3D Model Sculpturing Technique Based on Drawing Lines

Based on the user input drawing lines, a novel sculpturing technique for 3D models is presented which can generate some complex sculptures. The clean centerlines are firstly extracted from the drawing lines by edge shrinkage operation which will be regarded as the contour lines for 3D sculpturing. Then, the given model will be parameterized by global or local parameterization scheme. The extracted contour lines will be mapped as the discrete sculptural lines on the underlying 3D models. The distances to the discrete sculptural lines are computed for each mesh vertex, and the sculpturing vertices can be selected if their distance to the discrete sculptural lines is less than a given threshold. Finally, the shift distance of these sculpturing vertices can be calculated by a specific crease profile and the 3D sculpturing result can be achieved by moving the sculpturing vertices along their normal direction. Experiment results show that our approach can generate some complex sculpture results on different 3D models in a convenient and efficient manner.