31 research outputs found
Extrahering av rörelse-vektorer frÄn film- och videodata
Since the Video on Demand market grows at a fast rate in terms of available content and user numbers, the task arises to match personal relevant content to each individual user. This problem is tackled by implementing a recommondation system which finds relevant content by automatically detecting patterns in the individual userâs behaviour. To find such patterns, either collaborative filtering, which evaluates patterns of user groups to draw conclusions about a single userâs preferences, or content based strategies can be applied. Those content strategies analyze the watched movies of the individual user and extract quantifiable information from them. This information can be utilized to find relevant movies with similar features. The focus of this thesis lies on the extraction of motion features from movie and video data. Three feature extraction methods are presented and evaluated which classify camera movement, estimate the motion intensity and detect film transitions.VOD-marknaden (Video pĂ„ begĂ€ran) Ă€r en vĂ€xande marknad, dels i mĂ€ngden tillgĂ€ngligt innehĂ„ll samt till antalet anvĂ€ndare. Det skapar en utmaning att matcha personligt relevant innehĂ„ll för varje enskild anvĂ€ndare. Utmaningen hanteras genom att implementera ett rekommendationssystem som hittar relevant innehĂ„ll genom att automatiskt identifiera mönster i varje anvĂ€ndaren beteende. För att hitta sĂ„dana mönster anvĂ€nds i vanliga fall Collaborative filtering; som utvĂ€rderar mönster utifrĂ„n grupper av flera anvĂ€ndare och kors- rekommenderar produkter mellan dem utan att ta nĂ€mnvĂ€rd hĂ€nsyn till produktens innehĂ„ll. (De som har köpt X har ocksĂ„ köpt Y) Ett alternativ till detta Ă€r att tillĂ€mpa en innehĂ„llsbaserad strategi. InnehĂ„llsbaserade strategier analyserar den faktiska video-datan i de produkter som har konsumerats av en enskild anvĂ€ndare med syfte att dĂ€rifrĂ„n extrahera kvantifierbar information. Denna information kan anvĂ€ndas för att hitta relevanta filmer med liknande videoinnehĂ„ll. Inriktningen för denna avhandling berör utvinning av kamerarörelsevektorer frĂ„n film- och videodata. Tre extraktionsmetoder presenteras och utvĂ€rderas för att klassificera kamerans rörelse, kamerarörelsen intensitet och för att detektera scenbyten.
Exchange-Bias-DĂŒnnschichtsysteme - Charakterisierung, Modellierung und Anwendung
UniversitÀt Kassel Promotionsstipendium und B Braun Melsungen A
Geistercharte von Deutschland.
GEISTERCHARTE VON DEUTSCHLAND.
Geistercharte von Deutschland. ( -
Walking âNormallyâ vs. âSidewaysâ in Simulated, Simple Assembly Operations: Analysis of Muscular Strain in the Legs
The muscular strain of the lower extremities when walking ânormallyâ and âsidewaysâ was analysed using the simple, simulated U-assembly line in the Laboratory of the Institute for Ergonomics and Human Factors in Darmstadt (IAD). Test subjects executed their assembly operations in different scenarios in two studies. The U-line in the first study consisted of three work stations and five
work stations in the second one. Electrical activities (EA) in six leg muscles on each leg (left and right) were measured and analysed by using EMG method. Ten test subjects without experience in assembly work took part in both studies. The results in the first study show that walking âsidewaysâ puts lower extremities
under more stress than walking ânormallyâ does. We were able to record higher electrical activities values (especially dynamic EA-shares) in four out of six analysed leg muscles. EMG-results in the second study show that when âwalking sideways counter-clockwiseâ, three muscles on the right leg are under greater stress than the muscles on the left leg