Now showing items 681-700 of 769

    • Inexpensive Head Tracking for use with Large High-Resolution Displays 

      Simonsson, Carl Erik Joakim (Master thesis; Mastergradsoppgave, 2010-06-01)
      This thesis investigates how head tracking can be implemented by using inexpensive off-the-shelf hardware for a 6 x 3 meter high-resolution display wall. The tracking system has been integrated into to an existing event system, Shout, that allows for inter-program communication. An application called htsim has been developed that is used for testing different head tracking configurations in a ...
    • Automatic Image Tagging based on Context Information 

      Evertsen, Martin Hætta (Master thesis; Mastergradsoppgave, 2010-06)
      People love to take images, but are not so willing to annotate the images af-terwards with relevant tags. Manually tagging images is both subjective (dependent on annotator) and time consuming. It would be nice if the tag-ging process could be done automatically. A requirement for effective searching and retrieval of images in rapid growing online image databases is that each image has accurate and ...
    • Breathing as user interface for pulmonary rehabilitation : respiration tracking using the Wii remote controller 

      Guirao Aguilar, Julian (Master thesis; Mastergradsoppgave, 2010-06-01)
      INTRODUCTION: Respiration exercises are an important part of the pulmonary rehabilitation in COPD (chronic obstructive pulmonary disease) patients. Furthermore, there is evidence that showing feedback about their respiration pattern helps them to improve their breathing skills. This study tests the feasibility of monitoring respiration using the Wiimote's infrared camera and showing BPM (breaths per ...
    • A context-aware mobile bus application 

      Hansen, Christer Andre (Master thesis; Mastergradsoppgave, 2010-05-18)
      Accessing route information should be easy. Today, most collective transport companies distribute timeta- bles online as electronic documents and in paper format. These solutions are outdated and cumbersome to use. However, systems have been built to make the task of finding route information easy, and to replace these formats. Most of these systems, still, have limitations. They rely on users knowing ...
    • NB-FEB : an easy-to-use and scalable universal synchronization primitive for parallel programming 

      Tsigas, Philippas; Ha, Hoai Phuong; Anshus, Otto J. (Research report; Forskningsrapport, 2008-10)
      This paper addresses the problem of universal synchronization primitives that can support scalable thread synchronization for large-scale many-core architectures. The universal synchronization primitives that have been deployed widely in conventional architectures, are the compare-and-swap (CAS) and load-linked/store-conditional (LL/SC) primitives. However, such synchronization primitives are ...
    • Skynet: A distributed, autonomous filesystem 

      Aas, Svein Ove (Master thesis; Mastergradsoppgave, 2010-05)
      Existing networked filesystems are usually either client/server - allowing storage only on one node - hard to use, or both. The advanced ones also like to use their own on-disk format, complicating migration both ways. Skynet attempts to remedy this. It is a distributed filesystem with master/slave redundancy that is easy to use, relatively safe for your data and can be easily converted to/from ...
    • On the design of a generic object adaptor 

      Eliassen, Frank; Hanssen, Øyvind (Conference object; Konferansebidrag, 1995-08)
    • Towards Declarative Characterisation and Negotiation of Bindings 

      Hanssen, Øyvind (Chapter; Bokkapittel, 2005-12)
    • Collecting relevant images context information 

      Jakobsen, Børge (Master thesis; Mastergradsoppgave, 2010-01-08)
      Digital photographing has become more and more popular as cameras and mobile phones get more advanced and have newer technology embedded. Manually searching in these growing image collections is problematic because of missing context information related to the image itself. If related context information could be added as an automated process, it could help the user view and locate images and ...
    • Improving freshness of web-extracted metadata 

      Heimdal, Tord-Arne (Master thesis; Mastergradsoppgave, 2009-12-18)
      Live video search is emerging as a platform for multimedia production and entertainment service. Such systems rely on a stream of live video and metadata describing the video content. A high quality source for such metadata can be found on the web. Identifying and extracting metadata from web pages can be done by crawling and scraping. However, general crawler politeness rules limit per-site ...
    • Designing and evaluating the SCARF (Scalable CAching layered Recommendation and Feedback powered) system for multimedia content providers 

      Grindstein, Torkil (Master thesis; Mastergradsoppgave, 2009-11-15)
      This Master thesis covers the design and evaluation of a multimedia content provider service. The design is scalable, both by means of storage, bandwidth and user count. To make the system stand out compared to competitors, there has been added design elements like a recommendation engine and a user feedback system. The system has been named SCARF, which is an abbreviation for Scalable CAching ...
    • A client for chain replication 

      Arntzen, Ingar Mæhlum (Master thesis; Mastergradsoppgave, 2009-12-02)
      This thesis describes the design and implementation of a proxy client for a chain replicated storage system.
    • Improving the performance of the in-band byte stream file transfer XMPP extension 

      Orlin, Karsten (Master thesis; Mastergradsoppgave, 2009-09-24)
      In looking at the XMPP protocol as an alternative to the ordinary way of transferring files within a health network setting, namely e-mail, performance and security are important factors to consider. For security reasons we preferred to use in-band over out-of-band file transfer. The tradeoff is that this method puts a higher strain on the XMPP server and is significantly slower than its counterpart, ...
    • Inferring image semantics from collection information 

      Thorvaldsen, Idar (Master thesis; Mastergradsoppgave, 2009-02-06)
      There is a continuing desire and need for improving the processes of describing and searching for digital images. While good progress has been made adapting traditional information retrieval techniques to perform these tasks, processing images still presents a number of challenges not encountered when working with just text. This project implements a system allowing for the indexing and searching ...
    • Improving the usefulness of multimedia archives by applying data reduction techniques 

      Aarflot, Tjalve (Master thesis; Mastergradsoppgave, 2009-02-05)
      In recent years, an increasing amount of personal images, video, sound and text data are captured and stored in a digital format. Increased storage capacity at lower cost entice us to attempt to store everything, but without effective information retrieval techniques, the usefulness of the data becomes limited. Some people have taken personal data capture to extremes and have begun to capture ...
    • Efficient intra-node Communication for Chip Multiprocessors 

      Henriksen, Torje Starbo (Master thesis; Mastergradsoppgave, 2008-10-15)
      The microprocessor industry has reached limitations of sequential processing power due to power-efficiency and heat problems. With the integrated-circuit technology moving forward, chip-multithreading has become the trend, increasing parallel processing power. The shift of focus has resulted in the vast majority of supercomputers having chip-multiprocessors. While the high performance computing ...
    • Utilizing ubiquitous commodity graphics hardware for scientific computing 

      Nilsen, Bjørn-Hugo (Master thesis; Mastergradsoppgave, 2007-10-01)
      Current GPUs have many times the memory bandwidth and computing power compared to CPUs. The difference in performance is getting bigger as the evolution speed of the GPUs is higher than of the CPUs. This make it interesting to use the GPU for general purpose computing (GPGPU). I begin by looking at the architecture of the GPU, and some different techniques for programming on a GPU, including ...
    • Super sensor network 

      Fjukstad, Bård (Master thesis; Mastergradsoppgave, 2008-05-15)
      This dissertation studies composing a super sensor network from the combination of three functional sensor networks; A Sensor data producing network, a sensor data computing network and a sensor controlling network. The target devices are today labeled as large sensor nodes. The communication are based on an IP network using HTTP as the main protocol. Bonjour is used for service discovery, with ...
    • Design and implementation of an encourager and motivator application for physical activity based on Bluetooth devices and Argos Middleware Platform 

      Hanssen, Harald Sømnes (Master thesis; Mastergradsoppgave, 2008-01-27)
      Argos is a middleware platform developed at the ArticBeans lab at the University of Tromsø. The purpose of Argos is to provide a personal application platform for custom services. In this thesis we look at how Bluetooth devices along with Argos can be combined to create an application for encouraging and motivating physical activity. Physical activity is steadily decreasing among the population. ...
    • Framework for development of rule based sensor services in the Argos middleware platform 

      Jakobsen, Tom Arild (Master thesis; Mastergradsoppgave, 2008-01-07)
      Argos is a middleware platform developed at the University of Tromsø. It provides tailored, flexible and extensible middleware support. In this thesis we suggest a new approach to creating user services for Argos by using a rule engine to setup the program flow for components in Argos. The users are provided with a graphical tool where they can set up rules that can trigger an action. The input, ...