Sökning: "Distance functions"

Visar resultat 1 - 5 av 141 avhandlingar innehållade orden Distance functions.

  1. 1. Covering distance : essays on representation and political communication

    Författare :Martin Karlsson; Joachim Åström; Stig Montin; Thomas Zittel; Örebro universitet; []
    Nyckelord :SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; political representation; political communication; participatory initiatives; political blogging; Political Science; Statskunskap;

    Sammanfattning : Political representatives’ democratic legitimacy rests on their ability to cover the distance between themselves and citizens. Representatives must avoid being perceived as distant and aloof from the needs and wishes of those they represent. LÄS MER

  2. 2. Distance Functions and Image Processing on Point-Lattices : with focus on the 3D face- and body-centered cubic grids

    Författare :Robin Strand; Gunilla Borgefors; Stina Svensson; Christer Kiselman; David Coeurjolly; Uppsala universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Computerized image analysis; digital geometry; distance functions; non-standard grids; point-lattices; Image analysis; Bildanalys;

    Sammanfattning : There are many imaging techniques that generate three-dimensional volume images today. With higher precision in the image acquisition equipment, storing and processing these images require increasing amount of data processing capacity. Traditionally, three-dimensional images are represented by cubic (or cuboid) picture elements on a cubic grid. LÄS MER

  3. 3. Distance Functions and Their Use in Adaptive Mathematical Morphology

    Författare :Vladimir Ćurić; Gunilla Borgefors; Cris L. Luengo Hendriks; Hugues Talbot; Uppsala universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Image analysis; Distance functions; Mathematical morphology; Adaptive mathematical morphology; Image regularization; Computerized Image Processing; Datoriserad bildbehandling;

    Sammanfattning : One of the main problems in image analysis is a comparison of different shapes in images. It is often desirable to determine the extent to which one shape differs from another. This is usually a difficult task because shapes vary in size, length, contrast, texture, orientation, etc. Shapes can be described using sets of points, crisp of fuzzy. LÄS MER

  4. 4. The accessibility paradox : Everyday geographies of proximity, distance and mobility

    Författare :Katarina Haugen; Kerstin Westin; Einar Holm; Örjan Pettersson; David Banister; Umeå universitet; []
    Nyckelord :SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Accessibility; proximity; distance; daily mobility; everyday life; residential conditions; spatial structure;

    Sammanfattning : This thesis aims to explore the importance of proximity and mobility, respectively, for individuals’ accessibility, as well as the relationship between these two key spatial dimensions of accessibility in the context of everyday life. The thesis is based upon three empirical research papers which focus on accessibility-related preferences, actual accessibility conditions, and travel patterns. LÄS MER

  5. 5. Level-set methods and geodesic distance functions

    Författare :Ola Nilsson; Ken Museth; Hamish Alan Carr; Linköpings universitet; []

    Sammanfattning : The work in this thesis focuses on efficient implementations of level-set methods and geodesic distance functions. The level-set method is a grid based design that inherits many favorable traits from implicit geometry. LÄS MER