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3788 Uppsatser om Distributed Video Systems - Sida 1 av 253
Hantering av QoS i Distribuerade MPEG-videosystem
With the advance in computer and network technologies, multimedia systems and Internet applications are becoming more popular. As broadband network is prevailing, more clients are able to watch streaming videos or to play multimedia data over the Internet in real-time. Consequently, there is an increasing demand in the Internet for streaming video systems. As the run-time environment of such applications tends to be dynamic, it is imperative to handle transient overloads effectively. The goal of this work is to develop an algorithm that would provide a robust and controlled behavior of the video system so that important data is delivered on time to the video clients.
Trådlös kamerastyrning
As an amateur it can be difficult filming from several angles at the same time as this requires several cameras. It´s also hard to film at occasions when it´s not appropriate to manoeuvre the camera manually. Systems for solving these problems already exist, but it´s either more expensive, professionalsystems or cheaper systems with limited functionality.The purpose of this project is to develop a cost efficient solution to the problem above that offers a better functionality then existing commercial systems. The biggest difference from existing products is the wireless video feedback from the camera to the remote unit.The result of the project is a system consisting of two units, a manoeuvre unit with a cradle for the video camera and a remote unit from which the operator can control pan and tilt of the video camera.Communication between the two units is wireless.On the remote unit there is a joystick and a display mounted. In addition to this, there is also an IR receiver that is capable of reading the signal from the cameras own remote and sending it to the manoeuvre unit.The manoeuvre unit is equipped with one motor to control the tilt function and one motor to control the pan.
Gaming och informationsanvändning : En informationsvetenskaplig studie av tv-spel och gamers
The purpose of this bachelor?s thesis is to examine video games, gamers and gaming from an information science perspective. The purpose of the study is partly to study video games as a type of information system and partly to study gamers information use, information seeking and also the experience of gaming. A selection of five games have been analysed using a topology for video game analysis created by Espen Aarseth. A quantitative investigation has also been made, in the form of a web survey distributed through four Swedish online forums, the result of which was analysed using Carol Collier Kuhlthaus model of the information seeking process.
Digital videoväxel
This thesis discusses the possibilities to distribute digital video in a military vehicle. Today, an analogue system is used, which has a maximum capacity of eighteen video sources and the same number of monitors. The purpose of this thesis is to increase the systems capabilities regarding secure distribution and additional functions. Both software and hardware tests are made to investigate the features of the digital video standard MPEG-2. Both the coding delay and the image quality are of great interest.
Twelvestep : Down inside
Title: Music video: Twelvestep ? DownInside Made by: Benjamin Bondesson Christian Edgren Tutor: Silvio Ocasic Course admin: Peter Ekdahl Purpose: To create a music video that we can stand, that challenges us in the creative process. And to help a struggling band with another medium to spread their music. Goal:We intend to create a great product that is demanding and educational to us. Especially when it comes to cooperation and editing/post production.
Säkra kommunikationskanaler i en distribuerad heterogen miljö
The systems environments of today are often distributed and heterogeneous. These kind of systems have several advantages but also disadvantages. One problem is how to keep them secure.The security problems in these environments are mainly due to the communication between the connected computers. It is relatively easy to tap these communication channels from information. There is also a need for the possibility to secure these channels from modification of sent information and to be able to verify the sender and receiver of information in a secure manner.
Twelvestep - Down inside
Title: Music video: Twelvestep ? DownInside
Made by: Benjamin Bondesson
Christian Edgren
Tutor: Silvio Ocasic
Course admin: Peter Ekdahl
Purpose: To create a music video that we can stand, that challenges us in the
creative process. And to help a struggling band with another medium to spread
their music.
Goal:We intend to create a great product that is demanding and educational to
us. Especially when it comes to cooperation and editing/post production.
Keywords:Music video, digital video, film.
Sökmotoroptimering för video : Tekniker och skillnader
Undersökningen vill visa om vald sökmotoroptimering påverkar en webbsidas SERP- placering1 för sidor med video. I arbetet undersöks bland annat video-sitemap och schema.orgs uppmärkning för video.En empirisk undersökning har utförts med tre testdomäner där olika sökmotoroptimeringstekniker implementerats på de olika webbsidorna. En webbsida sökmotoroptimerad för video, en sida med sökmotoroptimering för textinnehåll och en sida sökmotoroptimerad med båda teknikerna. På sidorna har kontinuerligt videor laddats upp och sidornas SERP-placering i sökmotorn Google noterats på en förbestämd sökterm.Resultatet visar att schema.orgs uppmärkning för video och video-sitemap har en viss positiv effekt vad gäller sökmotoroptimering..
Data Propagation and Self-Configuring Directory Services in a Distributed Environment
The Swedish field of digital X-ray imaging has since several years relied heavily on distributed information systems and digital storage containers. To ensure accurate and safe radiological reporting, Swedish software-firm eCare AB delivers a system called Feedback?the first and only quality assurance IT support product of its kind. This thesis covers several aspects of the design and implementation of future versions of this software platform. The focus lies on distributed directory services and models for secure and robust data propagation in TCP/IP networks.
Det virtuella kontoret : En litteraturstudie i möjligheter och utmaningar med att använda 3D kollaborativa virtuella miljöer inom distribuerad systemutveckling
Distributed system development is a common occurrence in today?s technological and global world. Because the consequences of its geographically distributed nature it creates barriers between people that affects their communication and collaboration efforts in the distributed context. Despite a lot of technological breakthroughs over the last decades and the occurrence of video-conference applications and other tools for communication and collaboration, cultural and geographical issues have so far not yet been completely resolved. In this study I have made a literature study over distributed system development to form a set of central factors that affects the distributed development process.
Synkroniserad videouppspelning över Internet
The goal with this project was to achieve real-time synchronized video playback over the Internet, or in other words, that multiple clients play the same part of a video at the same time.The result shows how it is possible to build such a protocol, that gives a user experience that the video is synchronized between computers when playing a locally stored file, stream or video delivered using progressive download. This was achieved by designing, then role playing to find weaknesses, and at last implementing the protocols to see how they work in practice. By using such a protocol, it is possible to navigate and discuss around a video in for example a telephone conference, and be sure that everybody is looking on the same picture..
Sagan om Rödluvan och variabeln : En titt på film i matematikundervisningen
Undersökningens syfte är att studera video som inslag på matematiklektioner genom att titta på elevers kunskapsutveckling, åsikter och lärares åsikter.En video om Pythagoras sats har producerats och visats i klassrummet och det har sedan gjorts diagnostiska prov i experiment- och en kontrollgrupper. Det har även gjorts en elevenkät och lärarintervju. Resultatet visade att eleverna var ganska positiva till video men att filmen inte hjälpte något märkbart. Lärarna ansåg det vara svårt att få in video i matematiken eftersom det går så fort. Slutsatsen är att video kan användas som tillsats till undervisningen ibland, men inte som ensam ersättning till annan undervisning..
Strömmande video i trådlösa mesh nätverk : Streaming video in wireless mesh networks
This document?s content is the final report of the master´s dissertation Magnus Hällström did during springtime of year 2013. The dissertation?s subject is 802.11s wireless mesh networks with streaming video as a focus point. During the dissertation a wireless mesh network was set up with different attached cameras for streaming video. A sun panel solution was also tested with the goal of creating a package with a self-configuring network node streaming video, powered by nothing but solar energy. .
Den trådlösa massan - svärmbeteende och kollektiv handling
This essay seeks to analyze the consequences of modern information and communication technology for collective action within the framework of social movements. With references to the protests in Seattle 1999, the essay argues that the emergence of distributed collective action is closely related to the use of technology, for example cell phones and Internet. This distributed collective action can be characterized by its decentralized and self-organizing features, forming a global pattern emerging from local interactions. Whereas contemporary theories of collective action can be ´stretched´ to fit these aspects, they lack analytical tools to describe and analyze such systems. Further, their rejection of classical crowd theory is problematic, since it contains valuable insights.
Direktuppspelande video från Umeå kommuns webbplats : En undersökning om Umeå kommuns förutsättningar att sända direktuppspelande video över Internet från en mobil studio
Användningen av strömmande media ökar explosionsartat och är nära knu- tet till utbyggnaden av bredband. Intresset för direktuppspelande video bland kommuner, stat och landsting har ökat på senare år. I dag sänder bl.a. Region Skåne, Uddevalla-, Sigtuna- och Bollnäs kommun direktupp- spelande video från sina kommunfullmäktige.Den här rapporten handlar om Umeå kommuns förutsättningar att sända direktuppspelande video från sin webbplats. Min uppgift blev att undersöka vilka krav kan ställas på en myndighet som sänder video både när det gäller teknik och tillgänglighet.En fördjupning om multicasting görs, då det är en teknik för att drastiskt minska behovet av bandbredd för direktsänd video.