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Tytuł:
Face Tracking and Recognition with the Use of Particle-Filtered Local Features
Autorzy:
Stasiak, Ł. A.
Pacut, A.
Powiązania:
https://bibliotekanauki.pl/articles/308537.pdf
Data publikacji:
2010
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
biometrics
face recognition
particle filtering
video analysis
Opis:
A consistent particle filtering-based framework for the purpose of parallel face tracking and recognition from video sequences is proposed. A novel approach to defining randomized, particle filtering-driven local face features for the purpose of recognition is proposed. The potential of cumulating classification decisions based on the proposed feature set definition is evaluated. By applying cumulation mechanisms to the classification results determined from single frames and with the use of particle-filtered features, good recognition rates are obtained at the minimal computational cost. The proposed framework can operate in real-time on a typical modern PC. Additionally, the application of cumulation mechanisms makes the framework resistant to brief visual distortions, such as occlusions, head rotations or face expressions. A high performance is also obtained on low resolution images (video frames). Since the framework is based on the particle filtering principle, it is easily tunable to various application requirements (security level, hardware constraints).
Źródło:
Journal of Telecommunications and Information Technology; 2010, 4; 26-36
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Narratives in Illness: A Methodological Note
Autorzy:
Hydén, Lars-Christer
Powiązania:
https://bibliotekanauki.pl/articles/2138572.pdf
Data publikacji:
2008-12-30
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
Narrative
Methodology
Identity
Performance
Ethnography
Video analysis
Opis:
As a result of the general growth in the interest in narratives different conception of what a story is and how to analyze has emerged. One especially interesting and methodological relevant difference is between the conception of narratives as textual objects and narratives as part of a storytelling event. The paper discusses the theoretical differences between these two analytical approaches to narratives. An example from my own research on Alzheimer’s patients telling stories illustrate the possibilities of using a performative and micro ethnographic approach to the study of storytelling in order to understand the functions of narratives – especially in relation to identity work. If stories not only are thought of as representations of events it becomes possible to view stories and story telling as social action: social states are both established, negotiated and changed through stories. This is especially important in the field of health and illness where diseases almost always are embedded in conversations and the telling of why and how symptoms were discovered or traumas received. For many patients and persons with especially communicative disabilities story telling is a challenge, but also an opportunity to actually master, maintain and often transform their identities.
Źródło:
Qualitative Sociology Review; 2008, 4, 3; 49-58
1733-8077
Pojawia się w:
Qualitative Sociology Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Spectral analysis by a video camera in a holographic optical tweezers setup
Autorzy:
Drobczynski, S
Dus-Szachniewicz, K
Symonowicz, K.
Glogocka, D
Powiązania:
https://bibliotekanauki.pl/articles/174701.pdf
Data publikacji:
2013
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
holographic optical tweezers
power spectrum density
video analysis
Opis:
We discuss the basic parameters of the holographic tweezers equipped with a diode laser and cheap video camera. We compare these parameters with the system using a fast camera and high power Nd:YAG laser. The measured parameters are: the power spectra density calculated from tracing the position of the micron polystyrene beads and the trap stiffness. We show that this cheap optical tweezers system is sufficient for experiments in microbiology.
Źródło:
Optica Applicata; 2013, 43, 4; 739-746
0078-5466
1899-7015
Pojawia się w:
Optica Applicata
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Synchronization of data recorded using acquisition stations with data from camera during the bubble departure
Autorzy:
Dzienis, P.
Mosdorf, R.
Powiązania:
https://bibliotekanauki.pl/articles/102394.pdf
Data publikacji:
2013
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
experimental data synchronization
time series
video analysis
bubble departure
Opis:
In this study the first part of the experimental data was recorded in a data acquisition station, and another one was recorded with a high speed camera. The data recorded using the acquisition station was recorded with higher frequency than the time between two subsequent frames of the film. During the analysis of the experimental data the problem was related to the synchronization of measurement from acquisition station and data recorded with a camera. In this paper the method of synchronization of experimental data has been shown. A laser- phototransistor system has been used. The data synchronization was required in scaling of sampling frequency in the investigated time series.
Źródło:
Advances in Science and Technology. Research Journal; 2013, 7, 20; 29-34
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Reconstruction of traffic situations from digital video-recording using method of volumetric kinetic mapping
Autorzy:
Kolla, Eduard
Ondruš, Ján
Vertal', Peter
Powiązania:
https://bibliotekanauki.pl/articles/263457.pdf
Data publikacji:
2019
Wydawca:
Sieć Badawcza Łukasiewicz. Przemysłowy Instytut Motoryzacji
Tematy:
traffic accidents
near-miss incidents
video analysis
accident reconstruction
PC-Crash
Opis:
In the past the traffic accident reconstruction was based in principle only on indirect methods that use accident marks and witness reports. These data were then used within backward reconstruction of event for determination of motion status of accident participants and expression of desirable quantities as are initial velocities, impact velocities, distances travelled or temporal conditions. These methods and their accuracy are dependent on the width of intervals of input quantities or on limited possibilities for motion synchronization between numerable participants of road traffic accidents. Existence of footage from CCTV cameras that captures traffic situations presents very valuable source of information about these accidents. The goal of the article is proposal of a volumetric kinetic mapping (VKM) method of accident reconstruction from CCTV footage. The method is based on synthesis of videoediting, videoanalysis and kinetic simulation using dedicated software for accident reconstruction. The method was furthermore validated for speed-time and distance-time variables by means of experimental test runs and by subsequent application of the method in the reconstruction of these tests using PC-Crash simulation software and two videoediting software packages. Results of the reconstructions of validation runs using VKM method were then verified by comparing them to the measured data from Corrsys Datron Microstar measuring system.
Źródło:
Archiwum Motoryzacji; 2019, 84, 2; 147-170
1234-754X
2084-476X
Pojawia się w:
Archiwum Motoryzacji
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The (Re)Construction of Human Conduct: “Vernacular Video Analysis”
Autorzy:
Tuma, René
Powiązania:
https://bibliotekanauki.pl/articles/2108248.pdf
Data publikacji:
2012-08-30
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
Vernacular Video Analysis
Ethnomethodology
Interpretation
Interaction
Video
Workplace Studies
Visual Knowledge
Reflective Methods
Scientific Practice
Experts
Opis:
Video technology became available in the 1960s and massively diffused into nearly all institutional spheres during the following decades (Zielinski 1986). It is not only used for provision of movies and entertainment (Greenberg 2008), documenting, and recording of events in the semi-professional and private domain (Raab 2008), but also for the analysis of human conduct in psychology and education (Mittenecker 1987) and in sociology (Knoblauch et al. 2006; Knoblauch et al. 2008; Kissmann 2009; Heath, Hindmarsh and Luff 2010). In this paper, I am going to argue that with the availability of video technology a form of discursive practice of interpretive (re)construction of knowledge has been established in a variety of vernacular fields of practice. Based on the available literature and an empirical example taken from a public demonstration of such a vernacular video analysis, I will show some elements of communicative practice that allow for detailed analysis of visual knowledge. Furthermore, I will discuss methodological issues, as to be approached, and which elements can be found that constitute the communicative (re)constructive processes of analysis. 
Źródło:
Qualitative Sociology Review; 2012, 8, 2; 152-163
1733-8077
Pojawia się w:
Qualitative Sociology Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Videography in Migration Research: A Practical Example for the Use of an Innovative Approach
Autorzy:
Rebstein, Bernd
Powiązania:
https://bibliotekanauki.pl/articles/2108250.pdf
Data publikacji:
2012-08-30
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
Video-Analysis
Genre Analysis
Videography
Focused Ethnography
Migration
Integration
Cross-Cultural Expansion
Cross-Cultural Events
Opis:
This article is an example of the practical application of natural video recordings to qualitative research. It describes the videographic method in relation to an ongoing project concerned with forms of knowledge communication within the field of migration. In this field, our visual approach provides a novel perspective on the well-known questions of cross-cultural communication and integration. Firstly, I want to discuss Videography and Genre Analysis in the form of an iterative, audiovisual data collection procedure and define the process of sequence selection and interpretation. Secondly, I will demonstrate how communicative structures are analyzed at different levels of Genre Analysis through the minute analysis of a short audiovisual data sequence from a roadshow that took place during a Latin American theme week. As well as detailing the process of gathering information on a situational level, I want to demonstrate the potential of the analysis to gather information about the structural environment on a transsituational level. Through this discussion, I will also outline the importance of additional contextual information that – by means of further ethnographic research – could be uncovered in our fieldwork.
Źródło:
Qualitative Sociology Review; 2012, 8, 2; 130-151
1733-8077
Pojawia się w:
Qualitative Sociology Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analiza ruchu pieszych na podstawie danych z automatycznego systemu rozpoznawania pojazdów i pieszych. Cz. 1, Opis badań i analiza obrazów wideo
Pedestrian traffic analysis based on data from automatic vehicle and pedestrian recognition system
Autorzy:
Szulecki, Artur
Szagała, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/2057818.pdf
Data publikacji:
2021
Wydawca:
Stowarzyszenie Inżynierów i Techników Komunikacji Rzeczpospolitej Polskiej
Tematy:
przejścia dla pieszych
zachowania pieszych
analiza obrazu wideo
pedestrian crossing
pedestrian behavior
video analysis
Opis:
W artykule opisano metody badawcze oraz przedstawiono technologie i narzędzia, za pomocą których starano się zarówno zebrać, przechowywać, przetwarzać, jak i analizować dane dotyczące ruchu na przejściach dla pieszych. Przedstawiono podstawowe charakterystyki ruchu pieszego zebrane na podstawie obrazu z systemu automatycznego rozpoznawania pieszych i pojazdów. Wykonana analiza udowodniła istnienie różnic pomiędzy zachowaniem pieszych przechodzących w grupie i pojedynczo. Jako grupę traktować należy pieszych, którzy przechodzą przez jezdnię w tym samym kierunku przynajmniej w liczbie dwóch osób.
This paper describes the research methods and presents the technologies and tools by which it sought to both collect, store, process and analyze the data concerning traffic at pedestrian crossings. The basic characteristics of pedestrian traffic collected from the automatic pedestrian and vehicle recognition system are presented. The analysis proved the existence of the differences between the behavior of the pedestrians crossing in a group and those crossing separately. A group should be considered to be pedestrians who cross the road in the same direction in the number of at least two people.
Źródło:
Drogownictwo; 2021, 11-12; 295--308
0012-6357
Pojawia się w:
Drogownictwo
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Porównanie przydatności programów „ImageJ ” i ”Carne 2” do szacowania jakości kiełbasy salami metodą komputerowej analizy obrazu ®
Comparison of usefulness of programs „ImageJ” and „Carne 2” application for estimating quality of salami sausages using Video Image Analysis®
Autorzy:
Dasiewicz, K.
Słowiński, M.
Powiązania:
https://bibliotekanauki.pl/articles/228661.pdf
Data publikacji:
2017
Wydawca:
Wyższa Szkoła Menedżerska w Warszawie
Tematy:
komputerowa analiza obrazu
ImageJ
Carne 2
salami
video image analysis
Opis:
Celem pracy przedstawionej w artykule była ocena przydatności dwóch programów komputerowych do szacowania jakości kiełbasy salami metodą komputerowej analizy obrazu. Stosując metody odwoławcze oceniono wyróżniki jakości wybranej handlowej kiełbasy salami, jednocześnie wykorzystując komputerową analizę obrazu określono udział pól białych i czerwonych oraz składowe barwy R, G i B tłuszczu, mięsa i obrazu. Na podstawie wyników stwierdzono, że między wyróżnikami jakości salami oznaczonymi metodami odwoławczymi a danymi pozyskanymi za pomocą komputerowej analizy obrazu występują istotne zależności, co wskazuje na możliwość stosowania tych programów do szacowania jakości tego typu kiełbas. Należy jednak zauważyć, że modele szacowania dla niektórych wyróżników jakości były zróżnicowane w zależności od zastosowanego programu analizującego.
The aim of this article was to evaluate usefulness of two different programs for estimating quality of salami using video image analysis. Quality attributes of salami was determined by using refference methods, simultaneously video image analysis was used to determine share of white and red fields and color components R, G and B for fat, meat and whole image. The results showed that there are significant relationships between quality attributes and obtained data, which indicates usefulness of both programs to estimate quality of this type of sausages. However it should be noted, that estimation models for some of the attributes should be developed separately for each type of program.
Źródło:
Postępy Techniki Przetwórstwa Spożywczego; 2017, 1; 77-81
0867-793X
2719-3691
Pojawia się w:
Postępy Techniki Przetwórstwa Spożywczego
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analyzing Emotional Styles in the Field of Christian Religion and the Relevance of New Types of Visualization
Autorzy:
Herbrik, Regine
Powiązania:
https://bibliotekanauki.pl/articles/2108254.pdf
Data publikacji:
2012-08-30
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
Religion
Religiosity
Emotion
Emotional Culture
Video Analysis
Feeling Rules
Emotional Regime
New Religious Movements
Church Life
Opis:
In the following text the theoretical conception, the employed analysis methods and some first results of the research project “The Emotionalization of Religion” are presented. The aim of the project is to compare newer Christian congregations with a Pentecostal or evangelical orientation to Christian parishes affiliated with the Evangelical Church in Germany or the Roman Catholic Church with regard to their respective emotional culture. The employed method set includes several qualitative methods, such as videoanalysis, the analysis of guideline interviews and participant observation. A particular focus lies within the empirical paragraph on the question: What role do new types of media usage in Christian parishes play for the development, representation and analysis of new emotional styles?
Źródło:
Qualitative Sociology Review; 2012, 8, 2; 112-128
1733-8077
Pojawia się w:
Qualitative Sociology Review
Dostawca treści:
Biblioteka Nauki
Artykuł
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