Now showing items 1-7 of 7

    • IconTopology-preserving perceptual segmentation using the Combinatorial Pyramid  [Article]

      Antúnez Ortiz, Esther; Marfil Robles, Rebeca; Bandera Rubio, Antonio (Universidad de Sevilla, 2010)
      Scene understanding and other high-level visual tasks usually rely on segmenting the captured images for dealing with a more efficient mid-level representation. Although this segmentation stage will consider topological ...
    • IconCombining regular decimation and dual graph contraction for hierarchical image segmentation  [Article]

      Torres García, Fuensanta; Marfil Robles, Rebeca; Haxhimusa, Yll; Bandera Rubio, Antonio (Universidad de Sevilla, 2010)
      The Bounded Irregular Pyramid (BIP) is a hierarchical structure for image representation whose aim is to combine concepts from regular and irregular pyramids. The data structure is a combination of the simplest regular and ...
    • IconObtaining cell complexes associated to four dimensional digital objects  [Article]

      Pacheco Martínez, Ana María; Mari, Jean-Luc; Real Jurado, Pedro (Universidad de Sevilla, 2010)
      In this paper, we determine a cell complex representation of a 80–adjacent doxelbased 4-dimensional object. The homological information of this polyhedral cell complex can be employed to specify topological features and ...
    • IconOn the Recognition of Tori Embedded in R3  [Article]

      Arnaud, Hélène (Universidad de Sevilla, 2010)
      Many known algorithms allow us to topologically recognize surfaces in 3D images. However, none of them permits us to distinguish different types of embeddings of surfaces. In this paper, we restrict our study to the case ...
    • IconInvariant Spectral Hashing of Image Saliency Graph  [Article]

      Taquet, Maxime; Jacques, Laurent; Vleeschouwer, Christophe de (Universidad de Sevilla, 2010)
      Image hashing is the process of associating a short vector of bits to an image. The resulting summaries are useful in many applications including image indexing, image authentication and pattern recognition. These hashes ...
    • IconImproved Locally Adaptive Sampling Criterion for Topology Preserving Reconstruction of Multiple Regions  [Article]

      Tcherniavski, Leonid; Hnisch, Christian; Meine, Hans (Universidad de Sevilla, 2010)
      Volume based digitization processes often deal with non-manifold shapes. Even though many reconstruction algorithms have been proposed for non-manifold surfaces, they usually don’t preserve topological properties. Only ...
    • IconStrong separating (k, k)−surfaces on Z3  [Article]

      Ciria Cosculluela, José; Domínguez Murillo, Eladio; Francés Román, Ángel Ramón; Quintero Toscano, Antonio Rafael (Universidad de Sevilla, 2010)
      For each adjacency pair (k, k) != (6, 6), k, k ∈ {6, 18, 26}, we introduce a new family Skk of surfaces in the discrete space Z3 that strictly contains several families of surfaces previously defined, and other objects ...