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  • 1.
    Aasheim, Fanny
    et al.
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, The Institute of Technology.
    Gestsson, Linnea
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, The Institute of Technology.
    Det spelar ingen roll hur du gör det - bara du gör det: Hur ett koncept kan utformas för att uppmana till motion utan att bidra till hälsohets2020Independent thesis Basic level (degree of Bachelor), 10,5 credits / 16 HE creditsStudent thesis
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  • 2.
    Abrandt Dahlgren, Madeleine
    et al.
    Linköping University, Department of Medical and Health Sciences, Division of Community Medicine. Linköping University, Faculty of Medicine and Health Sciences.
    Nordenström, Elin
    University of Gothenburg, Gothenburg, Sweden.
    Rooney, Donna
    University of TechnologySydneyAustralia.
    Rystedt, Hans
    University of Gothenburg, Gothenburg, Sweden.
    Video as a Tool for Researching Simulation Practices2019In: Video as a Tool for Researching Simulation Practices: Materiality, Embodiment, Interaction / [ed] Madeleine Abrandt Dahlgren, Hans Rystedt, Li Felländer-Tsai and Sofia Nyström, Cham: Springer Publishing Company, 2019, p. 31-55Chapter in book (Refereed)
    Abstract [en]

    This chapter provides examples of how arrangements for collection and analyses of video data were organized across different sites. The common approach to data collection builds on established methods for recording of audiovisual materials in the social sciences with a focus on interaction and learning. The chapter describes how arrangements for data collection across different sites were organised, and how video analysis can be used as a method for collaborative analysis of practices. One approach is entitled purposeful approach to collaborative data analysis. A second approach draws on video-based studies of situated action, and a third approach of analysis is the use of qualitatively different readings of the same data. One does not replace the other, but rather draws out different features.

  • 3.
    Adamsson, Christian
    et al.
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, The Institute of Technology.
    Ho, Emilie
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, The Institute of Technology.
    Interactive 3D-visualization of a Solar Particle Event for Public Outreach2020Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    This report presents the work of our Master´s thesis carried out remotely at the Community Coordinated Modeling Center at the National Aeronautics and Space Administration (NASA) Goddard Space Flight Center. In collaboration with the American Museum of Natural History (AMNH), Linköping University and Predictive Science Inc. The report presents and evaluates an implementation of an interactive 3D visualization of a Solar Particle Event in OpenSpace, an open source astrovisualization software. Data from a model developed by Predictive Science Inc. was used to implement the visualization. The visualization is done by visualizing fluxes of particles as points and utilizing a volumetric data set by applying 2D textures to geometrical shapes. The goal of these visualizations is to help describe the effect of space weather phenomena to the general public. The research conducted is focused on how to visualize a big Solar Particle Event to emphasize or showcase different aspects, such as the radiation exposure close to Earth. The result of the work is an interactive real-time visualization of a Solar Particle Event designed for public outreach. The project culminated in two live streamed events with AMNH, in collaboration with NASA and Predictive Science Inc. 

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  • 4.
    Ahlqvist, Erica
    Linköping University, Department of Computer and Information Science.
    Implementation And Evaluation of Gamification Elements In An E-learning Platform For Engineering Education2021Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    E-learning and online courses are widely used today, with different platforms being available for the user. When implementing and evaluating such a platform relevant research is required, therefore a pre-study was conducted. The pre-study showed that the platforms used at Linköpings University have a variety of available platform of which the teachers can use, however, some of there lack the features and it is therefore common for teachers to use more than one platform for a course. The goal of the thesis has been to answer the research question and to do so a platform was implemented, with focus on the gamification elements. The thesis answered the research question through the implementation of the platform and the user test. The user test was held on the target audience. The participants of the user test were faced with a short course on the developed platform. The test results show that the combination of gamification elements used motivated the participants towards the presented course and the assignments within it. During the user test a questionnaire, based on Intrinsic Motivation Inventory, was used. The result from this showed that the platform and its gamification elements increased the enjoyment, interest, perceived competence and effort towards the course.

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  • 5.
    Akram Hassan, Kahin
    et al.
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, Faculty of Science & Engineering.
    Rönnberg, Niklas
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, Faculty of Science & Engineering.
    Forsell, Camilla
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, Faculty of Science & Engineering.
    Johansson, Jimmy
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, Faculty of Science & Engineering. Linköping University, Centre for Climate Science and Policy Research, CSPR.
    On the Performance of Stereoscopic Versus Monoscopic 3D Parallel Coordinates2016Conference paper (Refereed)
    Abstract [en]

    This work presents the results from an evaluation of stereoscopic versus monoscopic 3D parallel coordinates. The objective of the evaluation was to investigate if stereopsis increases user performance. The results show that stereoscopy has no effect at all on user performance compared to monoscopy. This result is important when it comes to the potential use of stereopsis within the information visualization community.

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  • 6.
    Aldén, Fanny
    et al.
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, Faculty of Science & Engineering.
    Juopperi, Emil
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, Faculty of Science & Engineering.
    UX-verktyg för prototyputveckling med AI-baserat automationsstöd för omvandling av skisser till gränssnittskomponenter2018Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Att skapa prototyper för att testa idéer är vanligt, oavsett vad det är som ska testas. Prototyper kan förekomma i oändligt olika former och vara mer eller mindre verklighetstrogna. Hur verklighetstrogen en prototyp är beror på vad som ska testas och hur mycket tid som läggs på prototypskapandet. I teknikbranschen är prototyperna vanligen digitala och skapas med prototypprogram. Eftersom tid är pengar så försöker företag effektivisera prototyprocessen genom att utforska nya tekniker, som exempelvis artificiell intelligens. Syftet med examensarbetet som beskrivs i den här rapporten är att undersöka hur ett prototypverktyg med automation bör utformas samt vilka eventuella användningsområde verktyget har. Under examensarbetet genomfördes intervjuer med anställda på konsultföretaget Exsitec. Syftet med intervjuerna var att ta reda på hur Exsitec arbetar med prototyper i uppstarten av sina projekt. Med hjälp av informationen identifierades svårigheter i arbetsprocessen. Utifrån den informationen utvecklades prototypverktyget ProtoDraw. Verktyget är utrustat med artificiell intelligens, som känner igen skisser och ger utifrån dem rekommendationer på webbkomponenter. Prototypverktyget utvecklades, tränades och testades som en del av fallstudien. Målet med fallstudien var att testa användares förtroende för verktyget samt hur förtroendet berodde på verktygets automationsnivå. Prototypverktyget utrustades med tre automationsnivåer interaktionsmodell A, interaktionsmodell B och interaktionsmodell C. Interaktionsmodell A gav alla förslag till användaren och rekommenderade de mest lika komponenterna genom att rama in dem. I interaktionsmodell B fick användaren endast de tre bästa resultaten. I interaktionsmodell C fick användaren endast ett förslag från automationen. Totalt genomfördes 15 användartester, fem stycken på varje nivå. Resultatet från användartesterna visade att interaktionsmodell B hade högst och stadigast förtroende. Interaktionsmodell B var även nivån som användarna ansåg var mest användbar. Trots detta var A nivån som användarna utförde uppgifterna i användartesterna på kortast tid. C hade den långsammaste tiden och det berodde på att den höga automationsnivån bidrog till att gränssnittet blev känsligt för fel.

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    UX-verktyg för prototyputveckling med AI-baserat automationsstöd för omvandling av skisser till gränssnittskomponenter
  • 7.
    Algotsson, Emma
    Linköping University, Department of Computer and Information Science, Software and Systems.
    Design and Evaluation of an E-learning Platform to support Active Learning2021Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Engineering students at Linköping University are given the opportunity to improve their soft skills through the course Professionalism for Engineers. Soft skills are becoming more and more important in succeeding professionally as well as personally, especially among engineering students, who are more used to improving their hard skills. The course presents the students with a mixture of in-class and out-of-class activities, in which the latter makes use of three different platforms to provide the students with necessary information regarding the course. 

    This study has focused on combining the three platforms by creating a new E-learning platform, where further improvements and additions have been added to create a more supporting environment, in which the out-of-class activities are at the centre. The platform was evaluated through qualitative user tests and the quantitative User Experience Questionnaire, in which four students, enrolled in the course Professionalism for Engineers, participated. Every category in the User Experience Questionnaire received a positive value, implying that the users were overall pleased with the platform and experienced it as being intuitive, efficient and motivating. 

    The proposed platform, with the added functions and design elements, has the potential to support the students in doing their out-of-class activities, and the circumstances whilst doing these activities has been changed to enhance the students' active learning experience. 

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  • 8.
    Alm, Fei
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, Faculty of Science & Engineering.
    Brushing and Linking Primitive Evaluation of Hierarchical Data in Linked Visualizations2023Independent thesis Advanced level (degree of Master (One Year)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    The projects research focused on exploring techniques for visualizing and interacting with hierarchical data. It evaluated what are the most common practices for the exploration of hierarchical data and how it can further be designed using brushing and linking. The project was carried out at the Scientific Visualization unit at Linköping University. The work conducted a literature study and an evaluation using user tests. The evaluation is a pilot study where the visualizations, brushing techniques, dataset size, and conduction of the user test are based on a literature study. The study identified node-link diagrams, treemaps, and icicle plots as the most commonly used generic visualization techniques for exploring hierarchical data in research. Along with those visualizations, three brushing approaches linking different nodes to each other (based on different kinds of kinship) were applied in several combinations in prototypes, shown and used in the user tests. The results showed that coordinated multiple views with brushing and linking were frequently employed, allowing users to manipulate and interact with data on one screen while seeing relevant views updated. The study showed that treemaps are often struggling to visualize beyond leaf nodes and node-link diagrams become cluttered. The user study indicated that D-brushing (data brushed in descending directions) was preferred, and certain brushing methods were suitable depending on the task. Since the research is a pilot study, it is recommended to perform additional studies such as further designing brushing to provide a guideline for user freedom in highlighting relationships, and in linked views. Some design suggestions that are worth studying and testing in further work are, for example, using color maps to show the hierarchical attributes and relationships between nodes while brushing, re-layouts of text labels, and ordering nodes alphabetically

  • 9.
    Almer, Lili
    et al.
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, Faculty of Science & Engineering.
    Bodin, Jennifer
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, Faculty of Science & Engineering.
    Objektifiering av kvinnor på sociala medier - Var går gränsen?: En studie om unga mäns förhållningssätt till kvinnoobjektifierande bilder på sociala medier2021Independent thesis Basic level (degree of Bachelor), 10,5 credits / 16 HE creditsStudent thesis
    Abstract [sv]

    Sociala medier är ett fenomen som växer världen över och är något som de flesta unga använder dagligen. Genom att använda olika plattformar dagligen medföljer positiva och negativa konsekvenser, bland annat att påverkas av det man exponeras för på olika sätt. Kvinnoobjektifiering på sociala medier är ett ämne som uppmärksammats mer på senare år och kan anses vara problematiskt, men det är svårt att säga var gränsen går för vad som är acceptabelt. Denna studie syftar därför till att undersöka hur unga män förhåller sig till kvinnoobjektifiering på sociala medier, vad de anser vara acceptabelt och inte, samt hur de kan påverkas av materialet. Forskningsfrågorna har besvarats med hjälp av intervjuer, teorier inom bildanalys, tematisk analys och stöd i form av litteratur som använts för att analysera materialet. Studien har en kvalitativ ansats och undersökningen är genomförd med sex semistrukturerade intervjuer med unga män i åldrarna 20-25 år. En enkät som inledande studie har legat till grund för arbetet och haft inflytande på studiens syfte samt intervjuerna. En tematisk analys av kvalitativa intervjuer påvisar unga mäns syn på kvinnoobjektifierande material i sociala medier och hur de förhåller sig till det: unga män anser det vara nedvärderande och förminskande men finner ett dilemma i censurering av materialet. Vissa tror att censur på sociala medier är en bra lösning, när andra tvivlar på att det skulle lösa problemet och istället inskränka på yttrandefriheten. Analys av litteratur påvisar att kvinnoobjektifiering på sociala medier kan påverka unga män på olika sätt. Ett av dessa sätt är att de kan få en sämre kvinnosyn och normalisera ett kvinnoobjektifierande beteende, vilket kan leda till negativa konsekvenser för både kvinnor och män. Slutsatsen är att negativa konsekvenser förekommer av materialet och att censur skulle kunna motverka dem - om sociala medier är villiga att prioritera det.

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  • 10.
    Almlöf, Mattias
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, The Institute of Technology.
    Stockidentifiering och estimering av diameterfördelning med djupinlärning2020Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [sv]

    Mabema har en produkt som mäter vedvolym av virkestravar på lastbilar. Systemet är byggt på att en bildbehandlingsalgoritm hittar silhuetterna av stockarna på renderade bilder av lastbilstravar. Arbetsgivaren är inte helt nöjd med prestandan av algoritmen och vill utreda om djupinlärning kan förbättra resultatet. Detta arbete undersöker hur diameterfördelningen i varje trave kan estimeras med hjälp av djupinlärning och objektdetektering i synnerhet. Två metoder granskas, den ena hanterar problemet abstrakt med djup regression medan den andra metoden går in i detalj och nyttjar objektigenkänning för att hitta stockändar. Arbetet utvärderar även möjliheterna att träna dessa modeller baserat på data från fysiska simulationer. Det visar sig vara användbart att nyttja syntetisk data för träning och med transfer learning lyckas de syntetiska modellen uppnå kraven Biometria ställer på automatiserad diameterberäkning. Med objektdetektering visar det sig också gå att uppnå samma prestanda som arbetsgivarens algoritm med en bättre stocksökning tre gånger så snabbt eller snabbare.

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  • 11.
    Almqvist, Ellen
    et al.
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, Faculty of Science & Engineering.
    Ekbladh, Mathilda
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, Faculty of Science & Engineering.
    Hur en flergångskasse kan utformas för att stimulera till köp och användning2022Independent thesis Basic level (degree of Bachelor), 10,5 credits / 16 HE creditsStudent thesis
    Abstract [en]

    The manufacture and consumption of plastic is one of the world's biggest environmental culprits. In 2020, the Swedish government introduced an increased tax on plastic carrier bags to reduce the use of plastic. The increase has resulted in a higher price for plastic carrier bags, which motivates the consumer to use reusable bags instead. The purpose of this study was thus to investigate, from a sustainable perspective, how a reusable bag can be designed to increase purchase intention; the desire to buy a reusable bag, as well as increase use; that the reusable bag is used for several purposes and many times.In order to, through design, produce an optimal reusable bag, both product design and graphic design were examined. In the initial study, the target group's behavior around the use of reusable bags was examined. The initial study laid a foundation for how the bag would be designed and therefore goals were formulated based on the initial study's results and analysis. The goals have served as a starting point for concept generation and evaluation of the design. The design alternatives were evaluated partly through user testing of three prototypes of the bag’s function and product design, and partly through a survey where three graphic design concepts were presented. From the evaluation, the study received answers on how a reusable bag is designed to stimulate use and purchase.After evaluating the various design options for both product design and graphic design, a final design could be determined. The result for the product design was a bag in a square shape with a rectangular bottom, in organic cotton with a larger water resistant inner pocket and an outer pocket for a water bottle, for example. To appeal to the target group with the bag's graphic design, childhood characters were used as a tool, and the final design landed in an image of the literary figure Babar.

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  • 12.
    Al-Sader, Mohamed
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, Faculty of Science & Engineering.
    Gaze-driven interaction in video games2018Independent thesis Advanced level (degree of Master (One Year)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    The introduction of input devices with natural user interfaces in gaming hardware has changed the way we interact with games. Hardware with motion-sensing and gesture recognizing capabilities remove the constraint of interacting with games through typical traditional devices like mouse-keyboard and gamepads. This changes the way we approach games and how the game communicates back to us as the player opening new levels of interactivity. This thesis covers how eye tracker technology can be used to affect rendering effects in games.

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    Gaze-driven interaction in video games
  • 13.
    Alsegård, Adam
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, Faculty of Science & Engineering.
    Interactive out-of-core rendering and filtering of one billion stars measured by the ESA Gaia mission2018Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    The purpose of this thesis was to visualize the 1.7 billion stars released by the European Space Agency, as the second data release (DR2) of their Gaia mission, in the open source software OpenSpace with interactive framerates and also to be able to filter the data in real-time. An additional implementation goal was to streamline the data pipeline so that astronomers could use OpenSpace as a visualization tool in their research.

    An out-of-core rendering technique has been implemented where the data is streamed from disk during runtime. To be able to stream the data it first has to be read, sorted into an octree structure and then stored as binary files in a preprocess. The results of this report show that the entire DR2 dataset can be read from multiple files in a folder and stored as binary values in about seven hours. This step determines what values the user will be able to filter by and only has to be done once for a specific dataset. Then an octree can be created in about 5 to 60 minutes where the user can define if the stars should be filtered by any of the previously stored values. Only values used in the rendering will be stored in the octree. If the created octree can fit in the computer’s working memory then the entire octree will be loaded asynchronously on start-up otherwise only a binary file with the structure of the octree will be read during start-up while the actual star data will be streamed from disk during runtime.

    When the data have been loaded it is streamed to the GPU. Only stars that are visible are uploaded and the application also keeps track of which nodes that already have been uploaded to eliminate redundant updates. The inner nodes of the octree store the brightest stars in all its descendants as a level-of-detail cache that can be used when the nodes are small enough in screen space.

    The previous star rendering in OpenSpace has been improved by dividing the rendering phase into two passes. The first pass renders into a framebuffer object while the second pass then performs a tonemapping of the values. The rendering can be done either with billboard instancing or point splatting. The latter is generally the faster alternative. The user can also switch between using VBOs or SSBOs when updating the buffers. The latter is faster but requires OpenGL 4.3, which Apple products do not currently support.

    The rendering runs with interactive framerates for both flat and curved screen, such as domes/planetariums. The user can also switch dataset during render as well as render technique, buffer objects, color settings and many other properties. It is also possible to turn time on and see the stars move with their calculated space velocity, or transverse velocity if the star lacks radial velocity measurements. The calculations omits the gravitational rotation. The purpose of the thesis has been fulfilled as it is possible to fly through the entire DR2 dataset on a moderate desktop computer and filter the data in real-time. However, the main contribution of the project may be that the ground work has been laid in OpenSpace for astronomers to actually use it as a tool when visualizing their own datasets and also for continuing to explore the coming Gaia releases.

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    Interactive out-of-core rendering and filtering of one billion stars measured by the ESA Gaia mission
  • 14.
    Alvberg, Amanda
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, Faculty of Science & Engineering.
    En bild säger mer än tusen ord: En kvalitativ studie om vad som väcker konsumenters intresse på Instagram2022Independent thesis Basic level (degree of Bachelor), 10,5 credits / 16 HE creditsStudent thesis
    Abstract [en]

    Social media is a growing phenomenon that is becoming more prevalent around the world. One of the most widely used platforms is Instagram, where people can share their everyday lives through photos, and where companies can spread their brand through visual communication. Today, it is more challenging than ever for companies to stand out with their message in a market that is becoming increasingly saturated, and it is important for companies to differentiate themselves from competitors. One of the many industries that is affected by this is the interior design industry, where the visual elements are an important piece of the puzzle to successfully inspire and attract new and existing consumers in a digital market. This study therefore investigates which visual elements in interior design images from interior design companies on the platform Instagram, targeting a customer group from Scandinavia and the Nordics, that consumers experience as most appealing. The study also investigates in where they create the most interest among consumers and how these visual elements can be used in practice. The aim of the study is to investigate which visual elements in interior design images published by the interior design companies Ellos, Rum21, Hemtex and Royal Design, that is the most appealing to the selected target group of women aged 19-30 years, what the visual language of these companies looks like and whether the companies' intentions match what the selected target group finds appealing. To answer this question, theories of semiotics, visual rhetoric, digital marketing, visual communication, and identity are used.The study has a qualitative approach and has been carried out trough analysis of four different interior images, where one post per company has been selected. The study has also been conducted with five semi-structured interviews with the target group of women aged 19-30 years. An initial survey was carried out and formed the basis for the rest of the work. Analysis of the selected visual material together with the thematic analysis of the semi-structured interviews shows that the main visual elements of interior design images that appeal to and arouse the most interest in the selected target group, are the color scale, the light in the image, the photographic angle, and the choice of materials. These visual elements greatly influence the associations and experiences for the consumers, which in turn contribute to the emotion conveyed by the image. These should be used and implemented in the right way to appeal, where the study shows that the visual language of companies is to some extent consistent with what appeals to the target audience in a visual communication. The missing aspect lies in the fact that interior design companies do not always have enough insight into what consumers will associate and feel about the chosen visual elements, as well as the chosen context. As a result, consumers' experience of the image does not reflect the feeling that the companies intend to convey. This further leads to the visual elements confusing the message rather than reinforcing it. By using the above-mentioned visual elements in the right way, in combination with each other, interior design companies can stand out from the crowd where they manage to appeal to and inspire the consumer through their interior design images.

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  • 15.
    Alverby, Emilia
    et al.
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, Faculty of Science & Engineering.
    Linder, Elin
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, Faculty of Science & Engineering.
    Barns exponering i betalda samarbeten på Instagram: En kvalitativ studie om hur influencers exponerar sina barn i betalda samarbeten och hur instagramanvändare upplever dessa bilder2022Independent thesis Basic level (degree of Bachelor), 10,5 credits / 16 HE creditsStudent thesis
    Abstract [en]

    Influencers are a large part of the social media world, which has given motive to influencer marketing where influencers market products through paid collaborations with companies. In some of these paid collaborations children are shown, because Swedish influencers include their children in the content they publish on social media. The purpose of the study is to examine, from a visual point of view, how Swedish influencers portray their children in paid collaborations, as well as how female Instagram users in the age group 18-30 years experience images in which children participate.With a qualitative approach, the study was conducted with the help of six semi-structured interviews and an image analysis supported by theories. A pilot study in the form of a questionnaire survey has served as a basis for the study's delimitations and recruitment of respondents. Moreover, it has also worked as support for the interview guide. The result of the analysis shows that children are portrayed in relation to their parent, where the child interacts with the marketed product while sitting down. Children's facial expressions vary from happy to confused, also both ethos and pathos are consistently rhetorical tools used in the portraying of children in paid collaborations. Female instagram users, between the ages of 18-30 years old, have mixed experience of images where children are exposed in paid collaborations. The experience is mainly affected by how the children are portrayed in the picture, but the experience can also vary depending on the composition of the image. Important components for how the target group experiences these types of images are the following; the environment in which the child is shown, the child's facial expression and character, if there is an activity in the image, who the influencer is and which product is marketed, as well as ethical aspects. Images with more natural elements in form of environment, character, and positive emotions through facial expressions are experienced as more genuine, natural and wonderful.

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  • 16.
    Ambrosini, Lorenzo
    et al.
    Linköping University.
    Meyer, Miriah
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, Faculty of Science & Engineering.
    Data Bricks Space Mission: Teaching Kids about Data with Physicalization2022In: 2022 IEEE Workshop on Visualization for Social Good (VIS4Good), 2022Conference paper (Refereed)
    Abstract [en]

    The Data Bricks Space Mission is a prototype activity based on data physicalization for teaching kids about data. The design of the activity is based on a literature review and interviews with elementary school teachers, and targets kids aged 10-12. Using Lego bricks and a fictional space adventure story, teachers can use the Data Bricks Space Mission activity to empower kids to produce data, communicate their findings, and gain a better understanding of the relationship between data and the world around them.

  • 17.
    Anderson, Camilla
    et al.
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, The Institute of Technology.
    Andersson, Frida
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, The Institute of Technology.
    Subscribers loyalty for newspapers - a study of Östgöta Correspondentens weekend supplement2015Independent thesis Basic level (degree of Bachelor), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Upplagesiffrorna för den tryckta dagstidningen har minskat under flera år. I Sverige är det ett stort problem då prenumerationen av den tryckta dagstidningen fortfarande är tidningsföretagens största inkomstkälla. Detta gör att det är av stor vikt för tidningsföretagen att hitta ett sätt att behålla dessa kunder. I denna studie har det undersökts om utformningen av en bilaga kan bidra till att prenumeranterna blir mer lojala. Studien har utförts i sammanbete med Östgöta Correspondenten och dess helgbilaga Paus Weekend. För att svara på syftet delades studien upp i två delproblem: vad har Östgöta Correspondentens nuvarande prenumeranter för attityder till Paus Weekend och huvudtidningen samt om det finns andra liknande bliagor som uppnått ökad kundlojalitet.

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  • 18.
    Andersson, Adrian
    et al.
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, Faculty of Science & Engineering.
    Paulsson, Joel
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, Faculty of Science & Engineering.
    Interactive Visualization of Air Traffic in OpenSpace2021Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    This thesis report presents a master’s thesis project in Media Technology by two students from Linköping University, Sweden. The project was implemented in collaboration with the Visualization Center C and Linköping University during the spring of 2021 resulting in the creation and development of two spatiotemporal visualizations featuring air traffic data in the OPENSPACE software. One visualization uses live, real-time, data provided by The OpenSky Network through a Representational State Transfer Application Program-ming Interface (REST API). The other visualization uses a static historical data set covering aviation data during the COVID-19 pandemic that is mined from The OpenSky Network. A major challenge during the implementation was handling the large amount of data in a performant manner to avoid a reduced frame rate in the application. To solve this a mul-tithreaded method is used in order to not interrupt the rendering while new data are be-ing fetched to memory. OPENSPACE uses the Application Programming Interface (API) OpenGL to render graphics, thus also enabling a shader pipeline to be utilized. Multiple shaders are used to create the visualizations. The shaders’ purpose and implementation are explained in detail for both visualizations.

    The live data visualization features aircraft displayed by an anti-aliased trail of past po-sitions while the historical data visualization animates pathlines that represents aircraft with respect to time. The historical data visualization uses multiple Vertex Buffer Objects (VBOs) to render data efficiently and without interruption to allow the animation to play both forward and in reverse. The animation follows the time, time direction, and the speed of which the time plays set by the user in OPENSPACE to play seamlessly. The color of the pathlines are determined by continent to create a clustering effect without any pre-processing or calculations on the Central Processing Unit (CPU). Furthermore, the data can be filtered rapidly and in real-time by using Graphical User Interface (GUI) elements to control the filtering and by performing the actual filtering on the Graphics Processing Unit (GPU). The two visualizations enables user settings via their respective GUI. These settings include changing the color, opacity, and line width to aid in exploration of the data.

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  • 19.
    Andersson, Annika
    et al.
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, The Institute of Technology.
    Björndahl, Caroline
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, The Institute of Technology.
    Säsongssmart - Att kommunicera mat i säsong2017Independent thesis Basic level (degree of Bachelor), 10,5 credits / 16 HE creditsStudent thesis
    Abstract [sv]

    Forskare har länge pekat på hur vår livsstil inte är hållbar ur ett miljömässigt perspektiv vilket har bidragit till en ökad efterfrågan av ekologiska alternativ och livsmedel som följer den naturliga säsongen i Sverige. Många konsumenter har dock svårt att veta när olika råvaror är i säsong för tillfället. Studien ämnar därför att undersöka hur och var kommunikation kan utformas och kommuniceras för att förmedla fördelarna med att konsumera mat efter säsong samt vilken mat som är i säsong för tillfället i Sverige.

    För att besvara syftet med studien har forskning genom design använts, vilket resulterade i de två koncepten Reko och Grönt tar ordet. Båda koncepten kommunicerar fördelarna med att konsumera mat efter säsong och när dess naturliga säsong infaller. Koncepten konstaterades i värderingen framgångsrika och skapade önskade associationer hos målgruppen. Konceptet Grönt tar ordet upplevdes humoristisk och konceptet Reko upplevdes enkelt, vilket ansågs som framgångsrika och lyckade sätt att tilltala målgruppen.

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    Clever consuming - How to communicate seasonal food
  • 20.
    Andersson, Fanny
    et al.
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, Faculty of Science & Engineering.
    Furugård, Anna
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, Faculty of Science & Engineering.
    Detektion och klassificering av äppelmognad i hyperspektrala bilder2021Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Detta arbete presenterar en icke-destruktiv metod för att detektera och klassificera mognadsgraden hos äpplen med användning av hyperspektrala bilder. Fastställning av mognadsgraden hos äpplen är intressant för bland annat äppelodlare och musterier vid lagring och beredning. Äpplens mognadsgrad är även intressant inom växtförädling. För att fastställa mognadsgraden idag krävs att det skärs i frukten, en så kallad destruktiv metod. Hyperspektrala bilder kan idag användas inom områden som jordbruk, miljöövervakning och militär spaning.

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  • 21.
    Andersson, Frida
    et al.
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, Faculty of Science & Engineering.
    Östfelt, Julia
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, Faculty of Science & Engineering.
    Beyond ideals of beauty2023Independent thesis Basic level (degree of Bachelor), 10,5 credits / 16 HE creditsStudent thesis
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  • 22.
    Andersson, Kaisa
    et al.
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, The Institute of Technology.
    Björk, Carolina
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, The Institute of Technology.
    Specific conditions for marketing of non-profit organizations conducting fundraising2013Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Många ideella organisationer behöver bidrag och stöd för att kunna bedriva sitt arbete. Därmed blir det viktigt att vara synliga och sticka ut från mängden för att få människors stöd. Syftet med denna studie är att undersöka specifika förutsättningar för marknadsföring av ideella organisationer som bedriver insamling i Sverige. Genom kvalitativa intervjuer undersöktes hur väl Barncancerfondens och Kvinna till Kvinnas uppfattningar överensstämmer med teorier som finns inom området. Slutsatser som överensstämde med litteraturen var att ideella organisationer ofta har som mål att nå en mycket bred publik eller till och med hela allmänheten. Men studien visar även att Barncancerfonden och Kvinna till Kvinna arbetar strategiskt med målgrupper för att rikta insamling och informationsarbete, trots att det finns en vilja att nå ut brett. Inom ideella organisationer är det även svårt att modifiera budskapet, eftersom det måste spegla verksamheten. Hur organisationen påverkas av detta beror delvis på vilken typ av ämne som organisationen berör eftersom det med ett intresseväckande ämne är lättare att nå ut. En annan specifik förutsättning är att gåvor ofta är en osynlig handling som gynnar någon annan. Avsaknaden av produkt nämns av organisationerna som något marknadsföringen måste bemöta, vilket kan ske på olika sätt. Ideella verksamheter normalt uppfattas ha ett gott syfte vilket gör allmänheten mer mottaglig för budskapen.

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  • 23.
    Andersson, Nils
    et al.
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, The Institute of Technology.
    Marklund, Martin
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, The Institute of Technology.
    Adaptive Feature based Level of Detail for Memory Restrained Interactive Direct Volume Rendering2020Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    The purpose of this thesis was to find and implement an adaptive method, based on given data and hardware, for selecting different level-of-detail whilst preserving visual quality to the best extent possible. Another important aspect of the new method was that it had to be performance effective, since the target platform was an interactive direct volume rendering application. The project was targeted towards memory restricted systems in which it has previously been impossible to render large-scale volumetric datasets.

    The previous state of the target platform supports two detail levels: full and half, and does not implement any kind of prioritisation when selecting the level-of-detail of bricks. Apart from failing to render parts of the datasets, the old implementation is also lacking in that the top of the dataset always has the lowest prioritisation, which can prove problematic for certain datasets.

    An adaptive method which determines a suitable number of detail levels at run-time has been implemented. The new implementation has also reworked the way bricks are prioritised during rendering. The proposed algorithm prioritises bricks holding surface information as well as bricks that match the transfer-function configuration well.

    The results show that the proposed method is able to render large-scale datasets in limited environments whilst maintaining interactive frame-rates. The new brick selection algorithm is a step in the right direction towards solving the issue with parts of the dataset not being prioritised.

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  • 24.
    Andersson, Stina
    et al.
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, The Institute of Technology.
    Hultstrand Klint, Andrea
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, The Institute of Technology.
    A smart poster? Visual design of marketing material for an exhibition of the concept Smart City2015Independent thesis Basic level (degree of Bachelor), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Företaget HiQ i Norrköping vill skapa en bättre värld genom att förenkla och förbättra människors liv med hjälp av teknik. Konceptet Smart City handlar om utmaningar inom områden som energi, miljö och trafik som Norrköping kommun kommer att ställas inför i framtiden. HiQ anordnar i maj 2015 ett hackathon där studenter under några timmar ska komma fram till olika Smart City-lösningar. Dessa idéer kommer sedan presenteras i en utställning på Visualiseringscenter i Norrköping. För att dra besökare till utställningen krävs det att utställningen marknadsförs mot en intresserad och relevant målgrupp. Marknadsföringen till utställningen ska verka för att övertyga målgruppen att gå på utställningen. En affisch togs därför fram efter teorier och utvärderades sedan under sex kvalitativa intervjuer. Därefter transkriberades de insamlade data och analyserades med hjälp av meningskoncentrering.Studien syftar till att undersöka hur en affisch bör utformas visuellt för att locka målgruppen, Medieteknikstudenter vid Linköpings universitet, till utställningen. För att locka målgruppen till utställningen bör affischen innehålla fler visuella element i form av bilder, det vill säga illustrationer eller fotografier som är kopplade till konceptet och utställningen. Den textbaserade informationen bör tydligare förklara vad det är utställningen handlar om. Affischen bör utformas mer utmärkande om den ska bli ihågkommen. För att affischen som utformades i denna studie ska generera det förväntade intrycket krävs en del justeringar.

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  • 25.
    Andersson, Victor
    et al.
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, The Institute of Technology.
    Björs, Matilda
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, The Institute of Technology.
    Internal communication of a brand - A comparative study within the municipality of Norrköping2014Independent thesis Basic level (degree of Bachelor), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    The municipality of Norrköping is a large organization with lots of different areas of expertise. To make sure that the values are the same throughout the organization is a heavy task but important if you want the brand to be communicated in the right way in all instances of the organization. An internal review of the employees opinions takes place every other year with the last one taking place in 2013. The results from the review made the municipality of Norrköping realise that they needed to increase their internal work with brand knowledge. The municipality of Norrköping took action and created a platform of communications called Let´s Create Norrköping. The problem they stand before now is that they're not sure if the employees have interpreted the information the correct way regarding the brand. This case study aims to investigate how the brand Norrköping is communicated throughout the plattform Let´s Create Norrköping and how the employees perceives the brand of the municipality of Norrköping.

    To answer the cause of the report a data collection has been made with interviews divided into two parts. The first part consists of an interview with Tina Vennerholm, brand developer at the communications department of the municipality of Norrköping. The main objective of this interviews was to conclude the main objectives of the platform Let´s Create Norrköping. The second part was conducted with five employees within the organization of the municipality of Norrköping. It was conducted to conclude their point of view of the platform Let´s Create Norrköping. Conclusions that can be drawn from the study include that the employees lack the presence of the representatives of the municipality of Norrköping at their working places. The employees have a positive opinion regarding the platform Let´s Create Norrköping although they have not received any internal information regarding the plattform. The reason to their positive opinions ought to be that they have been affected by external marketing regarding the plattform. This leads to the employees having a hard time with implementing the message of the platform in their work.

    Recommendations given to the municipality of Norrköping is to be visible at the various working places, to show the worker which people who are responsible for the communication at their workplace. to give the employees a personal connection to the source of the information that is given which makes it easier for the worker to accept and implement the information.

    The employees all have positive connections to the city of Norrköping. That is why the conductors of this study recommend that the municipality of Norrköping should make a connection to the city with the work that is made by the employees on all the different areas in the organization. This is to engage and motivate the employees and make them see and understand the connection between the city and the organization and the part that they play in it.

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  • 26.
    Antonsson, Andreas
    et al.
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, The Institute of Technology.
    Kassander, Olivia
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, The Institute of Technology.
    Compelling interaction for large digital image archives2016Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Samhället idag sitter på ett stort kulturarv av bilder som nu digitaliserats i stora digitala bildarkiv. För att allmänheten ska få möjlighet att ta del av detta så har denna studie undersökt hur man kan skapa en interaktiv tjänst som ger åtkomst till ett stort antal bilder med en intresseväckande visuell upplevelse. För att besvara detta har en kvalitativ studie genomförts med en blandning av forskning genom design och fallstudie. Studiens har bestått av intervjuer med en intendent på Norrköpings stadsmuseum och fokusgrupper som besvarar målgruppens efterfrågan. Utifrån detta skapades designförslag som testades med hjälp av användbarhetstester och som därefter utvärderades genom en induktiv kvalitativ analys. Studiens resultat visar att skapandet av en interaktiv tjänst som ger åtkomst till ett stort antal bilder med en intresseväckande visuell upplevelse bör utgå från en tydlig och engagerande interaktion. Med bilder som får ta stor plats och med element som kan öka intresset i form av karta som visualliserar bildens position och tidslinje som ger möjlighet till filtrering.

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  • 27.
    Appelgren, Caroline
    et al.
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, The Institute of Technology.
    Olsson, Lisa
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, The Institute of Technology.
    Ett branschperspektiv: normbrytning och stereotyper i reklam2014Independent thesis Basic level (degree of Bachelor), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    På grund av stor konkurrens är det svårt att skapa reklam som fångar uppmärksamhet. Det finns olika verktyg för nå igenom mediaflödet. I den här studien undersöks orsaker och konsekvenser till användning av normbrytande- och stereotypisk kommunikation. Konsekvenser har tidigare studerats ur ett beteendevetarperspektiv. Studierna visar att reklam påverkar samhällets normer. Marknadskommunikativa orsaker tas inte upp och därför behövs en analys som lyfter fram för- och nackdelar ur reklambranschens perspektiv. Det förklarar varför stereotyper används och ger branschens intryck av konsekvenserna i att bryta eller förstärka normer. Den här studien har gjorts för att öka medvetenheten hos yrkesverksamma kommunikatörer. Datainsamling har gjorts genom kvalitativa intervjuer med sju yrkesverksamma kommunikatörer. Två reklamfilmer användes som diskussionsunderlag vid intervjuerna. Intervjuerna övergick sedan i mer allmänna frågor kring stereotyper, normer och normbrytande, informanterna fick reflektera över upplevda orsaker och konsekvenser. Slutsatser som kunnat dras från studien är att både normbrytning och stereotyper kan vara ett sätt att synas i dagens mediaflöde. Reklam är väldigt kundstyrt eftersom det är beställaren som tar störst risker med sitt varumärke och sin investering. Kommunikatörerna anser att deras största ansvar är gentemot beställaren. Stereotyper anses vara den säkra vägen. De identifieras snabbt och mycket slipper förklaras. I snabb kommunikation tar de inte onödig uppmärksamhet från budskapet. En nackdel med stereotyper är att de är opersonliga. De sticker inte ut ur mängden och reklamen glöms snabbt bort. En ytterligare nackdel med stereotyper anses vara att de påverkar samhället genom att förstärka fördomar och könsroller. Normbrytande reklam sticker ut och blir ihågkommen, vilket är en stor konkurrensfördel. Det kan också vara ett verktyg för ett långsiktigt identitetsskapande som skapar en målgruppsgemenskap och ett starkt varumärke. Normbrytning kan även påverka samhället genom att öka acceptans. En oro kring konsekvenserna av normbrytning leder till en försiktighet, både hos byråer och beställare. Risken är att få dålig publicitet och skada varumärket om det görs på del sätt. Det kan också göra kommunikationen otydlig och överskugga företagets produkt. Majoriteten av informanterna finner normbrytande reklam sällan förekommande. De upplever att de yngre generationerna har en större öppenhet och att normbrytning därför är vanligare i reklam riktad till ungdomar.

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  • 28.
    Arkstål, Axel
    et al.
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, The Institute of Technology.
    Lidström, Kristofer
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, The Institute of Technology.
    Enkel vägvisning i en komplex miljö - Att hitta rätt på Linköpings Universitetssjukhus2014Independent thesis Basic level (degree of Bachelor), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Att hitta rätt i den stora, komplexa miljön på Linköpings Universitetssjukhus är en utmaning. I nuläget finns skyltning och information i miljön men denna fungerar inte på ett tillräckligt bra sätt. Det är så pass bristande att man har guider vid entrén för att vägleda besökare rätt, något som är både opraktiskt och oekonomiskt. Syftet med denna designfallstudie var att utveckla ett wayshowingsystem för besökare på Linköpings Universitetssjukhus kring dess södra entré och i huvudbyggnaden. För att uppfylla syftet genomfördes ett antal kvalitativa intervjuer och observationer i miljön samt insamling av data från tidigare studier som gjorts i ämnet. Det slutliga resultatet är en kravlista för viktiga parametrar att ha i åtanke vid wayshowing på sjukhuset samt en skyltmanual baserad på kravlistan, med en detaljerad grund kring hur ett skyltsystem på sjukhuset ska se ut. Kravlistan ska kunna ligga till grund för all framtida skyltning på sjukhuset och samtliga krav är tänkta att alltid vara uppfyllda vid ny skyltning. Kraven innefattar framför allt att wayshowingen bör baseras på fysiska skyltar, det ska vara enkelt och tydligt att tolka samt att mängden information ska begränsas så mycket det går för att bli enklare att tyda. För att kunna implementera det nya skyltsystemet på hela sjukhuset behöver skyltmanualen kompletteras med detaljplanering för samtliga plan och byggnader, i nuläget är endast plan 9 och 10 i huvudbyggnaden färdiga för direkt implementation.

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  • 29.
    Arntén, Linnea
    et al.
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, Faculty of Science & Engineering.
    de Klerk, Paulina
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, Faculty of Science & Engineering.
    Att döma hunden efter håren: En designstudie i bokomslagets utformning och dess betydelse för högstadiekillars läslust2018Independent thesis Basic level (degree of Bachelor), 10,5 credits / 16 HE creditsStudent thesis
    Abstract [en]

    Statistik visar på att unga, framför allt killar, läser allt mindre. Detta kan antas bero på en rad olika faktorer, bland annat de senaste årens teknologiska framsteg. Denna studie ämnar undersöka hur ett omslag inom genren ungdomslitteratur kan utformas för att tilltala högstadiekillar samt hur stor betydelse omslaget har för målgruppens läslust. Utifrån insamlad data från målgruppen och yrkesverksamma inom bokbranschen samt relevanta teorier, har sex olika designförslag tagits fram. Designförslagen baserades på befintliga titlar från 2017. För att kunna uppfylla studiens syfte lät vi målgruppen och personer i närliggande grupper rent demografiskt värdera dessa, såväl som en formgivare på Bonnier Carlsen. Värderingen påvisade att målgruppen anser att det viktigaste med ett bokomslag är att det förmedlar en känsla. Avbildande illustrationer eller fotografier och tilltalande färger verkar spela en central roll för ett bokomslags attraktionskraft hos målgruppen. Typografi har visat sig vara mindre viktigt än motivet, medan helheten är det som verkar vara viktigast. Studien visar även att bokomslag har en stor betydelse för högstadiekillars läslust.

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    Att döma hunden efter håren: En designstudie i bokomslagets utformning och dess betydelse för högstadiekillars läslust
  • 30.
    Aronsson, Måns
    et al.
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, Faculty of Science & Engineering.
    Karlsson Brefält, Simon
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, Faculty of Science & Engineering.
    Advanced Fieldline Rendering for Space Weather Visualization2022Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    The Sun is vital for life on Earth, but its life-giving powers can just as well be threatening. It is constantly bombarding the solar system with dangerous radiation and plasma, which Earth’s magnetic field is protecting us from. The Sun also possesses a strong magnetic field which interacts with Earth’s magnetic field in what is called the Dungey cycle. This master’s thesis project aims to find a method to visualize the Dungey cycle using moving magnetic fieldlines. This project is a continuation of a previously developed fieldline rendering project. The prior method uses a velocity vector field to trace a pathline around Earth, saving vertices at discrete steps; magnetic fieldlines are then traced from each vertex. These magnetic fieldlines are called key frames and are not visualized. They are instead used to interpolate the position of a rendered fieldline over time. The main issue with this prior method occurs when the Sun’s magnetic field links with Earth’s magnetosphere in what is called reconnection. Then, the topology of the fieldlines changes which makes them instantaneously jump to a new position. The developed method in this thesis is built upon the prior method, where both pathlines and key frames still are used. The concept of matching fieldlines is introduced to solve the issue with jumping fieldlines. It is implemented by using seed points close to critical points. Critical points are found externally and are used to trace fieldline pathlines to points where reconnection occurs, as reconnection always happens at critical points. The pathline to a critical point is created by tracing backward through the vector field. It then continues from the critical point by tracing it forward. A pair of matching fieldlines is created for each critical point; one fieldline represents the Sun’s magnetic field and the other represents Earth’s magnetic field. The starting positions of the fieldlines are adjusted to account for time differences to traverse their respective pathlines, to ensure that they meet at the critical point at approximately the same time. The two fieldlines interact and mix with each other as reconnection occurs, resulting in a smooth interpolation through the changing topology. This solves the issue with jumping fieldlines in the prior project and allows for smooth visualization of the Dungey cycle.

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  • 31.
    Arvidsson, Filip
    et al.
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, Faculty of Science & Engineering.
    Bertilson, Jonas
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, Faculty of Science & Engineering.
    Deep Learning for the prediction of Raser-MRI profiles2023Independent thesis Advanced level (degree of Master (One Year)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    MRI is a critical diagnostic tool in medical practice, enabling non-invasive visualization of anatomy and physiological processes. Nonetheless, MRI has spatial resolution limitations, which may limit its diagnostic capabilities. Recently, a new technology employing Radio-frequency Amplification by Stimulated emission of Radiation (RASER) has emerged to improve MRI resolution. Similar to a laser, RASER-MRI signals spontaneously emerge without the need for a radiofrequency-pulse, which additionally enhances the safety ofthe process. However, RASER-MRI images frequently exhibit a significant presence of image artifacts due to the nonlinear behavior. Our work aims to determine whether the image artifacts can be eliminated using deep artificial neural networks. The proposed method involves training a deep artificial neural network on pure synthetic data. The data is generated by simulating RASER-signals from known image slices. Each image slice results in several RASER signals containing image artifacts which serve as input into our model. The model is supposed to reconstruct the image slice free of artifacts.

  • 32.
    Arvidsson, Linus
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, Faculty of Science & Engineering.
    Immersive Audio: Simulated Acoustics for Interactive Experiences2022Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    A key aspect of immersive audio is realistic acoustics. To get plausible acoustics for an environment the impulse response can be generated using acoustic simulations and should ideally be updated in real-time for interactive applications. In this thesis the listening experience of sound generated with an interactive sound propagation engine was explored and compared to spatial sound produced with a static impulse response. The aim was to evaluate the sound experience for applications outside of virtual reality, with computational cost in consideration. This was done by conducting a user study where the participants got to interact and compare the two sound methods in different environments. The study was performed using a custom developed application integrated with a pre-existing sound propagation engine. The results from the user study showed no obvious perceptive difference between the two sound rendering methods that could justify the extra computations. Overall there was even a slight preference for the stereo method that used a static impulse response. However, there were qualities to both sound rendering methods that were preferred depending on the environment. Another thing that was investigated in the work of this thesis was how the varying accuracy of localization of sound in different directions can be used in acoustic ray tracing algorithms. An alternative sampling method was developed that uses a biased distribution based on spatial resolution of human hearing instead of traditional uniform sampling. The computation time of the random sampling phase increases, but could potentially reduce the number of ray samples needed.

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  • 33.
    Attaullah, Muhammad
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, The Institute of Technology.
    An LTE implementation based on a road traffic density model2013Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    The increase in vehicular traffic has created new challenges in determining the behavior of performance of data and safety measures in traffic. Hence, traffic signals on intersection used as cost effective and time saving tools for traffic management in urban areas. But on the other hand the signalized intersections in congested urban areas are the key source of high traffic density and slow traffic. High traffic density causes the slow network traffic data rate between vehicle to vehicle and vehicle to infrastructure. To match up with the emerging technologies, LTE takes the lead with good packet delivery and versatile to changes in the network due to vehicular movements and density.

    This thesis is about analyzing of LTE implementation based on a road traffic density model. This thesis work is aimed to use probability distribution function to calculate density values and develop a real traffic scenario in LTE network using density values.

    In order to analyze the traffic behavior, Aimsun simulator software has been used to represent the real situation of traffic density on a model intersection. For a realistic traffic density model field measurement were used for collection of input data. After calibration and validation process, a close to realty results extracted and used a logistic curve of probability distribution function to find out the density situation on each part of intersection. Similar traffic scenarios were implemented on MATLAB based LTE system level simulator.

    Results were concluded with the whole traffic scenario of 90 seconds and calculating the throughput at every traffic signal time and section.

    It is quite evident from the results that LTE system adopts the change of traffic behavior with dynamic nature and allocates more bandwidth where it is more needed.

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  • 34.
    Axelsson, Emil
    et al.
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, The Institute of Technology.
    Forsyth Rosin, Tomas
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, The Institute of Technology.
    Spatial-temporal multi-modal visualization of volumetric simulation and in situ satellite data2015Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    This thesis describes the work done by two students from Link¨oping University during a five month stay at Community Coordinated Modelling Center (CCMC) at the National Aeronautics and Space Administration (NASA). The work includes the implementation of algorithms for rendering time-varying volume simulation data from space weather simulations hosted by the CCMC, as well as visualizing photo sequences taken by the Solar Dynamics Observatory (SDO) satellite orbiting Earth. Both these capabilities are added to the OpenSpace software to create a multi-modal visualization where scientists, as well as museum audiences, can observe the Sun’s activity and its effects on the heliosphere as a whole.

    Both the simulation data and the image sequence provided by the SDO are typically larger than what can be fitted into the main memory of modern computers, which requires the data to be streamed from disk. Due to limitations caused by disk and GPU bandwidth, it is not possible to stream the full resolution data sets in interactive frame rates.

    A multi-resolution bricking scheme is implemented to allow for interactive visualization of the large volumetric data sets. To decrease GPU memory usage and minimize data streaming, subvolumes are represented using different spatial and temporal resolution depending on their relative importance to the visual quality. By introducing the concept of a memory budget and a streaming budget, the algorithm allows the user to control how the limited memory and streaming resources are utilized.

    To decrease the amount of data to be streamed when visualizing image sequences from SDO, a simpler multi-resolution bricking scheme has been implemented. Spatial resolution of different subregions of the image is varied based on their visibility and projected size on the screen. Results show that the presented implementations enable interactive visualization of volumetric space weather data and satellite data. By varying the streaming budget and memory budget for a volumetric simulation, frame rate can be traded against visual quality.

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    Spatial-temporal multi-modal visualization of volumetric simulation and in situ satellite data
  • 35.
    Axelsson, Maria
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, Faculty of Science & Engineering.
    Gamla material presenterade i nya medier2018Independent thesis Basic level (degree of Bachelor), 10,5 credits / 16 HE creditsStudent thesis
    Abstract [sv]

    Sedan mitten av 90-talet när internet fick sin framfart har konsumtionssamhället exploderat. Vem som helst har tillgång till vad som helst, och genom webbshopar kan också vem som helst starta sin egen digitala butik. En person vill ge sig in på webbhandelsmarknaden genom att börja sälja inredningsprodukter som skulpturer, lampor och tavlor, egentillverkade i naturmaterial. Detta ska göras i en webbshop vid namn Timmar. Föreliggande studie undersöker hur denna webbshop kan formges på bästa sätt för att framhäva produkterna och tilltala målgruppen, som består av inredningsintresserade personer mellan 25 och 50 år. Som grund ligger tidigare forskning, en förstudie och underlag från Timmar. Med hjälp av detta har det genom brainstorming tagits fram olika designkoncept med tillhörande idéer. Dessa har sållats ner till slutligen två designkoncept med hjälp av tankekartor och en värderingsmatris. De två slutliga designkonceptens kallas modernt och naturligt och formgivningsmässigt innehåller dessa varsin logotyp, bilder, färger, teckensnitt samt återkommande element. Koncepten har analyserats utifrån en enkätundersökning och intervjuer med företagets målgrupp samt en intervju med en webbdesigner. Värderingen landade i att konceptet naturligt rekommenderas, dock med vissa modifikationer för att behålla en modern känsla.

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    Old materials presented in new medias
  • 36.
    Axelsson, Sofie
    et al.
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, The Institute of Technology.
    Hollén, Karolina
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, The Institute of Technology.
    Influencer marketing: Hur det påverkar unga kvinnor i generation Z2020Independent thesis Basic level (degree of Bachelor), 10,5 credits / 16 HE creditsStudent thesis
    Abstract [en]

    As advertising fatigue increases in the western world, influencer marketing is growing ever stronger as a marketing strategy. Influencers, who are basically ordinary people, earn great power on their social media platforms with thousands to millions of followers. They partner with companies for money and free products, and in return, they help companies by reaching huge target groups. In addition to paid partnerships, they publish beautiful images that strengthen their brand, which usually means to emphasize themselves as good looking, funny and nice people with fantastic and desirable lives.

    The fact that influencer marketing is an effective form of marketing has probably been gaining ground, but in addition to influencing consumers' purchasing behavior, they also have some influence on them on a deeper level. Given previous research examining a slightly older female target group young women in generation Z were selected as the target group for this study. The target group hass grown up with social media and is therefore interesting to investigate. Thus, the purpose of the study is to investigate how women in generation Z are influenced by influencer marketing on Instagram. To answer the purpose, two questions at issue were formulated, and the study was conducted using a qualitative method that consisted of interviews with a sample group of young women aged 15-20 and with the help of image analyzes of an influencer's Instagram feed.

    The results of the study showed that influencers affect young women in generation Z by painting up inventive problems, which they reinforce with unattainable, perfect ideal images while creating strong relationships with their followers. This means that the audience, despite being critical of influencers and aware that everything is not as perfect as it seems on Instagram, compares themselves - their looks and their lives - and thus questions their identity and consumes in hopes of strengthening it and to solve the painted problems as well as trying to achieve the ideal image. This contributes to stress and pressure, and in some cases mental illness. Belonging to a group is important for the target group when creating their identity and they feel that Instagram contributes to a fear of exclusion, while cultivating influencers and staying up to date on social media helps them feel group affiliation. However, they are generally positive to influencers in the aspect that they contribute to entertainment and inspiration. They find themselves seeing a positive trend among some influencers that everything no longer has to be perfect, which makes them feel like they are able to trust them more.

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  • 37.
    Axelsson, Viktor
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, The Institute of Technology.
    Automatisk segmentering och maskering av implantat i mammografibilder2014Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    A report on my thesis developing an algorithm to automatically classify a mammogram image as containing an implant or not and segmenting and masking any present breast implant in the image.

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  • 38.
    Bankell, Evelyn
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, Faculty of Science & Engineering.
    Development and Evaluation of an Interactive Map-Based File Transfer Monitor2021Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    This thesis aims to investigate whether a map-based visualization of real-time file transfers can provide an overview and facilitate the workflow for the employees at Filmgate, a VFX company. In particular, how the interface should be implemented to provide a quick and easy overview as well as without being perceived as distracting or cluttered. This thesis describes the work process of designing, developing, and evaluating a web application to visualize file transfers between employees and remote workers located around the world.

    To receive theoretical knowledge, a prestudy was carried out that consisted of a literature study within information visualization with a focus on spatio-temporal data, design principles for creating a user-centered interface, and different evaluation methods. The prestudy also consisted of data exploration to fully understand the provided data and creating a low-fidelity prototype.

    The map-based file transfer monitor was implemented to visualize the real-time data, where the development was carried out in React.js with OpenStreetMap together with Leaflet to obtain an interactive map. Furthermore, the complementary charts were implemented in d3.js. To evaluate the map-based visualization method, two different user tests were performed, one quantitative in the middle of the development process and one qualitative at the end. The quantitative test consisted of a form and the qualitative test was based on interviews with task-driven questions.

    The result of this thesis presents a visualization method where real-time file transfers are displayed on a world map with a user-centered interface. All decisions regarding the application are based on theories contained in scientific articles. Finally, a discussion is given on how the result relates to the theory, pros, and cons of the method as well as future work and the work in a wider context. This thesis shows that a map-based visualization of file transfers can facilitate the workflow as various problems with the transfers can be detected at an early stage through either color-coding, error messages, or by observing the bandwidth. The visualization provides a good overview of the progression by emphasizing essential details on the map and demand details on demand. To prevent the map from getting disruptive and cluttered, objects are clustered based on their geographical coordinates.

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  • 39.
    Baravdish, Gabriel
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, Faculty of Science & Engineering.
    GPU Accelerated Light Field Compression2018Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    This thesis presents a GPU accelerated method to compress light field or light field videos. The implementation is based on an earlier work of a full light field compression framework. The large amount of data storage by capturing light fields is a challenge to compress and we seek to accelerate the encoding part. We compress by projecting each data point onto a set of dictionaries and seek a sparse representation with the least error. An optimized greedy algorithm to suit computations on the GPU is presented. We benefit of the algorithm outline by encoding the data segmentally in parallel for faster computation speed while maintaining the quality. The results shows a significantly faster encoding time compared to the results in the same research field. We conclude that there are further improvements to increase the speed, and thus it is not too far from an interactive compression speed.

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    GPU Accelerated Light Field Compression
  • 40.
    Baravdish, Gabriel
    et al.
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, Faculty of Science & Engineering.
    Miandji, Ehsan
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, Faculty of Science & Engineering.
    Unger, Jonas
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, Faculty of Science & Engineering.
    GPU Accelerated Sparse Representation of Light Fields2019In: VISIGRAPP - 14th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications, Prague, Czech Republic, February 25-27, 2019., SCITEPRESS , 2019, Vol. 4, p. 177-182Conference paper (Refereed)
    Abstract [en]

    We present a method for GPU accelerated compression of light fields. The approach is by using a dictionary learning framework for compression of light field images. The large amount of data storage by capturing light fields is a challenge to compress and we seek to accelerate the encoding routine by GPGPU computations. We compress the data by projecting each data point onto a set of trained multi-dimensional dictionaries and seek the most sparse representation with the least error. This is done by a parallelization of the tensor-matrix product computed on the GPU. An optimized greedy algorithm to suit computations on the GPU is also presented. The encoding of the data is done segmentally in parallel for a faster computation speed while maintaining the quality. The results shows an order of magnitude faster encoding time compared to the results in the same research field. We conclude that there are further improvements to increase the speed, and thus it is not too far from an interacti ve compression speed.

  • 41.
    Baravdish, Gabriel
    et al.
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, Faculty of Science & Engineering.
    Unger, Jonas
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, Faculty of Science & Engineering.
    Miandji, Ehsan
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, Faculty of Science & Engineering.
    GPU Accelerated SL0 for Multidimensional Signals2021In: 50TH INTERNATIONAL CONFERENCE ON PARALLEL PROCESSING WORKSHOP PROCEEDINGS - ICPP WORKSHOPS 21, ASSOC COMPUTING MACHINERY , 2021, article id 28Conference paper (Refereed)
    Abstract [en]

    In this paper, we propose a novel GPU-based method for highly parallel compressed sensing of n-dimensional (nD) signals based on the smoothed l(0) (SL0) algorithm. We demonstrate the efficiency of our approach by showing several examples of nD tensor reconstructions. Moreover, we also consider the traditional 1D compressed sensing, and compare the results. We show that the multidimensional SL0 algorithm is computationally superior compared to the 1D variant due to the small dictionary sizes per dimension. This allows us to fully utilize the GPU and perform massive batch-wise computations, which is not possible for the 1D compressed sensing using SL0. For our evaluations, we use light field and light field video data sets. We show that we gain more than an order of magnitude speedup for both one-dimensional as well as multidimensional data points compared to a parallel CPU implementation. Finally, we present a theoretical analysis of the SL0 algorithm for nD signals, which generalizes previous work for 1D signals.

  • 42.
    Bedhammar, Jennifer
    et al.
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, The Institute of Technology.
    Johansson, Oliver
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, The Institute of Technology.
    Visualization of cyber security attacks2020Independent thesis Advanced level (degree of Master (Two Years)), 10,5 credits / 16 HE creditsStudent thesis
    Abstract [en]

    The Swedish Defence Research Agency (FOI) simulates cyber attacks for research and education purposes in their cyber range, CRATE, with a system called SVED. This thesis describes the process of creating a visualization of the log files produced by SVED, with the purpose of increasing the users’ comprehension of the log files and thereby increasing their knowledge of the simulated attacks.

    To create an effective visualization a user study was held to know the users’ needs, experiences and requirements. Several designs were created based on the results and one was selected and refined using feedback from workshops. A web-based implementation of the design was created using the D3.js library, which included a directed graph, icicle chart and network graph to visualize the data. Thereafter an evaluation was held to analyze if the implementation was more effective than the log files, by letting the participants solve tasks defined by the user study.

    The results from the evaluation indicates that the visualization has a higher success rate than the log files when solving the tasks. They also indicate that finding the solution requires less time with the visualization. However, since the evaluation tasks were based on the user study, the results only conclude that the visualization is more effective when solving similar tasks.

    For further development the visualization could be improved with features like real time rendering and linkage with FOI’s internal systems. Additionally, with more research and further testing, the visualization could be used as a tool for standardization of graphics in cyber space.

    In conclusion, a visualization of the log files has been implemented and according to the evaluation does the visualization increase the users’ comprehension of the data in SVED’s log files.

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  • 43.
    Bekiroglu, Kutman
    Linköping University, Department of Science and Technology. Linköping University, Faculty of Science & Engineering.
    Exploring the Potential of Virtual Reality to Promote Sustainable Behaviours: A Mixed-Methods Approach2023Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    This thesis aims to explore the potential of virtual reality (VR) to promote sustainable behaviours. The literature review draws from various fields that discuss the advantages and limitations of VR in design experiences (Scurati, et al., 2021)and how VR can provide an overview on training and transfer, education, and procedural, cognitive and maintenance training (Psotka, 1995) In virtual reality and education and training paper Joseph Psotka provides a brief overview of existing VR research on. Contributing to this literature in VR and education for designing behaviour change with a sustainability focus, by utilizing VR technology, this research focuses on transforming a carbon calculator into an immersive VR environment with the goal of increasing users’ awareness of carbon emissions. Hence, this research allows individuals with little to no experience to create and be part of immersive experiences that effectively convey information and increase users’ awareness of carbon emissions. Adopting semi-structured interviews and digital material exploration as its research methodology, this study involves participants from different backgrounds and levels of knowledge about carbon emissions aiming to create an immersive experience that could effectively educate and engage users in understanding and addressing sustainability issues. Through the development of a hi-fi prototype, participants who tested the VR experience expressed an increased interest in learning about carbon emissions, indicating the potential of immersive VR in raising awareness and fostering behaviour change. The study was conducted in collaboration with Nordic Waves Group, a Denmark-based organization that focuses on UN’s 17 New World Goals, demonstrates the practical application of the research in a real-world context, aligning with their commitment to the Sustainable Development Goals. The findings of this study emphasize the potential of VR in promoting sustainable behaviours and highlight the importance of incorporating immersive experiences in sustainability education and awareness campaigns. Overall, this research provides insights into the use of VR as a tool for promoting sustainability and offers practical solutions for designing behaviour change interventions with a focus on carbon emissions.

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  • 44.
    Bengtsson, Kasper
    et al.
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, Faculty of Science & Engineering.
    Forsberg, Fredrik
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, Faculty of Science & Engineering.
    Att sätta ett varumärke i rörelse genom att animera en logotyp2018Independent thesis Basic level (degree of Bachelor), 10,5 credits / 16 HE creditsStudent thesis
    Abstract [en]

    Denna studie syftar att undersöka hur en svensk inkubators statiska logotyp skulle kunna animeras utifrån dess varumärkes värdeord; inspirerande, inkluderande och utvecklande. Dessutom syftar den att identifiera hur en animation av en logotyp påverkar tolkningen av en verksamhets varumärke. Genom att använda sig av metoden forskning genom design har en animerad logotyp tagits fram åt verksamheten East Sweden Game. En förstudie utfördes för att få grepp om verksamheten och därefter följde en designprocess i fem steg. Först identifierades ytterligare information om verksamheten för att sedan skissa koncept i storyboards. Därefter animerades de mest lovande koncepten till utkast som efteråt värderades av East Sweden Game och Fishy Minds. Efter värderingen färdigställdes de två mest lovande animationerna och validerades genom en kvantitativ studie samt en kompletterande kvalitativ studie. Resultaten från studierna visade att ett av förslagen, “Kontrollen” som kan ses nedan, utmärkte sig och ansågs av respondenterna representera värdeorden och verksamheten bättre. Båda animationerna ansågs också av en majoritet tillföra något positivt för East Sweden Games varumärke.

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    Att sätta ett varumärke i rörelse genom att animera en logotyp
  • 45.
    Bengtsson, Malin
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, Faculty of Science & Engineering.
    Even sexier: How visual communication can be designed to encourage testing for STDs2023Independent thesis Basic level (degree of Bachelor), 10,5 credits / 16 HE creditsStudent thesis
    Abstract [en]

    Könssjukdomar är ett ständigt aktuellt ämne, som särskilt drabbar unga vuxna. Det faktum att könssjukdomar kan smitta och ha långsiktiga konsekvenser även när de är asymptomatiska gör det viktigt att som sexuellt aktiv testa sig – ändå är det många unga vuxna som sällan eller aldrig gör det. Det här arbetet syftar till att undersöka hur visuell kommunikation kan utformas för att uppmuntra unga vuxna att testa sig vid varje ny sexuell partner. Genom relevant teori i samband med en förstudie bestående av en enkätundersökning, semistrukturerade intervjuer och en analys av existerande visuell kommunikation kring sexuell hälsa har en möjlig lösning på problemet kunnat formulerats, i form av en grafisk kampanj bestående av tre annonser. Kampanjen visar på hur visuell kommunikation kring könssjukdomar kan se ut, och slutsatserna som dras är att visuell kommunikation kring det här ämnet med fördel kan utformas på ett ungdomligt, avstigmatiserande och fängslande sätt.

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  • 46.
    Bengtsson, Martin
    et al.
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, The Institute of Technology.
    Ågren, Emil
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, The Institute of Technology.
    Image enhancement of license plates in images using Super Resolution2015Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Bildgruppen på enheten för dokument och informationsteknik hos SKL har ett behov av att kunna förbättra bilder med extremt låg upplösning. Detta bildmaterial kan komma från diverse övervakningskameror där det intressanta objektet endast utgör en väldigt liten del, i detta fall registreringsskyltar på förbipasserande bilar. Att skapa en högupplöst bild av en registreringsskylt utav ett fåtal lågupplösta bilder är ett välkänt problem med ett flertal förslag på metoder och lösningar. I denna rapport kommer vi att undersöka vilka metoder som passar bäst vid bildförbättring av registreringsskyltar. Vi kommer även att skapa ett användargränssnitt där man kan läsa in en bild och välja mellan att automatiskt hitta registreringsskylten i bilden eller att manuellt klippa ut den. Efter att man erhållit en bild innehållandes endast registreringsskylten ska de olika implementerade bildförbättringsmetoderna kunna användas. Slutligen diskuteras vilka för- och nackdelar de respektive metoderna har. Förslag på eventuella förbättringar och hur man kan utveckla dessa metoder vidare presenteras därtill.

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  • 47.
    Berg, Matthias
    et al.
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, Faculty of Science & Engineering.
    Grangien, Jonathan
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, Faculty of Science & Engineering.
    Implementing an Interactive Simulation Data Pipeline for Space Weather Visualization2018Independent thesis Advanced level (degree of Master (One Year)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    This thesis details work carried out by two students working as contractors at the Community Coordinated Modelling Center at Goddard Space Flight Center of the National Aeronautics and Space Administration. The thesis is made possible by and aims to contribute to the OpenSpace project. The first track of the work implemented is the handling of and putting together new data for a visualization of coronal mass ejections in OpenSpace. The new data allows for observation of coronal mass ejections at their origin by the surface of the Sun, whereas previous data visualized them from 30 solar radii out from the Sun and outwards. Previously implemented visualization techniques are used together to visualize different volume data and fieldlines, which together with a synoptic magnetogram of the Sun gives a multi-layered visualization. The second track is an experimental implementation of a generalized and less user involved process for getting new data into OpenSpace, with a priority on volume data as that was a subject of experience. The results show a space weather model visualization, and how one such model can be adapted to fit within the parameters of the OpenSpace project. Additionally, the results show how a GUI connected to a series of background events can form a data pipeline to make complicated space weather models more easily available.

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    Implementing an Interactive Simulation Data Pipeline for Space Weather Visualization
  • 48.
    Bergenroth, Hannah
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, Faculty of Science & Engineering.
    Use of Thermal Imagery for Robust Moving Object Detection2021Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    This work proposes a system that utilizes both infrared and visual imagery to create a more robust object detection and classification system. The system consists of two main parts: a moving object detector and a target classifier. The first stage detects moving objects in visible and infrared spectrum using background subtraction based on Gaussian Mixture Models. Low-level fusion is performed to combine the foreground regions in the respective domain. For the second stage, a Convolutional Neural Network (CNN), pre-trained on the ImageNet dataset is used to classify the detected targets into one of the pre-defined classes; human and vehicle. The performance of the proposed object detector is evaluated using multiple video streams recorded in different areas and under various weather conditions, which form a broad basis for testing the suggested method. The accuracy of the classifier is evaluated from experimentally generated images from the moving object detection stage supplemented with publicly available CIFAR-10 and CIFAR-100 datasets. The low-level fusion method shows to be more effective than using either domain separately in terms of detection results.

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  • 49.
    Berggren, Ellinor
    et al.
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, Faculty of Science & Engineering.
    Sjöström, Maja
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, Faculty of Science & Engineering.
    Den lilla butikens användning av Instagram - att skapa tilltalande content2018Independent thesis Basic level (degree of Bachelor), 10,5 credits / 16 HE creditsStudent thesis
    Abstract [sv]

    Innehållsmarknadsföring är en metod för att nå ut med sitt varumärke och nå sina kunder med hjälp av innehåll av redaktionell ton. Tidigare studier har gjorts om hur innehållsmarknadsföring kan användas men få har fokuserat på hur små självständiga butiker kan använda sig av detta. Denna studie syftar till att undersöka hur en liten butik kan utforma content som tilltalar sin målgrupp och hur en strategi över skapandet av content i syftet att publicera på Instagram ska utformas. Studien har utgått ifrån caseföretaget No 36. No 36 är en liten självständig butik som är återförsäljare av modevarumärken. Data samlas in via en enkätundersökning och semistrukturerade intervjuer. En designprocess genomförs i syfte att skapa content för publicering på Instagram. En utvärdering av designen sker med hjälp av semistrukturerade intervjuer med representanter med No 36s målgrupp. Studien visar att content som skapas ska vara inspirerande, fotat enligt snapshot-estetik och ska innehålla korta och koncisa bildtexter. En strategi för publicering av content på Instagram ska innehålla en plan för vilket content som ska publiceras, när det ska publiceras och riktlinjer för hur en sammanhängande tonalitet ska skapas.

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    Den lilla butikens användning av Instagram - att skapa tilltalande content
  • 50.
    Berggren, Josefine
    et al.
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, Faculty of Science & Engineering.
    Hagstedt, Kristina
    Linköping University, Department of Science and Technology, Media and Information Technology. Linköping University, Faculty of Science & Engineering.
    Kroppsaktivism i sociala medier: En studie om individers förhållningssätt till ideal i instagramflöden2022Independent thesis Basic level (degree of Bachelor), 10,5 credits / 16 HE creditsStudent thesis
    Abstract [en]

    Posting on social media is a common phenomenon and is something that many young people do on a daily basis. Through this publication, individuals share their daily life as well as their work life and are actively marketing themselves and businesses. Depending on what an individual posts, there are positive or negative consequences, which can also affect how an individual is affected by exposure.This study aims to investigate how the target group's perception of body ideals are influenced by portraying bodies on social media. The materials surveyed are based on how young people comprehend ideals on social media, what they believe to be true, and their opinion on an individual, based on how an individual chose to portray themself on social media. Responsibility for posting on social media is an issue that is gaining more attention after the influx of influencer development. Being able to post freely can be considered a problem and it can affect people exposed to it.Research questions were answered by conducting semi-structured interviews and exploring image analysis, ideology, and cultural theory. This study takes a qualitative approach and was conducted in six semi-structured interviews with young women and men aged 20-34.The first feasibility study was conducted with the help of a questionnaire, which then formed the basis of the work and further influenced the purpose of the study, also helping to shape the interview material.

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