838 resultados para television cameras


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[ES] In this paper we address the problem of inserting virtual content in a video sequence. The method we propose uses just image information. We perform primitive tracking, camera calibration, real and virtual camera synchronisation and finally rendering to insert the virtual content in the real video sequence. To simplify the calibration step we assume that cameras are mounted on a tripod (which is a common situation in practise). The primitive tracking procedure, which uses lines and circles as primitives, is performed by means of a CART (Classification and Regression Tree). Finally, the virtual and real camera synchronisation and rendering is performed using functions of OpenGL (Open Graphic Library). We have applied the method proposed to sport event scenarios, specifically, soccer matches. In order to illustrate its performance, it has been applied to real HD (High Definition) video sequences. The quality of the proposed method is validated by inserting virtual elements in such HD video sequence.

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[EN]Low cost real-time depth cameras offer new sensors for a wide field of applications apart from the gaming world. Other active research scenarios as for example surveillance, can take ad- vantage of the capabilities offered by this kind of sensors that integrate depth and visual information. In this paper, we present a system that operates in a novel application context for these devices, in troublesome scenarios where illumination conditions can suffer sudden changes. We focus on the people counting problem with re-identification and trajectory analysis.

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Il seguente elaborato analizza l'importanza di un'adeguata rappresentazione di personaggi appartenenti allo spettro LGBT all'interno di programmi televisivi nordamericani, in particolare Orange Is The New Black e Orphan Black. Lo scopo della tesi è quello di provare l'importanza della rappresentazione nella costruzione dell'identità personale di ognuno, e nella lotta contro le discriminazioni di genere e orientamento sessuale. Le tesi si apre con un excursus teorico sul termine e il concetto di rappresentazione, soprattutto relativo all'ambito della televisione. Successivamente, vengono analizzati i vari tipi di rappresentazione all'interno nei due programmi televisivi presi in esame. La ricerca si conclude con una valutazione degli effetti e delle reazioni del pubblico a entrambi i telefilm e, infine, con alcune considerazioni personali.

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This dissertation has two main purposes. On the one hand, it aims at comparing the gender stereotypes presented in the television commercials in China and in Europe. Considering the cultural, historical and socio-economical differences between these two contexts, it is interesting to examine the gender role models offered and used by the advertising industry in European Union and China in order to see if the gender stereotypes are similar and to evaluate to which extent they reflect, challenge or reinforce the gender roles of the society where they are broadcasted. On the other hand, the objective of this dissertation is to establish the degree of adequateness and effectiveness of the existing regulatory framework through an analysis of the positive and negative aspects of the regulatory acts issued to safeguard a fair representation of genders in the EU Member States and in China.

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The main problem addressed by this research was that of what are the relations between TV viewing at home and studying literature at school, and how an adequate position on this can be reached. As well as the theoretical background, it involved an experimental study with classes of second and sixth grade students, discussing and observing their reactions to and interpretations of a number of animated cartoons. The work is divided into four parts - Is there a Class in this Text?, Stories of Reading, Narratives of Animation and Animation of Narratives, and The (Three) Unrepeatable (Pigs). Beginning, Middle End - which examine the tensions between the "undiscriminating sequence" of the televisual flow and a way of "thinking", "making" and "doing" education that presupposes a fundamental belief in possible re-productions, copies unescaping, following the original, or competing. The work focuses on animated cartoons, seeing them not merely as a part of the flow of television, but as an allegory of reading this flow, of the flow within the flow itself. What they question - "identity", "end", "followability" - is what is most important to teaching. Thus the interest in the metamorphoses of animated films is an interest in the tensions which their "strange law/flow" introduces into the field of teaching - this totally forbidden place of saying everything.

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An Internet survey demonstrated the existence of problems related to intraoperative tracking camera set-up and alignment. It is hypothesized that these problems are a result of the limited field of view of today's optoelectronic camera systems, which is usually insufficiently large to keep the entire site of surgical action in view during an intervention. A method is proposed to augment a camera's field of view by actively controlling camera orientation, enabling it to track instruments as they are used intraoperatively. In an experimental study, an increase of almost 300% was found in the effective volume in which instruments could be tracked.

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A practical use of personal digital cameras for taking digital photographs in the microsurgical field through an operating microscope is described. This inexpensive and practical method for acquiring microscopic images at the desired magnification combines the advantages of the digital camera and the operating microscope.

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Television is widely used for educational purposes but has still not achieved its fullest potential neither in developed nor in developing countries. This worldwide under performance invite experts and academics to join hands to search causes and provide suggestions to make television a better and popular learning tool. Guided by this philosophy, the present paper analyzes the educational television broadcasting in Germany from different perspectives. The focus of analysis includes measures and practices adopted by German institutions/broadcasters to promote educational television. Besides dealing with these issues, the paper discusses existing challenges and suggests best adoptable educational television broadcasting polices from Germany to promote educational television in global perspectives.

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There is emerging evidence for a link between sedentary behavior and mental health, although the mechanisms remain unknown. We tested if an underlying inflammatory process explains the association between sedentary behavior and depressive symptoms. We conducted a two year follow-up of 4964 (aged 64.5 ± 8.9 years) men and women from the English Longitudinal Study of Ageing, a cohort of community dwelling older adults. Self-reported TV viewing time was assessed at baseline as a marker of leisure time sedentary behavior. The eight-item Centre of Epidemiological Studies Depression (CES-D) scale was administered to measure depressive symptoms at follow-up. At baseline, TV time was associated with C-reactive protein (CRP), adjusted geometric mean CRP values were 2.94 mg/L (<2 h/d TV); 3.04 mg/L (2–4 h/d TV); 3.29 mg/L (4–6 h/d TV); 3.23 mg/L (>6 h/d TV). We observed both a direct association of TV time on CES-D score at follow-up (B = 0.08, 95% CI, 0.05, 0.10) and indirect effects (B = 0.07, 95% CI, 0.05, 0.08). The indirect effects were largely explained through lack of physical activity, smoking, and alcohol, but not by CRP or body mass index.