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513 Uppsatser om Video compression - Sida 1 av 35

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..

Digital videoregistrering

This Bachelor thesis examines the possibility of replacing an outdated, analog video recording system to a digital counterpart. It is key that the video and audio signals remain synchronized, generator locked and time stamped. It is up to nine different video sources and a number of audio sources to be recorded and treated in such a manner which enables synchronized playback. The  different video sources do not always follow a universal standard, and differ from format as well as resolution. This thesis aims to compare a number of state of the art commercial of the shelf solutions with proprietary hardware.

Blogg i förskolan : Hur förskollärare anser att en blogg kan användas för att dokumentera veksamheten och främja föräldrasamverkan

This Bachelor thesis examines the possibility of replacing an outdated, analog video recording system to a digital counterpart. It is key that the video and audio signals remain synchronized, generator locked and time stamped. It is up to nine different video sources and a number of audio sources to be recorded and treated in such a manner which enables synchronized playback. The  different video sources do not always follow a universal standard, and differ from format as well as resolution. This thesis aims to compare a number of state of the art commercial of the shelf solutions with proprietary hardware.

Utveckling av 22 : -en motkolvs HCCI motor

Environment friendly transports are one of the main topics in the industry and society today.Shell organizes an annual university competition called Shell Eco Marathon. The goal is to buildthe car that consumes the least fuel during a race. KTH participated for the first time in 2006.The engine for this competition, DoubleTwo, has been developed within the school. Theprinciple is a two stroke counter piston HCCI engine with variable compression ratio. HCCIstands for homogenous charge compression ignition.

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.

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. .

Jämförande tidsstudie vid riskörning med kompakteringsskotare och traditionell ?lätt? modifierad skotare :

This report is a thesis work for a B.Sc. in Forestry exam at the School for Forest Engineers, SLU. The work was an assignment from Sydved Energy AB. The aim of the work was to compare the operational productivity between two kinds of forwarders for extraction of harvesting residues, one forwarder with a special compression device and one ordinary, slightly modified forwarder. Two sites were studied for each forwarder. The study shows that the annual production was about 11,000 m3 higher for the traditional forwarder. The cost for the traditional forwarder was SEK 0.9 lower per m3.

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.

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.

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.

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