IS = { zkontrolovano 16 Jan 2009 },
  UPDATE  = { 2008-12-23 },
  author =     {K{\'{u}}kelov{\'{a}}, Zuzana and {\v{D}}urikovi{\v{c}}, Roman },
  title =      {Set Theoretic Operations between Components Defined by Sketching Silhouette Curves},
  year =       {2008},
  month =      {5},
  pages =      {101-108},
  journal =    {Journal of Applied Mathematics, Statistics and Informatics (JAMSI)},
  publisher =  {University of Saint Cyril and Metodius, Faculty of Natural Sciences},
  address =    {Trnava, Slovak Republic},
  issn =       {1336-9180},
  volume =     {4},
  number =     {1},
  annote = { We propose the method for object modeling based on
    sketched silhouette curves. The 3D shape of the object is
    calculated from set of silhouette curves using two approaches
    studied within this paper namely the skeleton based convolution
    surfaces and variational implicit surfaces. Both methods are
    extended to handle smooth set theoretic operations between
    components defined by sketching silhouette curves on different
    projection planes. Our approach includes additional extensions to
    existing sketch-based modeling systems like automatic skeleton
    generation that can be directly used for object animation, carving
    operation, creating surfaces with handles and surface texturing.},
  keywords =   {Sketch-based modeling, Convolution surfaces, 
                Variational implicit surfaces, F-rep },