Sökning: "multi-resolution"

Visar resultat 1 - 5 av 12 uppsatser innehållade ordet multi-resolution.

  1. 1. Multi-Resolution Inference of Bathymetry From Sidescan Sonar

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Zhengjie Ji; [2023]
    Nyckelord :;

    Sammanfattning : How to obtain complete and high-resolution bathymetry is an important research topic in the underwater domain. However, existing methods have certain shortcomings. Multibeam echosounder (MBES) can produce narrow beam range readings of the seafloor, but there is an interval between every two beams (between 10cm to 10m), and the resolution is low. LÄS MER

  3. 2. Multi-objective optimization for placing airspace surveillance observers

    Master-uppsats, Göteborgs universitet/Institutionen för data- och informationsteknik

    Författare :Amanda Anderson; [2021-08-13]
    Nyckelord :Facility location; multi-objective optimization; ant colony algorithm; genetic algorithm; pareto optimal; observer placement; 3D viewshed;

    Sammanfattning : Reconnaissance is an important aspect of military planning. Tools that help an alysts monitor and make informed choices are vital for avoiding costly situations. The use of ground-based radar sensors is a common method for monitoring for both land-based and airborne threats. LÄS MER

  4. 3. Investigation of a Collapsed Cone Superposition Algorithm for dosimetry in brachytherapy

    Master-uppsats, Stockholms universitet/Fysikum

    Författare :Freja Alpsten; [2021]
    Nyckelord :Brachytherapy; Collapsed Cone; Model-Based Dose Calculation Algorithms; Radiotherapy;

    Sammanfattning : Background & Purpose: The current standard dosimetry in brachytherapy treatment planning, the TG-43 formalism, ignore the presence of non-water media and finite patient dimensions. This can cause clinically relevant errors in dose estimates. LÄS MER

  5. 4. “Looking for the trees in the forest“ An attempt to finding the best segmentation-based methodology to discriminate deciduous trees in the Dubbarp area, Sweden

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

    Författare :Mihai Patrascu; [2021]
    Nyckelord :Physical Geography and Ecosystem analysis; segmentation analysis; tree crown recognition; eCognition; Scania; Geomatics; Earth and Environmental Sciences;

    Sammanfattning : Finding a solution to automatically identify tree crowns in has been a well discussed topic in the academic community. Different ideas have been put to practice, with researches mainly targeting coniferous forests. In a global context, papers concerning deciduous trees are rare and their results differ in relation to their respective study zone. LÄS MER

  7. 5. Investigating Sand Dune Location, Orientation and Geomorphometry Through GEOBIA-Based Mapping: A Case Study in Northern Sweden

    Master-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Melanie Stammler; [2020]
    Nyckelord :sand dunes; geomorphological mapping; object-based image analysis; landscape development; sanddyner; geomorfologisk kartläggning; geografisk objektbaserad bildanalys; landskapsutveckling;

    Sammanfattning : Climate change has repeatedly been framed as the defining issue of the Anthropocene and with the Arctic changing at unpreceded speed need is high for a profound understanding of the Northern Swedish landscape. Northern Swedish aeolian sand dunes have been impacted by climatic changes throughout time. LÄS MER