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540 Uppsatser om Video coding - Sida 1 av 36

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.

Implementering av realtidsvideolänk med MPEG- och wavelet-teknik

At Saab Aerosystems, situated in Linköping Sweden, there is a presentation and manoeuvre simulator simulating the fighter jet JAS-39 Gripen. This flight simulator is called PMSIM. In this thesis we study how to transfer sensor images generated by PMSIM to other simulators or desktop computers. The transmission is band-limited so some kind of image coding must be used. Because of this the greater part of this thesis is concerned with image coding.

Vektorkvantisering för kodning och brusreducering

This thesis explores the possibilities of avoiding the issues generally associated with compression of noisy imagery, through the usage of vector quantization. By utilizing the learning aspects of vector quantization, image processing operations such as noise reduction could be implemented in a straightforward way. Several techniques are presented and evaluated. A direct comparison shows that for noisy imagery, vector quantization, in spite of it's simplicity, has clear advantages over MPEG-4 encoding..

Link QualityControl (LQC) i GPRS/EGPRS

This master thesis has been done at Enea Epact AB. The purpose of this thesis is to develop and implement a Link Quality Control algorithm for GPRS/EPGRS in the current testing tool. A Link Quality Control (LQC) shall take quality values from mobile stations and base stations and decide a codingsscheme that opimizes the throughput of data. The Advantage with LQC is that it adapts the used coding scheme to the channel quality. If the channel quality is too bad for the used coding scheme, a slower coding scheme with more redundancy should be selected.

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.

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..

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. .

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.

Identifiering av designriktlinjer lämpade för integrerade videouppladdningstjänster

There is a lack of published material regarding designing graphical user interfaces of so called integrated video uploading services. The term integrated video uploading services refers to homepages that do not have video uploading as its primary purpose but which still offers that service to its visitors. The aim of this thesis was to improve the amount of published material about designing graphical user interfaces for integrated video uploading services. This was done by performing a literature study to find general design guidelines which can be applied to design of integrated video uploading services. Thereafter the functionality and design of dedicated video uploading services was analyzed.

En studie av Karlstads universitets studenters användning av video-centric webbplatser

Undersökningens avsikt är att granska video-centric webbplatsers användning bland Karlstads universitets studenter, varför och hur studenter använder webbplatserna. Undersökningen är baserad på Uses and Gratifications modellen..

Comparison of two methods for evolving recurrent artificial neural networks for

n this dissertation a comparison of two evolutionary methods for evolving ANNs for robot control is made. The methods compared are SANE with enforced sub-population and delta-coding, and marker-based encoding. In an attempt to speed up evolution, marker-based encoding is extended with delta-coding. The task selected for comparison is the hunter-prey task. This task requires the robot controller to posess some form of memory as the prey can move out of sensor range.

Att spela ett yrke : En kvantitativ studie om svenska speljournalister och deras professionalisering

This work aims to improve our knowledge about Swedish video game journalists, a new occupation in a quickly expanding business. Through a survey sent out to over 50 Swedish video game journalists, the result indicate some unexpected facts. Men largely dominate the profession; just 10 % of the work forces are females. This relation was notable in our survey, as well as in earlier studies. Video game journalists between 26 and 35 years old seems to be the largest age group, which we think is a bit surprising considering how new this form of journalism is, and the fact the internet provides opportunities for every enthusiastic video game writer.

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