Sökning: "OpenStreetMap OSM"

Visar resultat 1 - 5 av 7 uppsatser innehållade orden OpenStreetMap OSM.

  1. 1. The road to food security : evaluating and improving open-access road data in Tanzania with satellite imagery

    Master-uppsats, Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Författare :Corey Nicholas Ragosnig; [2018]
    Nyckelord :Physical Geography and Ecosystem Analysis; Human Geography; Remote Sensing; Road Extraction; Food Security; Open-Access Data; Earth and Environmental Sciences;

    Sammanfattning : Metoderna som används för att göra den globala livsmedelsförsörjningen tryggare har bytt fokus från själva produktionen av jordbruksgrödor till att öka människors tillgänglighet till marknader. Analyser visar att det finns ett samband mellan inkomst, avlägsenhet, och hur stor andel av god jordbruksmark faktiskt används för jordbruk. LÄS MER

  2. 2. Developing Data Extraction and Dynamic Data Visualization (Styling) Modules for Web GIS Risk Assessment System (WGRAS)

    Master-uppsats, Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Författare :Daniel Assefa; [2018]
    Nyckelord :Geographical Information Systems; GIS; Disaster Risk Management; web GIS; Volunteered Geographic Information VGI ; Map Visualization and styling; Geo-spatial data extraction; OpenStreetMap OSM ; Earth and Environmental Sciences;

    Sammanfattning : Interactive web-GIS tools play an important role in determining disaster risk assessment which ultimately result in reduction of unexpected damages, cost and saves millions of lives. Disaster management practitioners largely benefited information at their disposal about location where possible incidents are eminent, anticipate the impact and project possible outcomes to help mitigate and organize proper response. LÄS MER

  3. 3. Map change detection using GPS position data

    Master-uppsats, Lunds universitet/Matematik LTH

    Författare :Lina Sjöstrand; Fanny Andersson; [2018]
    Nyckelord :autonomous driving; change detection; map inference; GPS; road network; HMM; Viterbi algorithm; OSM; map matching; crowd-sourced data; update maps; Technology and Engineering;

    Sammanfattning : Technology advancement in autonomous driving is accelerating. For the technology to be safe it is crucial for the vehicles to have an updated map, meaning all vehicles should have a correct and identical representation of the current road network. LÄS MER

  4. 4. Case Studies on Fractal and Topological Analyses of Geographic Features Regarding Scale Issues

    Magister-uppsats, Högskolan i Gävle/Samhällsbyggnad, GIS

    Författare :Zheng Ren; [2017]
    Nyckelord :scale; fractal geometry; big data; topological analyses;

    Sammanfattning : Scale is an essential notion in geography and geographic information science (GIScience). However, the complex concepts of scale and traditional Euclidean geometric thinking have created tremendous confusion and uncertainty. LÄS MER

  5. 5. Development of an automated matching algorithm to assess the quality of the OpenStreetMap road network : a case study in Göteborg, Sweden

    Master-uppsats, Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Författare :Julian Will; [2014]
    Nyckelord :OpenStreetMap; automated matching; quality assessment; volunteered geographic data; linear features; Physical Geography and Ecosystem analysis; Earth and Environmental Sciences;

    Sammanfattning : In the last decade a new and alternative source of geospatial data has become available, so called Volunteered Geographic Information (VGI). Private individuals voluntarily collect large amount of geographic data for a joint project. This data are usually free under certain licence restrictions. LÄS MER