Search results for "multimedia"
showing 10 items of 692 documents
Noise Robustness Analysis of Point Cloud Descriptors
2013
In this paper, we investigate the effect of noise on 3D point cloud descriptors. Various types of point cloud descriptors have been introduced in the recent years due to advances in computing power, which makes processing point cloud data more feasible. Most of these descriptors describe the orientation difference between pairs of 3D points in the object and represent these differences in a histogram. Earlier studies dealt with the performances of different point cloud descriptors; however, no study has ever discussed the effect of noise on the descriptors performances. This paper presents a comparison of performance for nine different local and global descriptors amidst 10 varying levels o…
Perceptually weighted optical flow for motion-based segmentation in MPEG-4 paradigm
2000
In the MPEG-4 paradigm, the sequence must be described in terms of meaningful objects. This meaningful, high-level representation should emerge from low-level primitives such as optical flow and prediction error which are the basic elements of previous-generation video coders. The accuracy of the high-level models strongly depends on the robustness of the primitives used. It is shown how perceptual weighting in optical flow computation gives rise to better motion estimates which consistently improve motion-based segmentation compared to equivalent unweighted motion estimates.
Integrated multimedia publishing: combining TV and newspaper content on personal channels
1999
Abstract Fast networks enable the delivery of TV and newspaper content over an Internet connection. This enables new types of integrated publications that include features from both media. The IMU system, described in this paper, automatically integrates newspaper and TV content into a continuously updated World Wide Web-multimedia publication. An active proxy server pursues the integration and delivers the publication through an ATM fibre link to fast networks, such as the bi-directional cable TV network and the ADSL telephone network, providing near-TV quality. The users read the IMU publication from the Internet on their PCs with normal World Wide Web-browsers. You can also watch the pub…
Wireless ATM : handover issues
1998
Basic aspects of cellular systems and the ATM transmission technology are introduced. Wireless ATM is presented as a combination of radio ATM and mobile ATM. Radio ATM is a wireless extension of an ATM connection while mobile ATM contains the necessary extensions to ATM to support mobility. Because the current ATM technology does not support mobility, handover becomes one of the most important research issues for wireless ATM. Wireless ATM handover requirements are thus analysed. A handover solution relying on two inter-related handover protocols is presented and evaluated. Future research is needed to compare this solution with options presented by earlier research and possibly combine the…
Aproximaciones en la preparación de contenido de vídeo para la transmisión de vídeo bajo demanda (VOD) con DASH
2023
El consumo de contenido multimedia a través de Internet, especialmente el vídeo, está experimentado un crecimiento constante, convirtiéndose en una actividad cotidiana entre individuos de todo el mundo. En este contexto, en los últimos años se han desarrollado numerosos estudios enfocados en la preparación, distribución y transmisión de contenido multimedia, especialmente en el ámbito del vídeo bajo demanda (VoD). Esta tesis propone diferentes contribuciones en el campo de la codificación de vídeo para VoD que será transmitido usando el estándar Dynamic Adaptive Streaming over HTTP (DASH). El objetivo es encontrar un equilibrio entre el uso eficiente de recursos computacionales y la garantí…
I cavalieri del caos
2004
La catastrofe delle Twin Towers ha inferto un’accelerazione espansiva a quella “teoria della complessità” che, provenendo dalle diverse scienze (Prigogine, Lyotard, Baudrillard, Deleuze, Lacan, etc.) e dalle tecnologie informatiche (McLuhan, Mandelbrot, Thom, Maldonato, etc.) alla fine del secondo millennio aveva già investito le arti e tutte le “pratiche dell’immaginario”. Attorno al crinale atroce dello 11 settembre 2001 e dello “skyline d’occidente” sconvolto, assume nuova emblematicità l’immaginario espanso e conflagrato di architetti “telematici” come Frank Gehry, Daniel Libeskind, i giovani leader della cyber-architecture; di artisti della metamorfosi corporea come Tony Oursler; Orlan…
On-line quizzes to evaluate comprehension and integration skills
2016
[EN] This work demonstrates the use of a 2.0 tool, namely, Socrative, to evaluate one of the cross-curricular competences indicated by the Universitat Politècnica de València, specifically, comprehension and integration. It has been applied to the courses in different areas: sciences, engineering and languages. As part of its implementation, activities were proposed that could be done at the beginning, during or at the end of the class to, on the one hand, help students acquire the knowledge associated with the course(s), and on the other, gather evidence that demonstrates acquisition of said competence. The results show a high level of satisfaction by the students with the use of the Socra…
Service Differentiation for NoC-based Multimedia Applications
2015
International audience; As the communication on-chip evolves toward the global multi-service network, various applications with different service requirements have emerged. A key factor is the support services with a guaranteed quality. The differentiated service with double physical channels is seen as the key technology to achieve this goal. It is focused on the control of traffic and recognizing the need for aspects for the management plan achieved by the bandwidth broker. In this paper, a novel QoS architecture for multimedia application over NoC is proposed. The gains in latency and in resource are possible due to the simplicity of the NoC architecture.
Teatr postdramatyczny - (R)ewolucja?
2016
Mój artykuł jest krótką refleksją nad kondycją współczesnego teatru, który od drugiej połowy XX wieku wkroczył w „epokę eksperymentowania”. Nazywany obecnie teatrem postdramatycznym, powszechnie kojarzonym z porzuceniem tekstu dramatycznego i zwrotem inscenizatorów ku przekazowi multimedialnemu, stanowi naturalną kontynuację i schedę po Wielkiej Reformie Teatralnej, która na początku XX wieku zapoczątkowała zmiany w teatrze europejskim. W konsekwencji przedstawienie teatralne stanowi już nie tylko nagromadzenie wszystkich możliwych sztuk, co wiąże się z prapoczątkami teatru w ogóle. Przede wszystkim oznacza spotkanie technologii w czasie i przestrzeni. Teatr bowiem zmienił się w rodzaj inst…
Using assessment for learning mathematics with mobile tablet based solutions
2014
Published version of an article in the journal: International Journal of Emerging Technologies in Learning (iJET). Also available from the publisher: http://dx.doi.org/10.3991/ijet.v9i2.3219 This article discusses assessment for learning in mathematics subjects. Teachers of large classes face the challenge of regularly assessing students’ ongoing mathematical learning achievements. Taking the complexity of assessment and feedback for learning as a background, we have developed a new approach to the assessment for learning mathematics at university level. We devised mobile tablet technology supported assessment processes, and we carried out user studies in both Rwanda and Norway. Results of …