Study on Cutting Simulation Based on Vertex Duplication in Virtual Surgery
In order to simulating cutting on soft tissue in the virtual endoscopic sinus surgery,cutting simulation of soft tissue in virtual surgery was discussed. The tetrahedral mesh model,and the simplified model of the moving of scalpel were used,the cutting tree was constructed for the cutting operation,the cutting division and cutting thinning algorithms were designed which can reduce the increase number of grid cell structure by duplicating and moving vertices according to their location in the cutting. Through simulation experiments,the algorithm's time-consuming keep the linear relationship whit the length of cutting; after using this algorithm to simulate cutting in the grid structure,the Incremental in the number of cell structure was less than using traditional algorithm significantly.