author = "Velho, luiz",
                title = "Semi-regular 4-8 refinement and box spline surfaces",
                 year = "2000",
               editor = "Carvalho, Paulo Cezar Pinto and Walter, Marcelo",
                pages = "131--138",
         organization = "Brazilian Symposium on Computer Graphics and Image Processing, 13. 
            publisher = "IEEE Computer Society",
              address = "Los Alamitos",
                 note = "The conference was held in Gramado, RS, Brazil, from October 17 to 
             keywords = "splines (mathematics) semi-regular 4-8 refinement box spline 
                         surfaces mesh refinement method subdivision surfaces semiregular 
                         3-direction hierarchical structure control meshes 2D manifolds 
                         arbitrary topology conforming variable-resolution mesh extraction 
                         spatially varying adaptation functions smoothing method 
                         generalized four direction box spline surfaces subdivision 
             abstract = "We introduce a new mesh refinement method for subdivision 
                         surfaces. It generates a semiregular 3-direction hierarchical 
                         structure from control meshes representing 2D manifolds of 
                         arbitrary topology. The main advantage of this structure is that 
                         it allows the extraction of conforming variable-resolution meshes 
                         based on spatially varying adaptation functions. We also present a 
                         smoothing method designed to work in conjunction with our 
                         semi-regular refinement. It produces generalized four direction 
                         box spline surfaces of class C/sup 1/. Together the refinement and 
                         smoothing operators result in a subdivision scheme that is very 
                         effective in multiresolution applications.",
  conference-location = "Gramado, RS, Brazil",
      conference-year = "October",
         organisation = "SBC - Brazilian Computer Society",
           targetfile = "131-138.pdf",
        urlaccessdate = "2020, Nov. 26"