify and classify the types of learning data required to understand student learning behavior in synchronous (or “live”) online classes based on a multitude of factors such as immediacy, consolidation, and availability to different stakeholders at different points in time. Further, an attempt is made to assess how popular video conferencing platforms address the issues of data generation, presentation, and collation. Lastly, the paper also proposes an alternative approach that can potentially help create data in an easier, more efficient manner.
Źródło:
e-mentor. Czasopismo naukowe Szkoły Głównej Handlowej w Warszawie; 2020, 86, 4; 54-61
1731-6758
1731-7428
Pojawia się w:
e-mentor. Czasopismo naukowe Szkoły Głównej Handlowej w Warszawie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Reliability of data obtained from video systems of traffic surveillance
Autorzy:
Stawowy, M.
Powiązania:
https://bibliotekanauki.pl/articles/393435.pdf
Data publikacji:
2010
Wydawca:
Polskie Stowarzyszenie Telematyki Transportu
Tematy:
telematyka
niezawodność informacji
nadzór ruchu
telematics
information reliability
traffic surveillance
Opis:
The paper presents a way for estimating the reliability of data obtained with video systems of traffic surveillance. It describes the elements of factors determining the reliability of this indicator and presents a method for determining it using a computer simulation. This indicator can be used for assessing the quality of services.
Źródło:
Archives of Transport System Telematics; 2010, 3, 3; 46-51
1899-8208
Pojawia się w:
Archives of Transport System Telematics
Dostawca treści:
Biblioteka Nauki
Artykuł

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