3D Reconstruction of CT/MR Images Based on Improved Marching Cubes Algorithm
李显凌 LI Xian-ling · Chinese Journal of Liquid Crystals and Displays · 2011
Marching Cubes(MC) algorithm has disadvantages of bad-surface of 3D surface model and triangle redundancy.To improve this algorithm performance,smoothing for iso-surface and edge deleting algorithm to simplify the meshes are presented.The direction smooth of the three-dimensional space on the iso-surface was used to replace the smooth of three-dimensional coordinates on the iso-surface,and the smoothness of the model surface was improved.Based on the edge deletion algorithm,a mesh simplification algorithm was designed to simplify the model surface mesh.Two groups of Magnetic Resonance(MR) data(hollow throat and cardiovascular system) were used to actualize three-dimensional surface reconstruction.Running examples show that the smoothed three-dimensional display has been improved significantly,and the clarity and realism of the structural details improved obviously.After 90% mesh of the model had been reduced,the model can still maintain the original features and good visual effects,and the ability of real-time interactive rendering was enhanced greatly,the interaction time was reduced evidently.