Patent ID: 6222553
Filing Date: 2001-04-24
Classification: G06T

Abstract:
A computer-implemented method for creating one or more semi-sharp features in a graphical object represented, at least in part as a polygonal mesh, said computer-implemented method comprising:a) storing a model of the graphical object as an initial polygon mesh wherein said one or more semi-sharp features corresponds to one or more edges of sad initial polygon mesh;b) creating an intermediate mesh by subdividing one or more times said initial mesh in the region of the desired semi-sharp feature wherein the location of points on the subdivided one or more edges corresponding to the desired semi-sharp feature depend only on the locations of points on the one or more edges of said initial polygon mesh corresponding to the desired semisharp feature;c) subdividing said intermediate mesh one or more times in the region of the desired semi-sharp feature so that the location of points along the subdivided edges corresponding to the desired semi-sharp feature depend on the location of some points in the intermediate mesh not located on the edges corresponding to the desired semi-sharp feature in the intermediate mesh; andd) outputting a model of said graphical object comprising said desired semi-sharp feature.