Abstract: Creating 3D model based on sketch is an emerging research that changes traditional modeling pattern. Two algorithms of automatic generation of 3D model based on 2D curve sketching are introduced and discussed in detail in this paper. The first one expands the curve based barycenter, then reconstructs a mesh from curve-cluster, which, however, is limited in application to only ellipse-like topology curves. The second one finds its axis using discrete method, so more diversified models focusing on details can be generated. The comparison of realization effects of the two algorithms shows that they are effective for fast generation of 3D. Finally, several cartoon models created by the algorithms are displayed, and generation of model animation are desired for further.

Key words: computer graphics, sketch-based modeling, triangulation, cartoon model